Bush Hog Lawn Mower Commercial Series User Manual

®
BUSH HOG  
COMMERCIAL SERIES  
Zero Turn Mower  
Operator’s Manual  
l
l
ASSEMBLY OPERATION MAINTENANCE  
107  
$4.00  
50048984  
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COMMERCIAL SERIES  
ZERO TURN RIDING MOWER  
TABLE OF CONTENTS  
SECTION  
PAGE  
SECTION  
PAGE  
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Dealer Preparation Check List . . . . . . . . . 3  
Safety Alert Symbols . . . . . . . . . . . . . . . . 4  
Safety Precautions . . . . . . . . . . . . . . . . . . 5  
Federal Laws and Regulations. . . . . . . . . 8  
Battery . . . . . . . . . . . . . . . . . . . . . . . . . .16  
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . .16  
Mower Blades . . . . . . . . . . . . . . . . . . . . .16  
Motion Control Adjustment . . . . . . . . . . .17  
Drive Adjustments . . . . . . . . . . . . . . . . .17  
Test Drive Operations . . . . . . . . . . . . . . .17  
Leveling The Deck . . . . . . . . . . . . . . . . .18  
Counterbalance Spring . . . . . . . . . . . . . .18  
Deck Belt Adjustment . . . . . . . . . . . . . .18  
Deck Belt Replacement . . . . . . . . . . . . .18  
Start Up Maintenance . . . . . . . . . . . . . . .19  
Troubleshooting . . . . . . . . . . . . . . . . . .120  
I
INTRODUCTION AND DESCRIPTION . . 9  
Introduction. . . . . . . . . . . . . . . . . . . . . . . . 9  
Description . . . . . . . . . . . . . . . . . . . . . . . . 9  
Specifications . . . . . . . . . . . . . . . . . . . . . 10  
II OPERATION. . . . . . . . . . . . . . . . . . . . . . 11  
General Safety . . . . . . . . . . . . . . . . . . . . 11  
Pre-Operation Checklist . . . . . . . . . . . . . 11  
Operation . . . . . . . . . . . . . . . . . . . . . . . . 12  
Mowing Recommendations . . . . . . . . . . 14  
IV ASSEMBLY . . . . . . . . . . . . . . . . . . . . . .21  
Wiring Schematics . . . . . . . . . . . . . . . . .22  
Safety Decals . . . . . . . . . . . . . . . . . . . . .24  
Torque Specifications . . . . . . . . . . . . . . .26  
Optional Equipment List . . . . . . . . . . . . .27  
Slope Angle Guide . . . . . . . . . . . . . . . . .28  
III MAINTENANCE . . . . . . . . . . . . . . . . . . . 15  
Maintenance Schedule. . . . . . . . . . . . . . 15  
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
RETAIL CUSTOMER’S RESPONSIBILITY  
UNDER THE BUSH HOG WARRANTY  
It is the Retail Customer and/or Operator’s responsibility to read the Operator’s Manual, to  
operate, lubricate, maintain and store the product in accordance with all instructions and  
safety procedures. Failure of the operator to read the Operator’s Manual is a misuse of this  
equipment.  
It is the Retail Customer and/or Operator’s responsibility to inspect the product and to have  
any part(s) repaired or replaced when continued operation would cause damage or exces-  
sive wear to other parts or cause a safety hazard.  
It is the Retail Customer’s responsibility to deliver the product to the authorized Bush Hog  
Dealer, from whom he purchased it, for service or replacement of defective parts which are  
covered by warranty. Repairs to be submitted for warranty consideration must be made with-  
in forty-five (45) days of failure.  
It is the Retail Customer’s responsibility for any cost incurred by the Dealer for traveling to or  
hauling of the product for the purpose of performing a warranty obligation or inspection.  
