Wright Manufacturing Lawn Mower 26077 User Manual

SPORT  
Commercial Mower Owner’s Manual  
For Sentar Sport serial #26077 and higher until superseded  
WARNING: READ THIS MANUAL BEFORE USING  
For your safety and for proper operation and maintenance read  
carefully and keep readily available for future reference.  
Revised 03/2006  
Additional replacement owner’s manuals as well as illustrated parts lists are available from your  
authorized Wright Dealer for a nominal charge. Also check www.wrightmfg.com for the most up  
to date literature. Please note the model number and serial number of your Wright product.  
For reference please note the following information at the time of purchase:  
SERIAL # _________________________  
MODEL # _________________________  
DATE OF PURCHASE ______________________  
Wright Manufacturing Inc.  
 
TABLE OF CONTENTS  
 
* * This Page Intentionally Left Blank * *  
 
Pre-Delivery Service of Mower by Dealer  
If you are not completely familiar with the Safety Instruction  
Manual read it now before proceeding with the Pre-Delivery  
Service of the mower. Only your authorized Wright dealer  
should perform the Pre-Delivery Service of the mower.  
WARNING  
The Wright Sentar Sport is shipped completely assembled and has been adjusted and tested at the  
factory. However, due to jostling during the shipping process and the delivery time lapse the following  
items need to be repeated again before starting the mower. After you have uncrated the mower, follow  
these procedures in the order indicated:  
Remove spark plug wire from spark plug(s).  
Inspect the mower for any damage, unusual conditions or missing parts.  
Inspect the mower for all of its decals, especially the warning decals. There should be one blade  
warning decal on each side of the deck, the “shield missing” under the blade belt covers, and the  
dash decal.  
Check (and fill if necessary) engine oil level according to the engine manufacturer’s recommendation.  
Check (and fill if necessary) hydraulic fluid level. The level should be about 1”-1.5” below the top of the  
oil fill. Use synthetic oil: Mobil1 15W-50.  
Check rear tire pressure - 18 to 22 psi. is recommended. It should be even on both sides. Use the  
higher pressures for heavier operators. Set the tire pressure in the front caster tires between 30  
and 40 psi. Higher pressures will help keep the caster tires on their rims when impacted from the  
side but give a stiffer ride. Some Front Casters are equipped with non-pneumatic tires and do not  
required any air.  
Check the battery to see that the cables are tight and connected properly. The battery is 12 volts and  
is a maintenance-free battery. Only charge the battery if it will not start the mower properly.  
Remove the blade belt covers and inspect the belt and idler arm for smooth operation. Also grease the  
idler arm(s) if applicable.  
Rotate the blade pulleys slightly to see if they rotate freely and all turn together. There will be  
resistance due to the clutch brake.  
Replace the blade belt covers.  
Check the Rapid-Hite deck height adjustment mechanism for proper operation.  
Lubricate all moving parts (see Maintenance Items section of this manual).  
Fill fuel tank with regular unleaded gasoline. Turn fuel valve under fuel tank to the “ON” position.  
DO NOT START THE ENGINE AT THIS TIME. FOLLOW THE NEXT PROCEDURE BEFORE  
STARTING. The hydraulic system MUST be checked for proper operation before allowing wheels  
to operate on the ground.  
Set the rear of the machine on jack stands or blocks to raise rear wheels off the ground two or three  
inches and check to be sure that the mower will not fall off the supports you devise. (Do not  
support the mower’s weight on any part of the foot platform.) You must be able to stand on the  
mower. The stand(s) must be able to secure the mower from rolling off or away during the next  
procedures. Check under the mower deck for any debris or unusual conditions.  
With hand controls in the middle or neutral position, apply the parking brake.  
Open the manual bypass valves on side of each pump a half-a-turn counterclockwise.  
Reattach spark plug wires to spark plugs.  
Before starting the engine be ready to stop it if the wheels begin to turn with the brake on. (If this  
happens, check that the manual bypass valves on side of each pump are open at least a half-a-turn  
counterclockwise.)  
Start the engine according to the engine manufacturer’s recommendation. Let the engine run at low  
RPM for several minutes to get the hydraulic fluid circulating through the pumps. While seated or  
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standing on the foot platform, release the parking brake. Now gradually close the manual bypass  
valves on top of each pump one at a time and see if the wheels start to move. If the wheels move  
when the hand controls are in neutral position, adjust the pump neutral adjustment allen screw.  
The manual bypass valves on side of each pump should now be firmly closed. (Do not tighten  
these bypass valves with a wrench. Only hand tighten). Now try moving the hand control levers,  
one at a time, forward and backward. Check to see if the wheels move forward and backward  
according to position of the levers. If not, service the hand control system. If the wheels stop when  
the hand controls are in the neutral position, the parking brake should now be applied.  
Before testing the blade clutch/brake operation, make sure the area is clear and there is nothing  
vulnerable to being thrown from under the mower. No one should be near the mower deck or in its  
line of discharge at this time or at any time. The discharge chute deflector should be in the down  
position. The parking brake should now be applied. Move the engine throttle control to ¾ speed  
setting.  
Place your feet firmly on the foot platform and turn on the blade clutch switch. Run blades for a minute  
or so. Try engaging and disengaging the blades a few times about 10 seconds apart. If the blades  
do not start and stop in a short amount of time, service the blade brake system. With the blades  
on, now try lifting your feet off the foot platform to test the Operator Presence Control switch (OPC).  
The engine should die and the blades should stop in several seconds. If not, service the OPC  
system. Try this a couple of times.  
Disengage the blades, set the parking brake, shut off the engine and remove the mower from the  
stand(s).  
Drive the mower around on a level parking lot. It is recommended that the slower setting of the  
Speed/Sensitivity Adjustment be used. (See further in this manual for information on  
Speed/Sensitivity Adjustment.) Be sure that the mower drives in a straight line when both hand  
controls are held to the full speed position which is up against the stationary control bar. If not, see  
further in this manual for information on tracking adjustment.  
As you drive the mower, listen for any unusual noises and test for irregular operation and adjust or  
service as necessary. Next, go over the safety information and operating procedures in this  
manual with the customer. Instruct the customer in proper operation and observe the customer  
during their initial operation on a level parking lot. Make sure the customer is familiar and  
comfortable with the basic operation and use of the mower.  
Dealer: Please fill out and follow the instructions on the Product Registration Form and have the  
customer fill out his part of the form. After the Product Registration Form is filled out and signed by  
the customer and a representative from your dealership, please send or fax it within 14 days to  
your Wright Manufacturing Distributor according to the directions on the Form. Then give the  
customer his copy of the registration form and then keep your copy and mail the remaining copies  
of the form to your Wright Manufacturing Distributor. The limited warranty is not valid unless the  
mower is registered and all of the above steps are taken. Remember, the purchaser is both your  
and our customer and his satisfaction is very important. Thank you for supporting our products.  
The mower is now ready for delivery to your customer  
2
 