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COMMERCIAL ZERO TURN RIDING MOWER LIMITED WARRANTY  
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO  
Bush Hog warrants to the original purchaser of this new Zero Turn Riding Mower, purchased from an  
authorized Bush Hog dealer, that the equipment be free from defects in material and workmanship for a period  
of three (3) years from date of retail sale. The three year limited warranty (third year parts only) includes drive  
train, electromagnetic clutch, deck and cutter spindles. See dealer for complete details. The obligation of Bush  
Hog to the purchaser under this warranty is limited to the repair or replacement of defective parts. NOTE: This  
warranty covers parts and labor for the first two years and parts only during the third year.  
Replacement or repair parts installed in the equipment covered by this limited warranty are warranted  
for ninety (90) days from the date of purchase of such part or to the expiration of the applicable new equip-  
ment warranty period, whichever occurs later. Warranted parts shall be provided at no cost to the user at an  
authorized Bush Hog dealer during regular working hours. Bush Hog reserves the right to inspect any equip-  
ment or parts which are claimed to have been defective in material or workmanship.  
DISCLAIMER OF IMPLIED WARRANTIES & CONSEQUENTIAL DAMAGES  
Bush Hog’s obligation under this limited warranty, to the extent allowed by law, is in lieu of all war-  
ranties, implied or expressed, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS  
FOR A PARTICULAR PURPOSE and any liability for incidental and consequential damages with respect to  
the sale or use of the items warranted. Such incidental and consequential damages shall include but not be  
limited to: transportation charges other than normal freight charges; cost of installation other than cost  
approved by Bush Hog; duty; taxes; charges for normal service or adjustment; loss of crops or any other loss of  
income; rental of substitute equipment, expenses due to loss, damage, detention or delay in the delivery of  
equipment or parts resulting from acts beyond the control of Bush Hog.  
THIS LIMITED WARRANTY SHALL NOT APPLY:  
1. To transportation to and from dealership or service calls made by dealers, ie, driving time, towing,  
pickup and delivery.  
2. To vendor items which carry their own warranties, such as engines, batteries, tires, and tubes.  
3. If the unit has been subjected to misapplication, abuse, misuse, negligence, fire or other accident.  
4. If parts not made or supplied by Bush Hog have been used in connection with the unit, if, in the sole judge-  
ment of Bush Hog such use affects its performance, stability or reliability.  
5. If the unit has been altered or repaired outside of an authorized Bush Hog dealership in a manner  
which, in the sole judgement of Bush Hog, affects its performance, stability or reliability.  
6. To normal maintenance service and normal replacement items such as gearbox lubricant, hydraulic fluid,  
worn blades, or to normal deterioration of such things as belts and exterior finish due to use or  
exposure.  
7. To expendable or wear items such as teeth, chains, sprockets, belts, springs and any other items that in the  
company’s sole judgement is a wear item.  
NO EMPLOYEE OR REPRESENTATIVE OF BUSH HOG IS AUTHORIZED TO CHANGE THIS LIM-  
ITED WARRANTY IN ANY WAY OR GRANT ANY OTHER WARRANTY UNLESS SUCH CHANGE IS MADE  
IN WRITING AND SIGNED BY BUSH HOG’S SERVICE MANAGER, POST OFFICE BOX 1039, SELMA,  
ALABAMA 36702-1039.  
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO  
Record the model number, serial number and date  
purchased. This information will be helpful to your  
dealer if parts or service are required.  
MODEL NUMBER  
SERIAL NUMBER  
MAKE CERTAIN THE WARRANTY REGISTRATION  
CARD HAS BEEN FILED WITH BUSH HOG/  
SELMA, ALABAMA  
DATE OF RETAIL SALE  
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DEALER PREPARATION CHECK LIST  
COMMERCIAL ZERO TURN RIDING MOWER  
BEFORE DELIVERING MACHINE — The following check list should be completed.  
Use the Operator’s Manual as a guide.  
1. Engine has been serviced.  
2. Battery fluid level is checked.  
3. Low oil pressure warning buzzer checked for operation.  
4. Operator interlock switches checked for operation.  
5. Assembly completed.  
6. All fittings lubricated.  
7. Hydraulic Reservoir filled with oil.  
8. All shields in place and in good condition.  
9. Roll-over Protective Structure is installed and retractable seat belt functions properly.  
10. All fasteners torqued to specifications given in Torque Chart.  
11. All decals in place and readable. (See decal page.)  
12. Overall condition good (i.e. paint, welds)  
13. Parking brake checked and adjusted, if necessary.  
14. Steering checked and adjusted, if necessary.  
15. Check tire pressure.  
16. Operators manual has been delivered to owner and he has been instructed  
on the safe and proper use of the cutter.  
Dealer’s Signature  
Purchaser’s Signature  
THIS CHECKLIST TO REMAIN IN OWNER’S MANUAL  
It is the responsibility of the dealer to complete the procedures listed  
above before delivery of this implement to the customer.  
WARRANTY REGISTRATION AND DELIVERY REPORT  
It is the responsibility of the Dealer to do the following:  
Complete the Warranty Registration and Delivery Report  
Return the pre-addressed card copy to Bush Hog, L.L.C.  
Retain pink copy for dealership records  
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Safety Alert Symbol  
This Safety Alert Symbol means: “ATTENTION! BECOME ALERT!  
YOUR SAFETY IS INVOLVED!”  
This symbol is used to call attention to safety  
precautions that should be followed by the  
operator to avoid accidents. When you see this  
symbol, carefully read the message that follows  
and heed its advice. Failure to comply with safe-  
ty precautions could result in death or serious  
bodily injury.  
Safety Signs Signal Words  
The signal words DANGER, WARNING, AND CAUTION are used on the equipment safety signs. These words  
are intended to alert the viewer to the existence and the degree of hazard seriousness.  
This signal word indicates a potentially hazardous situation  
which, if not avoided, will result in death or serious injury.  
White letters on RED  
This signal word indicates a potentially hazardous situation  
which, if not avoided, could result in death or serious injury  
It may also be used to alert against unsafe practices.  
Black letters on ORANGE  
This signal word indicates a potentially hazardous situation exist  
which, if not avoided, may result in minor or moderate injury.  
It may also be used to alert against unsafe practices.  
Black letters on YELLOW  
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IMPORTANT SAFETY PRECAUTIONS  
This symbol is used to call attention to safe-  
ty precautions that should be followed by  
the operator to avoid accidents. When you  
see this symbol, carefully read the message  
that follows and heed its advice. Failure to  
comply with safety precautions could result  
in serious bodily injury.  
In addition to the design and configuration of equipment, hazard control and accident prevention are depen-  
dent upon the awareness, concern, prudence and proper training of personnel in the operation, transport,  
maintenance and storage of equipment. Lack of attention to safety can result in accident, personal injury,  
reduction of efficiency and worst of all—loss of life. Watch for safety hazards and correct deficiencies prompt-  
ly. Use the following safety precautions as a general guide to safe operations when using this machine.  
Additional safety precautions are used throughout this manual for specific operating and maintenance proce-  
dures. Read this manual and review the safety precautions often until you know the limitations.  
ACCIDENT PATTERNS TO AVOID  
1. CONTACT WITH THE ROTATING BLADE - This accident usually happens when the operator is clear-  
ing the discharge chute of grass, (especially when the grass is wet), or when the operator adjusts the  
machine without turning it off and waiting for the blades to completely stop.  
2. PROPELLED OBJECTS - Sticks, rocks, wires, and other objects can be propelled out through the dis-  
charge chute or from under the mower housing. Bystanders are particularly vulnerable.  
3. GRASS DISCHARGE CHUTE - The mower shall not be operated without the grass discharge chute  
in its lowered position.  
4. OVERTURNING - This happens when riding mowers are used on steep slopes, embankments or hills.  
The operator in these cases can come in contact with blades or sustain injuries during a fall.  
5. MOWER RUNNING OVER THE VICTIM - This usually happens when a riding mower is driven in reverse.  
The accident victims are most often young children whom, unseen by the operator of the mower, were in  
the area being mowed.  