SAFETY INSTRUCTIONS  
WRIGHT MOWER USERS & OWNERS: READ THIS MANUAL BEFORE USING  
PLEASE BE CAREFUL!  
WARNING  
CAUTION  
This symbol with the word “WARNING”  
indicates a potentially hazardous situation  
which, if not avoided, could result in death or  
serious injury.  
This symbol with the word “CAUTION”  
indicates a potentially hazardous situation  
which, if not avoided, could result in minor  
or moderate injury.  
Introduction  
This mower is built to the highest standards in the  
industry. However, carelessness or operator error  
may result in serious bodily injury or death.  
Accident and hazard prevention are dependent  
upon the awareness, concern, wisdom, and  
proper training of the personnel involved in the  
operation, transport, maintenance, and storage of  
the equipment. Make sure every operator is  
properly trained and thoroughly familiar with all of  
the information in this manual before operating  
the equipment.  
WARNING  
Owner/User Notice  
The owner’s/user’s obligation is to instruct  
themselves and all potential users in the safe  
operation of this equipment and be sure they read  
and follow the instructions in this safety manual  
and other material provided by Wright  
Manufacturing, Inc. before using or allowing  
others to operate the equipment. Do not operate  
this unit unless you carefully read, understand  
and follow the assembly, installation, and safety  
instructions contained in this manual and the  
warning decals provided on the unit. Do not allow  
other persons to use this unit unless you make  
sure they carefully read, understand and follow  
these instructions. Never allow children to  
operate or play on the unit.  
General Safety Instructions  
The Wright Sentar Sport is designed with your  
safety in mind. It has the following safety systems  
with which you should become familiar:  
The warning decals on the mower including  
the instrument panel warning  
The blade switch must be “off” before starting  
the engine  
Your feet must be on the foot platform in order  
to engage the blades  
If you remove your feet from the foot platform  
while the blades are running the engine will  
stop and the blades will brake in seconds  
Letting go of the hand controls will stop the  
wheels instantly  
WARNING  
User Qualifications  
This product is designed for use by physically fit,  
experienced, professional commercial mower  
operators who have a minimum of 160 hours of  
experience operating twelve horsepower and  
greater industrial mowers. Operators must be 18  
years or older and weigh at least 120 pounds and  
no more than 300 pounds. They must have read  
and understood this manual. DO NOT allow  
children to operate the mower. Never allow  
passengers on the mower. DO NOT allow adults  
to operate the mower without proper instruction  
mentioned above.  
Spring loaded chute deflector helps reduce  
trajectory of thrown objects  
Belt/pulley covers on cutter deck  
Anti-tip rollers provided at the rear of the  
mower reduce the risk of mower tipping  
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WARNING  
WARNING  
User Clothing  
Regular Mower Safety Maintenance  
Keep your Wright mower in good operating  
condition, and keep safety devices and shields in  
place and in working condition. Replace worn  
tire(s) with less than 3/32” of any tread groove left.  
Use tires with the tread pattern specified by  
Wright Mfg., Inc. only. DO NOT change the  
engine governor settings or over-rev the engine  
contrary to engine manufacturer specifications.  
Failure to comply can compromise operator  
safety, shorten equipment life and void your  
manufacturer’s warranty. Keep all nuts, bolts, and  
screws tight to be sure the equipment is in safe  
working condition. Check the blade mounting  
bolts for proper tightness every eight (8) hours of  
operation. Check the blades for excessive wear  
and sharpness every four to eight (4-8) hours of  
operation. Sharpen dull blades. Replace blades  
when they become excessively worn. The mower  
should not be used after the blades or other part  
of the mower strikes a foreign object, until  
conducting a thorough inspection and any  
damage is repaired. Make sure the chute  
DO NOT operate the mower while wearing  
sandals, tennis shoes, sneakers, or shorts.  
Always wear long non-baggy pants. Wear high-  
top leather steel-toed work boots with thick,  
textured tread, soft-rubber soled at all times.  
Hard or smooth soled shoes are too slippery for a  
good footing on mower platform. NEVER wear  
loose-fitting clothing or jacket pockets that can get  
caught on the handlebars or control levers of any  
mower you drive. Wearing safety glasses, ear  
protection and safety shoes is advisable and  
required by some local ordinances and insurance  
regulations.  
WARNING  
Inspect Mower Before Each Use  
DO NOT use the mower if any parts are not  
maintained in good operating condition. Examine  
the moving parts prior to each use. Look for  
excessive wear, bald or worn tires, cracks in  
parts, loose or missing bolts, cotter pins, linchpins  
or “hair” pins or cable yoke pins and replace  
before operating the mower. Make sure all safety  
equipment provided with the mower is in good  
operating order, including all the warning decals  
and the required operator-presence device which  
stops the engine and blades when the foot-  
operated Operator Presence Control (OPC)  
switch is released. (To test the OPC, follow  
instructions in the Operating Instructions section  
of this manual.) Inspect the two anti-tip rollers  
and their respective bolts at the rear of the mower  
for tightness and proper operation. Be sure that  
all parts of the hand-operated hydraulic control  
system are tight and secure. This is to reduce the  
possibility that the mower could have a loss of  
control during operation and compromise operator  
safety.  
deflector is always in place and operating  
properly. Replace if the deflector becomes worn  
or ceases to properly deflect the grass in a safe  
manner. See the instructions in the  
Recommended Maintenance section of this  
manual for other items of required maintenance.  
WARNING  
Work Area Conditions & Inspection  
Prior to operating the unit, carefully inspect all  
lawn/ground areas where you plan to use the  
mower for hidden, hard-to-see objects or uneven  
ground that may be hidden in the grass. Clear the  
work area of moveable objects such as wires,  
rocks, glass, toys, etc. that might be picked up by  
the mower and dangerously thrown. Remove, if  
possible, or mark the location of all immovable  
objects or irregular areas and be sure not to hit  
them with any part of the mower, its deck or the  
blades. Obstacles such as holes, abrupt changes  
in ground contour, tree trunks, stumps or roots,  
pipes protruding from the ground, paving edges,  
etc. in the path of operation can abruptly turn or  
4
 
 
stop the mower. This could throw you off the  
mower or into and possibly over the handle bars  
causing serious injury or death. The faster you  
are moving the more potential there is for injury.  
Mow only in daylight or in good artificial light.  
Keep away from drop-offs, the edges of ponds,  
streams, pools, etc. especially at the bottom of  
slopes. Do not mow when children or others are  
around. When the Wright mower is in use, never  
direct the grass discharge toward bystanders,  
traffic, cars or buildings nor allow anyone within  
50 feet of the machine while in operation. Thrown  
objects can pass through glass windows and  
some walls of buildings. There is extreme risk of  
danger from thrown objects or being cut by the  
blades of the mower or being run over if you lose  
control. Never operate the mower in an enclosed  
area without good, approved ventilation. Exhaust  
fumes are dangerous.  
parking brake, stop the engine and remove  
the key.  
Before performing any maintenance or repair  
service, disengage power to blades, apply  
the parking brake, stop the engine, remove  
ignition key and spark plug wire from spark  
plug(s).  
All operators of this mower should exercise  
caution when driving this mower at high  
speeds. Sudden acceleration or  
deceleration may cause serious injury.  
DO NOT allow inexperienced persons to  
operate the mower until they have read and  
understood these safety instructions.  
Operate the mower at slower speeds while  
becoming familiar with it.  
The grass discharge chute deflector must be  
installed at all times and in the down position  
except that it may be raised when cleaning  
out the deck, or a grass catcher is installed  
or a mulch kit and block-off plate is properly  
installed.  
If the mower discharges grass clogs, turn off the  
blade clutch switch, apply the parking brake,  
stop the engine and remove the key before  
removing obstruction(s).  
Keep all shields and covers in place, namely, all  
blade and belt covers, engine shields, and  
grass discharge chute deflector.  
Keep hands, feet and clothing away from  
rotating parts, especially the rear wheels,  
blades, engine flywheel, belts and pulleys.  
Do not touch engine, muffler or hydraulic  
system while engine is running or soon after  
it is stopped. These areas can be so hot as  
to cause severe burns.  
Clean grass, leaves and lubricant spills from  
surfaces after use to prevent fire hazard.  
Be alert for traffic when crossing roads or  
operating near roadways.  
WARNING  
Initial Operating Safety Guidelines  
Read and understand the warnings on the  
instrument panel of the mower.  
Keep a firm hold on the stationary handle at all  
times.  
Keep both feet on the foot platform at all times.  
Know the controls and how to stop quickly.  
Before attempting to start the engine, follow all  
starting instructions below and in the engine  
operator’s manual.  
Look behind before backing up.  
Before leaving the operator’s position, even  
momentarily, turn off the blade clutch  
engagement switch and apply the parking  
brake. Keep others from coming near the  
mower. Get back on the mower as soon as  
possible.  
When leaving the Wright mower unattended,  
turn off the blade clutch engagement switch,  
apply the parking brake, stop the engine and  
remove the key. Never leave the machine  
unattended on a slope in case someone  
disengages the parking brake. This could  
create a rollover hazard.  
When transporting, driving onto transport  
vehicles, into buildings, across parking lots  
or otherwise not mowing grass, turn off the  
blade clutch engagement switch to reduce  
risk of thrown objects and rotating blade  
hazard. After coming to a stop apply the  
Before climbing curbs, crossing gravel drives,  
sidewalks or roads, turn off the blades and  
wait for them to stop, then place deck into  
transport position.  
WARNING  
Operation In Forward Direction  
Always keep a firm grip on the mower stationary  
handlebar with both hands. Operate the mower  
slowly until you become familiar with how the  
5
 
 
mower operates. Do not operate the mower  
faster than conditions allow. For example, hills,  
wet or bumpy ground, dim light or high grass are  
all conditions requiring slower speeds. Never  
operate the mower at the highest speed unless  
you are on level, wide, open areas of clearly  
visible ground or transporting on paved areas.  
Speeding with any mower is dangerous, and so is  
traveling faster than conditions should permit on  
this mower. Sudden stops from excessive speed  
or falling off the mower may cause serious injury  
or death.  
can feel secure about the traction of the tires and  
the stability of the mower. Do not operate the  
mower on slopes at all when the grass is wet.  
There is a danger of suddenly sliding sideways or  
down the hill. When operating on a slope, travel  
across the grade whenever possible, not in an up  
or down pattern. Reduce speed and exercise  
extreme caution on slopes and in sharp turns to  
prevent tipping or loss of control. Be especially  
cautious when changing direction on slopes.  
Heavier operators may consider obtaining the  
optional weight bar, which is designed to add  
weight to the front of the machine.  
When pointing up a slope, your mower has the  
most weight on the drive wheels and therefore the  
most traction at the tires. However, this is the  
angle that it has the most tendency to tip back  
(“pop a wheelie.”) This is the preferred angle for  
mowing small areas of steeper slopes.  
WARNING  
Operation In Reverse  
Always keep a firm grip on the mower stationary  
handlebar with both hands. Keep both feet firmly  
on the foot platform. Look behind you before  
backing to prevent injuring yourself or anyone  
behind you. Operate the mower very slowly,  
inching it backward until you become familiar with  
how the mower operates. Always operate slowly  
if in an awkward location or position. While  
backing up never place your foot or feet on the  
ground near the back edge of the mower to  
prevent serious personal injury if the mower were  
to run over you.  
Recommendations for this angle:  
Lean as far forward as possible and stand if  
necessary to add your weight to the front of  
the mower.  
Accelerate gently. Do not accelerate quickly to  
avoid “popping a wheelie”.  
If backing down the hill, do not stop suddenly  
but slow down gradually.  
When pointing down a slope, your mower has  
the least weight on the rear drive wheels and  
therefore the least traction at the tires. This is the  
angle that the mower has the most tendency to  
slide. However, this is the angle that it has the  
least tendency to tip back. Avoid this angle, as it  
has the least advantage for your mower.  
WARNING  
Zero-Radius Turn Operation  
During zero-radius turns (when one mower wheel  
rotates backwards while the other rotates forward)  
drive extra slowly to reduce the possibility of  
losing traction, or control, or becoming dizzy. This  
will help prevent you from being thrown off the  
mower. Be aware that if you do a turn on a slope  
you may go through all of the orientations to a  
slope mentioned below and must handle the  
mower accordingly.  
Recommendations for this angle:  
Stretch your arms out straight while holding onto  
the stationary handlebar and sit back as far  
as you can on the seat. This adds more of  
your body weight to the drive wheels for  
more traction.  
Do not change speed suddenly to minimize the  
tendency of going into a slide. Accelerate  
and decelerate gently. If you ever go into an  
uncontrolled slide while pointing down a  
slope the recommended procedure is to let  
go of the handles and jump off if necessary.  
Otherwise, control the mower gently and  
stay off slopes that tend to make the wheels  
slide.  
WARNING  
Operation on Slopes  
DO NOT operate on steep slopes. Do not  
operate the mower on slopes steeper than you  
6
 