WE SHARE YOUR DESIRE TO PROTECT YOURSELF, YOUR FAMILY, YOUR FRIENDS AND YOUR  
NEIGHBORS FROM ACCIDENTAL INJURY. OBSERVING AND ENFORCING THE FOLLOWING GUIDE  
LINES WILL HELP TO INSURE THE SAFETY OF EVERYONE.  
SAFETY INSTRUCTIONS AND RECOMMENDATIONS  
1. PEOPLE WHO OPERATE, SERVICE, OR ARE OTHERWISE ASSOCIATED with the Zero Turning  
Riding Mower should be trained in its proper use and warned of its dangers. Before operating, adjusting,  
or servicing the Zero Turning Riding Mower they should read and understand this entire manual and the  
engine manual.  
2. AVOID CONTACT WITH MOVING PARTS. Keep hands and feet from under mowing deck and away  
from blades at all times. Turn engine (motor) off if you must unclog the chute.  
3. AVOID HILLS AND SLOPES. Use EXTREME caution when mowing and/or turning on slopes as loss of traction  
and/or tip-over could occur. Drive slower on slopes. DO NOT mow slopes greater than 15 degrees. Watch for ditch-  
es, holes, rocks, dips and rises, which change the operating angle. Keep away from drop-offs and steep banks. Avoid  
sudden starts when mowing uphill - mower may tip backwards. Loss of traction may occur going downhill - weight  
transfer to the front wheels may cause drive wheels to slip and cause loss of braking. DO NOT mow slopes when  
grass is wet - slippery conditions affect steering and reduce traction and braking. The operator is responsible for safe  
operation on slopes.  
4. DISENGAGE POWER TO MOWER BEFORE BACKING UP. Do not mow in reverse unless absolutely  
necessary and then only after turning around and observing the entire area behind the mower. Go slowly.  
Most “running over victim” accidents occur in reverse.  
5. BEGINNING OPERATORS SHOULD LEARN HOW TO STEER the Zero Turning Riding Mower before  
attempting to mow. Start with slow engine speed and drive without the blades engaged in open area until  
comfortable with the machine.  
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SAFETY CONTINUED  
6. KNOW HOW TO STOP QUICKLY. Know the location and operation of every control, especially how to brake and  
how to disengage the mower blades.  
7. DO NOT MOVE THE CONTROL LEVERS from forward position to reverse position rapidly. The speed  
and/or direction of travel is affected instantly by movement of the Control Levers.  
8. DO NOT ALLOW CHILDREN TO OPERATE MOWER. Do not allow others who have not had instruc-  
tions to operate mower. Do not operate the mower when children or others are in the area.  
9. ALWAYS TURN ENGINE OFF AND REMOVE KEY before leaving mower to prevent children and  
inexperienced operators from starting the engine. Never leave the mower unattended with engine run-  
ning. Always wait for all moving parts and all sounds to stop before leaving operator’s seat. Always set  
the parking brake on an unattended mower.  
10. WEAR STURDY, ROUGH-SOLED WORK SHOES AND CLOSE-FITTING TROUSERS AND SHIRTS.  
Never operate mower in bare feet, sandals or sneakers.  
11. WEAR PERSONAL PROTECTIVE EQUIPMENT such as, but not limitied to, protection for eyes, ears, feet, hands  
and head when operating or repairing equipment. Do not wear loose clothing or jewelry that may catch on equip-  
ment moving parts.  
12. NEVER CARRY PASSENGERS.  
13. KNOW THE AREA YOU ARE TO MOW. Watch for hidden dangers such as rocks, roots, sticks, holes,  
bumps, and drop-offs, etc. Before mowing, pick up all debris in area to be mowed. Sharp and hard  
objects can be propelled at a high speed and can act like shrapnel. Walk through tall grass BEFORE  
MOWING to make sure there are no hidden dangers. Mow higher than desired in tall grass to expose  
any hidden objects and/or obstacles, clean the area, and then mow to the desired height.  