 
When crossing a slope sideways, your mower  
has the average amount of weight on the drive  
wheels versus the front wheels, similar to level  
ground. However, this angle leaves the least  
weight on the higher side drive wheel, tending to  
make it slip. This is the preferred angle for  
mowing large areas of gentle slopes.  
NEVER store the equipment with gasoline in the  
tank inside a building where fumes may reach an  
open flame or spark. Allow the engine to cool  
before storing in any enclosure.  
WARNING  
Recommendations for this angle:  
Sit back, as far as you can on the seat. This  
adds weight to the rear drive wheels and will  
allow you to mow more quickly across the  
slope without sliding. If your mower is  
Hydraulic Safety  
Keep body and hands away from pin holes or  
fittings that eject hydraulic fluid under high  
pressure. Use paper or cardboard and not hands  
to search for leaks. Hydraulic fluid escaping  
under high pressure may have sufficient force to  
penetrate skin and cause serious injury. If foreign  
fluid is injected into the skin, it must be surgically  
removed within a few hours by a doctor familiar  
with this form of injury or gangrene may result.  
Seek medical attention immediately. Make sure  
all hydraulic fluid connections are tight and all  
hydraulic hoses and lines are in good condition  
before starting your Wright mower. Hydraulic fluid  
is under high pressure. If you need service on  
your hydraulic system, please see your authorized  
Wright dealer.  
equipped with the optional weight bar on the  
front, the mower may not handle as well  
crossing slopes as without the weight bar on  
the front. Weight on the front of the mower  
reduces the traction of the rear drive wheels  
and can cause the mower to slide or nose  
dive down hill. Use of the optional weight  
bar is determined by the width of cut of the  
mower and the operator’s weight. For 36”  
cut mowers, operators over 175 pounds may  
prefer the optional weight kit. For 52” cut  
mowers, operators over 225 may prefer the  
optional weight kit. Remember it is  
recommended that operators weigh at least  
120 pounds and not more than 300 pounds.  
These are general guidelines only. The  
mower function and comfort will vary  
WARNING  
depending on mowing environment,  
operator driving style and preference.  
To reduce the chances of “popping-a-wheelie”,  
do not accelerate quickly.  
Note: Excessively worn tire tread is dangerous.  
Replace tire(s) with less than 3/32” of any tread  
groove left. Use tires with the tread pattern  
recommended by Wright Mfg., Inc. only. Keep the  
tire pressure in the drive tires between 18 and 22  
psi. Higher pressures will cause the tires to have  
less traction which may prevent safe operation.  
Replacement Parts  
Use of parts other than specified parts supplied by  
Wright Manufacturing, Inc. may compromise the  
safe use of the mower, are not recommended and  
their use could void the warranty. Always check  
with your Dealer or the Wright Mfg website for the  
latest Illustrated Parts List for your equipment.  
Wright is fully concerned with your safety.  
Please read the above again and again until  
you fully understand the methods to promote  
the safest operation possible.  
REMEMBER – YOUR MOWER CAN BE ONLY  
AS SAFE AS THE OPERATOR.  
FAILURE TO FOLLOW SAFE OPERATING  
PRACTICES MAY RESULT IN  
WARNING  
Fuel Safety  
Handle gasoline with care – it is highly flammable.  
Do not smoke while handling gasoline. Use an  
approved gasoline container. Never remove the  
fuel cap or add gasoline to a running or hot  
engine or an engine that has not been allowed to  
cool for several minutes after running. Never fill  
the tank indoors and always clean up spilled gas.  
SERIOUS INJURY OR DEATH.  
7
 