14. BE SURE THE AREA IS CLEAR of other people before mowing. Stop machine if anyone enters the area.  
15. NEVER REFUEL A MOWER INDOORS. Allow the engine time to cool before refueling. Unseen vapors may be  
ignited by a spark. Always clean up spilled gasoline. Never run the engine indoors in a garage  
or any other closed building. Allow engine to cool before storing in any enclosure. The engine exhaust  
and gasoline fumes are dangerous.  
16. 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. Always make sure the gas  
cap is in place.  
17. DO NOT SMOKE AROUND THE MOWER or the gasoline storage container. Gasoline fumes can easi-  
ly ignite.  
18. KEEP GASOLINE IN A WELL-VENTILATED AREA away from your living quarters and in tightly  
capped safety cans. Never store mower with gasoline in the tank inside a building where fumes may  
reach open flame or spark.  
19. DISENGAGE BLADES, STOP ENGINE, ENGAGE PARKING BRAKE AND REMOVE IGNITION KEY before any  
servicing. Be sure all moving parts and all sounds have stopped. Let engine cool and disconnect the spark plugs so  
the engine cannot start by accident.  
20. KEEP ALL NUTS, BOLTS, AND SCREWS TIGHT to be sure equipment is in safe working condition, espe-  
cially blade bolts.  
21. VEHICLE SHOULD BE STOPPED AND INSPECTED FOR DAMAGE after striking a foreign object and  
the damage should be repaired before restarting and operating the equipment. Stop immediately and  
check for damage or loose parts if mower should start vibrating.  
22. DISENGAGE BLADES BEFORE DRIVING ACROSS WALKS or projecting objects or transporting.  
23. KEEP SAFETY DEVICES AND GUARDS IN PLACE. If any of the safety switches become inoperable,  
have them repaired immediately.  
24. DO NOT STEP OR STAND ON THE MOWER HOUSING. Step or stand only on the tread areas on the deck.  
25. WATCH OUT FOR TRAFFIC near roadways and when crossing roads.  
26. THIS MACHINE IS NOT MEANT FOR HIGHWAY OR STREET USE. It is not a recreational vehicle and it should not  
be operated as such.  
27. WHEN FEASIBLE, DO NOT USE MOWER WHEN GRASS IS WET OR SLIPPERY.  
28. MOW ONLY IN DAYLIGHT OR GOOD ARTIF ICIAL LIGHT.  
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SAFETY CONTINUED  
29. ALWAYS DISENGAGE THE MOWER BLADE CLUTCH when transporting.  
30. Do not operate the mower under influence of drugs or alcohol.  
31. Do not change the engine governor settings or overspeed the engine. Operating an engine at excessive speed may  
increase the hazard of personal injury.  
TOWING  
1. Use for towing only if equipped with a Bush Hog hitch kit. Do not attach towed equipment except at the hitch point.  
2. Never allow children or others in or on towed equipment.  
3. On slopes, the weight of the towed equipment may cause loss of traction and loss of control.  
4. Travel slowly and allow extra distance to stop.  
SLOPE OPERATION  
DANGER  
POTENTIAL HAZARD  
Mowing on wet grass or steep slopes can cause  
sliding and loss of control.  
Safe  
WHAT CAN HAPPEN  
Zone  
Wheels dropping over edges, ditches, steep banks,  
or water can cause injury, or death by drowning.  
Danger  
Zone  
HOW TO AVOID THE HAZARD  
Do not mow slopes when grass is wet.  
Water  
Do not mow near drop-offs or near water.  
Do not mow slopes greater than 15 degrees.  
Reduce speed and use extreme caution on slopes.  
Avoid sudden turns or rapid speed changes.  
1. Use EXTREME caution when mowing and/or turning on slopes as loss of traction and/or tip-over could occur. The  
operator is responsible for safe operation.  
2. See inside of the back cover to determine the approximate slope angle of the area to be mowed.  
3. Use a walk behind mower and/or a hand trimmer near drop-offs, ditches, steep banks or water. This area can be dangerous.  
4. Progressively greater care is needed as the slope increases.  
5. Always avoid sudden starting or stopping on a slope. If tires lose traction, disengage the blades and proceed slowly down the slope.  
6. Avoid sudden starts when mowing uphill. Mower may tip backwards.  
7. Be aware that loss of traction may occur going downhill. Weight transfer to the front wheels may cause drive wheels to slip and  
cause loss of braking and steering.  
8. Watch for ditches, holes, rocks, dips, and rises that change the operating angle, as rough terrain could overturn the machine. Tall  
grass can hide obstacles.  
9. Remove or mark obstacles such as rocks, tree limbs, etc. from the ,mowing area. Tall grass can hide obstacles.  
10. Use extreme care with grass catches or attachments. These can change the stability of the machine and cause loss of control.  
11. Follow the manufacturer’s recommendations for counterweights to improve stability.  
12.. Check carefully for overhead clearances (ie. branches, doorways, and electrical wires) before driving under objects and do not  
contact them.  
SLOPE ANGLE GUIDE LOCATED INSIDE REAR COVER  
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IMPORTANT FEDERAL LAWS AND REGULATIONS* CONCERNING  
EMPLOYERS, EMPLOYEES AND OPERATIONS.  
*(This section is intended to explain in broad terms the concept and effect of the following federal laws and  
regulations. It is not intended as a legal interpretation of the laws and should not be considered as such).  
U.S. Public Law 91-596 (The Williams-Steiger Occupational and Health Act of 1970) OSHA  
This Act Seeks:  
“...to assure so far as possible every working man and woman in the nation safe and healthful working  
conditions and to preserve our human resources...”  
DUTIES  
Sec. 5 (a) Each employer—  
(1) shall furnish to each of his employees employment and a place of employment  
which are free from recognized hazards that are causing or are likely to cause  
death or serious physical harm to his employees;  
(2) shall comply with occupational safety and health standards promulgated under  
this Act.  
(b) Each employee shall comply with occupational safety and health standards  
and all rules, regulations and orders issued pursuant to this Act which are  
applicable to his own actions and conduct.  
OSHA Regulations  
Current OSHA regulations state in part: “At the time of initial assignment and at least annually thereafter, the  
employer shall instruct every employee in the safe operation and servicing of all equipment with which the  
employee is, or will be involved.” These will include (but are not limited to) instructions to:  
Keep all guards in place when the machine is in operation;  
Permit no riders on equipment;  
Stop engine, disconnect the power source, and wait for all machine movement to stop before  
servicing, adjusting, cleaning or unclogging the equipment, except where the machine must be  
running to be properly serviced or maintained, in which case the employer shall instruct employees  
as to all steps and procedures which are necessary to safely service or maintain the equipment.  
Make sure everyone is clear of machinery before starting the engine, engaging power, or operating  
the machine.  
Child Labor Under 16 Years Old  
Some regulations specify that no one under the age of 16 may operate power machinery. It is your  
responsibility to know what these regulations are in your own area or situation. (Refer to U.S. Dept. of  
Labor, Employment Standard Administration, Wage & Home Division, Child Labor Bulletin #102.)  
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SECTION I  
INTRODUCTION AND DESCRIPTION  
INTRODUCTION  
smooth, even cut is desired and superior maneuver-  
ability is needed. The tractor unit consists of either a  
21 hp or 25 hp Kawasaki or a 23 hp Kohler twin cylin-  
der engine. The engine has a pressurized oil lubrica-  
tion system with spin-on type filter, fused electronic igni-  
tion, electric start and a 12.5 gallon fuel system.  
We are pleased to have you as a Bush Hog cus-  
tomer. Your Bush Hog Zero Turn Riding Mower has  
been carefully designed to give maximum service  
with minimum down time. This manual is provided to  
give you the necessary operating and maintenance  
instructions for keeping your mower in top operating  
condition. Please read this manual thoroughly.  