 
OPERATING INSTRUCTIONS  
If you are not completely familiar with the Safety Instruction  
Manual read it now before proceeding with the operation of  
the mower. REMEMBER THERE ARE CERTAIN  
PRECAUTIONS LISTED IN THIS MANUAL THAT YOU MUST  
NOW TAKE BEFORE STARTING THE MOWER.  
WARNING  
• Turn OFF the blade engaging switch if it is  
on.  
• Turn fuel valve to the “ON” position.  
Inspect Mower Before Each Use  
Inspection of Mower: Do not use the  
mower if any parts are not maintained in good  
operating condition. Examine all moving parts  
prior to each use. Look for excessive wear, bald  
drive tires or worn out front tires (normally  
smooth), cracks in parts, loose or missing bolts,  
cotter, linchpin or “hair” pins or cable yoke pins  
and replace before operating the mower. Make  
sure all safety equipment provided with the  
mower is in good operating order, including all  
warning decals and the operator-presence  
device which stops the engine and blades when  
the foot-operated Operator Presence Control  
(OPC) switch is released. To test the OPC,  
follow the instructions given later in this manual.  
Inspect the two anti-tip rollers and their  
Starting the engine  
Electric Start:  
•Start the engine according to the engine  
manufacturer’s recommendation, see engine  
manual. Set the throttle control lever near  
mid throttle, pull out on the choke control  
knob and turn the key to the start position.  
Do not engage the starter for more than ten  
(10) seconds at a time. This may overheat  
the starter and the wiring systems. Wait ten  
(10) seconds between attempts. If the  
engine does not start after several attempts  
or stalls frequently, take the mower in for  
service.  
After starting the engine according to the engine  
manufacturer’s recommendation, push in on the  
choke control knob to open the choke valve, let  
the engine run for several minutes to get the  
hydraulic fluid circulating through the pumps,  
etc. and to allow the engine to warm up. Do not  
over-rev a cold engine.  
respective bolts at the rear of the mower for  
tightness and proper operation. Ensure that all  
parts of the Quad-Lever™ control system are  
tight and secure. This is to reduce the possibility  
that the mower could have a loss of control or  
safety.  
Basic Operation: The following procedures  
are to guide you through the basic operation of  
the mower. You should be a qualified mower  
operator according to the safety section of this  
manual. If this is your first time, operation  
should only be done with the assistance of your  
dealer on a level area. You should go through  
each step, in the order indicated, every time you  
start the mower.  
Unusual noises or irregular operation:  
As you drive the mower, listen for any unusual  
noises and test for irregular operation and adjust  
or service as necessary.  
How to drive the mower  
While sitting or standing, both feet should be  
firmly placed on the foot platform. Set the  
engine speed about a fourth of the way from  
idle. Release the parking brake. Now try  
moving the hand control levers, one at a time,  
very slightly, forward and backward. Check to  
see if the wheels move forward and backward  
according to the position of the levers. If not,  
check to see that the pump release valves are  
closed. With both feet still firmly placed on the  
foot platform, increase the engine speed to  
How to start the mower  
Before starting the engine  
• Make sure the control levers are in the  
exact neutral position  
• Apply the parking brake if it is not already  
set.  
8
 
 
about half of the way from idle speed. Release  
the parking brake. The higher engine speed will  
make the controls much more responsive and  
the mower much quicker; Use caution if it is your  
first time. Now try moving the hand control  
levers, one at a time, very slightly, forward and  
backward. Gradually increase your speed until  
you are well acquainted with the operation of the  
hand controls and the mower’s behavior. After  
gaining a good feel for how the mower handles,  
gradually attempt higher engine speeds until  
familiar with operation at full throttle engine  
speed.  
the wheels to go over while the mower is moving  
at least a 45 degree angle to the curb. To drive  
off a curb, first try driving up onto it to make sure  
the curb is not too high. If the curb is not too  
high, drive the right-front caster off first while  
driving toward the curb at a 45 degree angle (the  
curb should be to your right). Then, maintain  
that 45 degree angle so the left caster goes  
over, then the right-rear wheel, then the left rear  
wheel. Do NOT step off the mower during ANY  
maneuver.  
WARNING  
How to Stop and Park the Mower  
Come to a complete stop. If the blades are on,  
turn them off using the switch on the instrument  
panel. Make sure the control levers are in the  
exact neutral position. Set the parking brake,  
reduce the engine speed to idle, shut off the  
ignition switch to stop the engine and then  
remove the key from the ignition switch. The  
mower is now parked. Do not leave mower  
unattended on a sloped surface.  
Never drive straight onto or off a curb.  
Never drive straight onto or off a curb. If you do  
the whole procedure at a very sharp angle it will  
tend to minimize the contact of the mower deck  
with the curb and you will be able to more safely  
control the mower.  
Mowing on Varying Terrain  
See the Safety Instructions section of this  
manual, especially the parts on:  
Driving the Mower Over a Curb  
To climb a curb, first see the Safety Instructions  
section of this manual, especially the parts on:  
How to Adjust Neutral  
Next, raise the mower deck into the highest  
position. Then drive the mower in reverse at a  
45 degree angle to the curb (with the left side of  
the mower closest to the curb) until you are  
within an inch or two of the left-rear tire hitting  
the curb. Stop and then gradually bump into the  
curb with that tire until it is just on top of the  
curb. If the tire slips even while lurching the  
mower into the curb, then the curb is too high  
and you should use ramps or find another way.  
The mower should still be at a 45 degree angle  
to the curb. Now, while maintaining the same  
angle to the curb, continue to back up until the  
right-rear tire is close to the curb. Using the  
same technique lurch the right tire onto the curb.  
After both wheels are on top of the curb, turn the  
mower counterclockwise and back up so the left  
caster wheel comes over and last should be he  
right caster wheel as the mower is twisting to the  
left (counterclockwise). The technique works  
the best if you try not to drive backwards at a  
near 90 degree angle to the curb but get all of  
Neutral refers to the mower movement when the  
engine is set to full throttle, parking brake is off,  
and the control levers are in the neutral position.  
The mower should not move forward or  
backward during this time. If the mower is  
moving forward or rearward, the neutral setting  
must be adjusted. The hydraulic pump has a  
Return-to-Neutral (RTN) device built into the  
linkage of the pump. Before adjusting neutral, it  
is necessary to lift the rear drive wheels off the  
ground using a jack and stands. To make the  
adjustment, loosen the ¼” Allen bolt and rotate  
the RTN device on the pump corresponding to  
the wheel that needs adjustment. If the right  
wheel turns in the neutral position, then the right  
pump RTN needs to be adjusted. The RTN  
mechanism should be rotated until the neutral  
position is found and then retighten the ¼” allen  
bolt. Use care not to over tighten the allen bolt.  
Repeat the procedure on the other pump if  
necessary.  
9
 
 
increase the speed of the forward movement of  
the mower on that side.  
Changing the Speed/Sensitivity  
Adjustment  
The controls are initially set with the Speed/  
Sensitivity  
In the “faster” Speed/Sensitivity setting (this is  
the factory setting) neither rod should be  
lengthened so much that at full speed it pulls the  
pump control lever (on the sides of the pumps)  
against the internal pump stop. Therefore, to  
reach the maximum capable speed, the rods  
should be lengthened one turn at a time until  
you can feel, in the hand control, that the  
internal pump stop has been contacted. Then  
shorten the rod one turn (damage to the hydro  
pump will occur if the controls are adjusted in a  
way that put direct pressure on the internal  
pump stop). You will feel the slight resistance.  
There is no need to start the engine while  
checking this incrementally. Remember, this  
procedure does not apply if the Speed/  
Sensitivity Adjustment is in the slower setting.  
Otherwise you will wind the swivels way up the  
rods and the mower will go faster but will lose  
most or all of its reverse capability and then the  
gap between the handlebar and the control  
levers becomes excessive when at the neutral  
position.  
Adjustment in the  
faster, more  
sensitive position. If  
an operator is not  
completely familiar  
with the mower  
operation the  
operator may desire  
to decrease  
the ground speed. The slower setting has a  
corresponding decrease in the sensitivity of the  
controls. In other words, a given amount of  
movement of the control levers will cause about  
a 25-30% change in the ground speed making  
the controls less sensitive. After stopping the  
engine, the adjustment is made by removing the  
bolts that hold the control rods onto the control  
lever from the current holes in the control levers  
and reinstalling them and the rods into the  
alternate holes. The top holes closest to the  
control handles are for the faster, more sensitive  
setting and the bottom holes, farthest from the  
control handles, are the slower, less sensitive  
setting. BE SURE THE BOLTS IN THE  
CONTROL RODS ARE SECURELY IN PLACE  
EACH TIME YOU REMOVE THEM. You must  
then perform the Tracking Adjustment described  
below.  
If the rod is made longer it will increase the  
forward speed capability for that side of the  
mower and if the rod is made shorter it will slow  
down that side of the mower. So, if the mower is  
tracking to the left, either the left side needs to  
go faster (by lengthening the left-side rod) or the  
right side needs to go slower (by shortening the  
right-side rod). If the mower is tracking to the  
right, either the right side needs to go faster (by  
lengthening the right-side rod) or the left side  
needs to go slower (by shortening the left-side  
rod). It is important that neither rod should be  
lengthened too far, as mentioned above.  
How to Perform the Tracking  
Adjustment  
First ensure that the tire pressure is equal on  
both rear drive tires (18-22 psi) and also the  
front caster tires (30-40 psi). Drive the mower  
on a level parking lot with the engine at full  
throttle. Check that the mower drives in a  
straight line when both hand controls are held to  
the full speed position. If not, park the mower  
and stop the engine. The adjustment is made  
by loosening the jam-nuts on the control rods  
(this may need to be done to one or both control  
rods) and adjusting the control rods. Once the  
jam-nuts are loosened at the top and bottom of  
the control rod proceed to turning the control rod  
clockwise or counter-clockwise. Turning the  
control rod clockwise will shorten the control rod  
and slow the forward movement of the mower  
on that side. Turning the control rod counter-  
clockwise will lengthen the control rod and  
The only reference point to limit the adjustment  
from becoming extremely off is the relative  
position of the pump stop and the handlebar in  
the faster Speed/Sensitivity setting. Therefore, if  
everything is way off either because you are  
installing new parts (or other reasons) you  
should only use the faster Speed/ Sensitivity  
setting to get the tracking accurate and then  
change to the slower speed range and adjust  
the tracking only one or two turns on either side.  
After getting the mower to track straight, readjust  
the neutral adjustment on the pump by using a  
10  
 
 
¼” allen wrench at the Return-to-Neutral (RTN)  
mechanism, if necessary. It is normal to make  
these adjustments from time to time.  
caster tires between 30 and 40 psi. Higher  
pressures will help keep the caster tires on their  
rims when impacted from the side but give a  
harder ride. They do not have any tread but  
should be replaced when excessively worn.  
How to Test/Use the Blade  
Clutch/Brake Switch  
Height-of-Cut  
Before testing the blade clutch/brake operation,  
make sure the area is clear and there is nothing  
vulnerable to thrown objects from under the  
mower. No one should be near the mower deck  
or in its line of discharge. The discharge chute  
deflector should be in the down position. The  
parking brake should now be applied. Move the  
engine throttle to ¾ speed setting. When  
mowing, the engine speed should always be at  
its highest setting. The engine governor will  
regulate the engine according to the different  
mowing conditions at that setting. Place both  
feet firmly on the foot platform and turn on the  
blade clutch switch. Run blades for a minute or  
so. Try engaging and disengaging the blades a  
few times about 10 seconds apart. If the blades  
do not start and stop in a few seconds each  
time, service the blade brake system or contact  
your local Wright dealer. Under mowing load,  
the clutch’s life will be the greatest if engaged  
and disengaged at the ¾ throttle level.  
Before adjusting the height-of-cut be sure the  
mower engine is off, and all four tires have  
proper air pressure. Check for even tire wear.  
The height-of-cut can be adjusted the following  
way:  
• While holding the deck lift lever grip to the left  
of the upright, push down (with thumb or other  
hand) on the button at the top of the deck lift  
lever. With the button pushed down, pull back  
slightly and then move the deck lift lever  
forward to lower the deck or pull back to raise  
the deck. When the deck is at the desired  
height, release the button and make sure the  
internal stop block is fully locked into place.  
There is also a détente pin that can be used to  
insure the deck is not lowered to a cutting  
height that is lower than the lowest desired  
cutting height.  
Belt Tension Adjustment  
The pump drive belt is self-adjusting, and  
requires no adjustment, just replacement. The  
blade drive belt is self-adjusting also and  
requires no adjustment, just replacement.  
How to Test the Operator Presence  
Control (OPC) Switch  
With the parking brakes applied and the blades  
ON, try lifting your feet off the foot platform to  
test the Operator Presence Control switch  
(OPC). The engine should kill and the blades  
should stop within a few seconds. If not, service  
the OPC system or contact your local Wright  
dealer.  
How to Move the Mower if the Engine  
Won’t Start  
Rotate both of the hydro bypass valve levers on  
the side of each hydraulic pump about ½ turn  
counterclockwise. It is important not to over  
tighten these levers. Damage may occur to the  
pump if this valve is over tightened.  
Bleeding Air from the Hydraulic  
System  
WARNING  
Service and Adjustments  
Tire Maintenance and Pressure  
Whenever servicing the hydraulic system, it is of  
the utmost importance to keep any dirt or debris  
from getting into the system. Clean off all parts  
before disassembly and assembly. When any of  
the hydraulic parts are disconnected or removed  
or when the oil is changed, air must be bled from  
the system. If air is entrained in the system, loss  
of power, excessive heat, and damage to the  
hydraulic pumps may occur. First, make sure  
the oil level in the reservoir is correct. The level  
should be between 1”-1.5” below the top of the  
Excessively worn tire tread is dangerous on all  
hills. Replace drive tires with less than 3/32” of  
any tread groove left. Use tires with the tread  
pattern recommended by Wright Mfg., Inc. only.  
Keep the tire pressure in the drive tires between  
18 and 22 psi. Higher pressures will cause the  
tires to have less traction, which will force you to  
go slower and with less safety and give you a  
harder ride. Keep the tire pressure in the front  
11  
 