Understand what each control is for and how to use  
it. Observe all safety precautions decaled on the  
machine and noted throughout the manual for safe  
operation of the implement. If any assistance or  
additional information is needed, contact your autho-  
rized Bush Hog dealer.  
Two hydrostatic pumps and two wheel motors are  
used for propelling and steering. The pumps are belt  
driven by the engine output shaft. One lever for each  
drive controls both speed and direction. This inde-  
pendent control of each drive wheel coupled with  
continuously variable speed selection gives the Zero  
Turn mower exceptional maneuverability.  
NOTE:  
The mower attachment is available in 49” or 55” and  
61” cutting widths. The mower has three cutting  
blades, driven by an electromagnetic clutch through  
a single v-belt.  
All references made to right, left, front, rear, top or  
bottom is as viewed facing the direction of forward  
travel.  
DESCRIPTION  
The Zero Turn is intended for use on large lawns  
and other frequently maintained areas where a  
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CONTROLS  
CONTROL LOCATIONS  
OPERATOR INTERLOCK SYSTEM  
1
Ignition Key -Starts and stops engine.  
Engine Throttle - Controls engine speed.  
Your Bush Hog Zero Turn Riding Mower is equipped  
with an Operator Interlock System that is designed to  
help prevent possible serious injuries. Understanding  
and maintaining this system is vital for safe operation.  
2
3
4
5
6
Two Steering/Speed Control Levers - In front of  
seat at side. (See page 21)  
PTO Switch - Engages electric clutch which  
engages mower blades.  
To Start Engine:  
1. Blades (PTO) must be disengaged.  
2. Control levers in neutral (swung out).  
3. Parking brake set.  
Parking Brake Lever - Engages parking brake.  
(See page 21)  
Cutting Height Adjust Pin - Sets cutting height to  
desired position. (See page 12)  
The Engine Will Kill If:  
1. The operator leaves the seat with:  
a. The control levers out of neutral (swung in).  
b. The blades are engaged.  
c. The parking brake is off.  
7
8
Choke - Aids in starting engine.  
Light Switch (Optional)  
d. All of the above.  
2. The park brake is on before the control levers  
are swung in.  
9
Hour Meter / Tachometer  
10 Warning Lights / Audible Alert for high engine  
temperature (Kohler models only) and oil  
pressure.  
DO NOT OPERATE MOWER IF SAFETY SWITCH-  
ES ARE NOT OPERATING PROPERLY.  
11 Fuel Tank Site Lines - Monitor amount of fuel in  
tank. (See page 14)  
WARNING  
12 DC Power Outlet (See page 14)  
DO NOT OPERATE MACHINE UNLESS  
INTERLOCK SYSTEM FUNCTIONS PROP-  
ERLY. FAILURE TO HEED THIS WARNING  
MAY RESULT IN SERIOUS INJURY, DEATH  
OR EQUIPMENT DAMAGE.  
10  
9
7
8
2
TRACTOR SPECIFICATIONS  
Tread Width -49” Deck models - Outside Tires . . . . . . 50”  
55” Deck models - Outside Tires . . . . . . 52”  
1
4
61” Deck models - Outside Tires . . . . . . 55”  
Height - To top of seat back . . . . . . . . . . . . . . . . . . . . 50”  
Fuel Tank - . . . . . . . . . . . . . . . . . . . . . . . . . . 12.5 gallons  
Hydrostatic Fluid Reservoir . . . . . . . . . . Approx. 1 gallon  
Hydrostatic Pumps- All Models . . (2) Hydro-Gear pumps  
DECK SPECIFICATIONS  
ITEM  
Engines - 23 h.p. Kohler Command Pro  
25 h.p. Kawasaki  
Cutting width  
49”  
55”  
61”  
21 h.p. Kawasaki  
Cutting Height......................1-1/2” to 5” in 1/4” increments  
Blades  
17”  
61”  
19”  
67”  
21”  
73”  
Tires - Front (49” & 55” Decks) . . . . . . . . . . . 13 x 5.0 - 6  
(61” Deck) . . . . . . . . . . . . . . . . . 13 x 6.5 - 6  
Drive - 49” Decks . . . . . . . . . . . . . . . 23 x 8.5 -12  
55” Decks . . . . . . . . . . . . . . . 24 x 9.5 - 12  
Overall width  
including chute  
61” Decks. . . . . . . . . . . . . . . . 24 x 12 - 12  
Material thickness - Deck 10 GA.  