 
oil fill tube. Use fully synthetic oil: Mobil1 15W-  
50. Lift the mower so that the rear wheels are  
off the ground. Be careful to support the mower  
so that it will not fall or tip while the system is  
bled of air. With the bypass valves open and the  
engine running, slowly move the control levers  
back and forth five or six times. Now close the  
bypass valves and with the engine running,  
slowly move the control levers back and forth  
five or six times. It may be necessary to repeat  
the above steps until all the air is purged and the  
rear wheels are turning at normal speed. After  
purging is complete, adjust the oil level in the  
reservoir if necessary.  
Cleaning the Mower  
The underside of the mower deck should be  
checked and cleaned twice daily, and more  
often if the grass being mowed is lush or wet.  
The entire mower should be cleaned daily at the  
end of the work day.  
Cleaning should be done with a leaf blower or  
low-pressure compressed air. Wash with water  
only when necessary and do not use a pressure  
washer or nozzle as the water can enter  
electrical connections causing an electrical  
short, rust and corrosion. When washing with  
water, do so when the unit has cooled down.  
Washing a hot machine can cause various  
unseen system damage. If water is used for  
cleaning, immediately dry it with a leaf blower or  
low-pressure compressed air. Once the wash is  
complete, always lubricate and grease all  
applicable areas.  
Battery Service  
The battery is 12 volts and is a maintenance free  
battery. Charge the battery only if it will not start  
the mower properly. Remove the battery from  
the mower before charging. Follow the  
instructions of the battery charger for proper and  
safe charging of the battery.  
12  
 
 
Maintenance Interval Chart  
MAINTENANCE ITEM  
Inspect for cracks in frame, cutter deck or other steel parts  
Inspect all belts for wear, adjustment and alignment  
Check all bolts and nuts for tightness (tighten as necessary)  
Lubricate hand control lever pivot shafts with waterproof grease  
Check hydraulic oil reservoir level and fill as needed - Use SYNTHETIC oil - Mobil1  
15W-50  
X
X
X
X
X
X
X
X
*3  
*2  
X
X
X
X
X
X
X
X
X
X
X
X
X
Grease caster wheel bearings  
X
X
Check tire pressure; Rear tires 18-22 psi-Front tires 30-40 psi. Some Front Casters  
are equipped with non-pneumatic tires and do not require any air.  
Check and clean engine cooling fins  
Lubricate foot platform Operator Presence Control pivots and control rod with  
waterproof grease  
Replace fuel filter  
Lubricate choke control cable (if equipped) with WD-40  
Check engine oil and add as needed  
X
X
Engine *1  
Engine *1  
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Engine *1  
Engine *1  
Engine *1  
Engine *1  
Check for fuel or oil leakage - correct as needed  
Check and clean air intake screen  
Clean engine blower screen and fins with compressed air  
Clean mower with compressed air-do NOT use a pressure washer  
Check for loose hardware (e-clips, snap rings, nuts, etc.)  
Check blades for wear and sharpness (sharpen and balance or replace as necessary)  
Clean out debris under blade belt cover  
Scrape clean underside of cutter deck  
Check blade mounting bolts for proper tightness  
Check blade spindle mounting bolts for proper tightness  
Clean air cleaner foam element  
Inspect tires, replace as needed  
Inspect and tighten all hydraulic hoses  
Engine *1  
X
X
X
Adjust parking brake shoes to firmly stop wheels when engaged  
Clean air cleaner paper element  
X
Engine *1  
Engine *1  
Engine *1  
Engine *1  
Engine *1  
Clean and re-gap spark plug (replace as necessary)  
Change engine oil  
Change engine oil filter  
Replace air cleaner paper element  
Replace hydraulic oil filter with Original Wright filter  
system (replace worn parts)  
X
X
X
X
X
X
X
Inspect and replace (if necessary) worn main cutter deck idler pulleys or pulley  
bearings (if applicable)  
X
Replace (if necessary) excessively worn caster wheels and roller bearings  
Remove battery and clean battery, battery box and battery cable ends  
Clean combustion chamber  
Check and adjust valve clearance  
Clean and lap valve seating surface  
X
X
X
X
X
X
X
Engine *1  
Engine *1  
Engine *1  
NOTES:  
*1 - Refer to Engine Manufacturers Owners Manual  
*2 - Hydraulic fluid level should be 1"-1-1/2" below the top of the oil fill  
*3- Contact an authorized Dealer immediately if any cracks are found  
*The service intervals indicated are to be used as a guide. Service should be performed more frequently as necessary by operating conditions*  
13  
 
 
Maintenance Record  
Unit  
Hours  
Date  
Maintenance/Service Performed  
Shop/Technician  
14  
 
 
WRIGHT MANUFACTURING, INC. POWER EQUIPMENT LIMITED WARRANTY  
THIS WARRANTY SUPERSEDES ALL PREVIOUS ON UNITS WITH A RETAIL SALES DATE ON OR AFTER 04/01/05  
The WMI mower, including any defective part, must be returned to an  
Authorized WMI Service Dealer within the warranty period. The expense of lost  
production time and delivering the mower to the Authorized WMI Service Dealer  
for warranty work and the expense of returning it to the Owner after repair will  
be paid for by the Owner. WMI’s responsibility is limited to making the required  
repairs and no claim of breach of warranty shall be cause for cancellation or  
rescission of the contract of sale of any WMI mower. This Warranty does not  
apply to any mower that was delivered to an Owner prior to the Pre-Delivery  
Service as specified in the Owner’s Manual. This Warranty does not apply to  
any mower that was shipped in a crate to the Owner or delivered to the Owner  
by non-employees of an Authorized Dealer. For the Owner’s protection and a  
valid Warranty, please note: WMI does not permit Authorized Dealers to make  
non-face-to-face deliveries of the mower and any who are found doing so are  
subject to immediate cancellation as Authorized Dealers. This Warranty does  
not cover any mower that has been subject to misuse, neglect, negligence,  
burning in any fire, an accident, or that has been operated or maintained in any  
way contrary to the operating and maintenance instructions as specified in the  
Owner’s Manual. The Warranty does not apply to any damage to the mower  
that is the result of improper maintenance, or to any mower or parts that have  
not been assembled or installed as specified in the Owner’s Manual. The  
Warranty does not cover any mower that has been altered or modified changing  
performance or durability. In addition, the Warranty does not extend to repairs  
made necessary by normal wear, or by the use of parts or accessories which, in  
the reasonable judgment of WMI, are either incompatible with the WMI mower  
or adversely affect its operation, performance or durability.  
Wright Manufacturing, Inc. (hereinafter: WMI) warrants to the original owner that  
the new WMI mower accompanying this document will be free from  
manufacturing defects in materials or workmanship subject to the following  
limitations and exclusions. Any part of the WMI commercial mower  
manufactured by WMI and found, in the reasonable judgment of WMI, to be  
defective in materials or workmanship, will be repaired or replaced by an  
Authorized WMI Service Dealer without charge for parts and (except as  
excluded below) labor. This Warranty is limited to the original Owner and the  
mower this document was provided with and is not transferable. Dealer demo  
units with less than fifty hours when first retailed shall also be covered by this  
limited warranty. Proofs of Purchase, Authorized Dealer performed Pre-Deliver  
Service and the First Eight Hour Service will be required by the Authorized WMI  
Service Dealer to substantiate any warranty claims. All WMI warranty work  
must be performed by an Authorized WMI Service Dealer and item must be  
delivered to the dealer prior to the expiration of the warranty period. This  
Warranty is limited to the following specified periods from the date of the original  
retail purchase for defects in materials or workmanship and will commence upon  
the date of original retail purchase. This warranty shall apply only if the warranty  
registration form has been completed and returned to Wright Manufacturing, Inc.  
within 30 days from the date of original retail purchase. This warranty includes  
only the cost of parts and labor (when applicable). This warranty applies only to  
the replacement of defective or otherwise warrantable WMI OEM parts being  
replaced with WMI OEM parts.  
All parts and components (except as noted below) – 2 years  
Belts – 90 days  
Battery – 90 days  
Engine – warranty covered by engine manufacturer and handled  
through the respective Authorized engine Dealers  
WMI reserves the right to change or improve the design of any mower without  
assuming any obligation to modify any mower previously manufactured.  
All other implied warranties are limited in duration to the two (2) year warranty  
period or ninety (90) days for mowers used for rental purposes. Accordingly,  
any such implied warranties including merchantability, fitness for a particular  
purpose, or otherwise, are disclaimed in their entirety after the expiration for the  
appropriate two (2) year or ninety (90) day warranty period. WMI’s obligation  
under this Warranty is strictly limited to the repair or replacement of defective  
parts and WMI does not assume, or authorize anyone to assume for them, any  
other obligation. Some states do not allow limitations on how long an implied  
warranty lasts, so the above limitation may not apply.  
Exclusions:  
Any damage or deterioration due to normal use, wear and tear or exposure  
All filters, engine oil, hydraulic oil, tires and tubes  
Bent, fractured or broken parts occurring through impact or hard use  
Clutch: linings, anti-rotation failure or other failure due to improper  
replacement installation  
Cost of regular maintenance service, parts or adjustments  
Worn bearings (other than spindle bearings; see above)  
Worn bushings, cotters, clips, pins and retainers  
Grease fittings/zerks  
Paint, paint fading, cosmetic imperfections and steel surface imperfections  
Fabric, cushion and rubber grip wear or damage  
Cutting blades, light bulbs, fuses  
Damage due to loose pulleys on shafts  
Damage due to loose wheel hubs on tapered hydraulic motor shafts  
Fire Damage  
WMI assumes no responsibility for incidental, consequential or other damages  
including, but not limited to, expense for gasoline, expense of delivering the  
mower to an Authorized WMI Service Dealer and expense of returning it to the  
Owner, damage by fire, mechanic’s travel time, telephone charges, rental of a  
like product during the time warranty repairs are being performed, travel, loss or  
damage to personal property, loss of revenue, loss of use of the power  
equipment, loss of time or inconvenience. Some states do not allow the  
exclusion or limitation of incidental or consequential damages, so the above  
limitation or exclusion may not apply.  
Abrasion or corrosion wear or damage  
Repair Parts Replaced During Original Warranty  
This Warranty gives you specific legal rights, and you may also have other rights  
which vary from state to state.  
All Repair parts (excluding wear or otherwise excluded items)  
installed during the warranty period are warranted until the end of  
the respective original period according to the categories above  
except in the case that the respective original warranty period  
expires in less than ninety (90) days after the installation of the  
part(s). If this happens then the parts are warranted for a total of  
ninety (90) days from the time of their installation.  
This Warranty applies to all WMI mowers sold in the United States of America  
and  
Canada.  
For the location of the Authorized WMI Service Dealer nearest you or other  
information, such as, Parts Lists and Owner’s Manuals visit our website  
Rental Use  
The above warranty periods are limited to maximum of ninety (90)  
days for mowers that are used for rental purposes.  
Wright Manufacturing, Inc.  
4600-X Wedgewood Blvd.  
Frederick, MD 21703  
15  
 
4600X Wedgewood Blvd  
Frederick, MD 21703  
 

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