7 GA.  
7 GA.  
Spindle bearing......................................25 mm.................  
10  
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SECTION II  
OPERATION  
8. Inspect V-belts  
GENERAL SAFETY  
Only qualified people familiar with this operator’s  
manual should operate this machine. Operator  
should wear hard hat, safety glasses, and safety  
shoes. Avoid loose fitting clothing or jewelry. The  
operator should read, understand and practice all  
safety messages shown on the caution, warning and  
danger decals affixed to the machine to avoid seri-  
ous injury or death. Before beginning operation, clear  
work area of any objects that may be picked up and  
thrown by mower. Check for ditches, stumps, holes  
or other obstacles that could upset power unit or  
damage mower. Tall grass can hide obstacles.  
Always push steering levers apart, set parking brake,  
disengage PTO, turn off engine, and allow blades to  
come to a complete stop before leaving operator’s  
seat. Do not operate without all shields in place and  
in good condition.  
9. Check tire pressure (Use low pressure gauge):  
Front Tires - 15 psi, Drive Tires - 15 psi  
10. Make sure underside of mower deck is free of  
grass.  
11. Make sure mower blades are sharp and secured  
tightly.  
12. Clean the air intake screen on the engine if  
necessary.  
13. Perform any other maintenance as it becomes  
necessary. (See “Maintenance” section)  
14.Check low oil pressure warning buzzer for opera-  
tion. (It should “sound-off” whenever ignition key  
is in the “on” position, but engine is not running.)  
15. Check parking brake operation by disengaging  
hydrostatic pumps (freewheeling position), and  
placing the brake lever in the “on” position.  
Attempt to rock tractor by hand. Both drive wheels  
should be locked. When the brake handle is in the  
“off” position, both drive wheels should turn freely.  
If there is a problem in either position, refer to  
adjustment procedure in the maintenance section.  
PRE-OPERATION CHECKLIST  
1. Make sure fuel tank is full. Use regular unleaded  
gasoline. See engine manual for more details.  
WARNING  
AVOID SERIOUS INJURY OR DEATH:  
GASOLINE IS EXTREMELY FLAMMABLE AND  
EXPLOSIVE UNDER CERTAIN CONDITIONS.  
REFUEL IN A WELL VENTILATED AREA WITH  
ENGINE STOPPED.  
16. Seat Adjustments: The high-back full suspension  
seat has a variable rate suspension system,  
adjustable lumbar support and sliding seat to  
accomodate different operators.  
DO NOT SMOKE OR ALLOW FLAMES OR  
SPARKS IN THE REFUELING AREA OR  
WHERE GASOLINE IS BEING STORED.  
DO NOT OVERFILL FUEL TANK. AFTER  
REFUELING, MAKE CERTAIN THE TANK CAP  
IS CLOSED PROPERLY AND SECURELY.  
BE CAREFUL NOT TO SPILL FUEL WHEN  
REFUELING. FUEL VAPOR OR SPILLED FUEL  
MAY IGNITE. IF ANY FUEL IS SPILLED, MAKE  
SURE THE AREA IS DRY BEFORE STARTING  
THE ENGINE.  
Operator Weight Adjustment Knob - Turn the knob  
until the indicator position closely matches your  
weight to give the most comfortable ride.  
Adjustable Lumbar Knob (Under left arm rest) -  
Turn knob clockwise or counter-clockwise to  
achieve desired support.  
Back Angle Adjustment Knob (Under right arm  
rest) -Turn knob clockwise or counter-clockwise to  
achieve desired support.  
KEEP OUT OF REACH OF CHILDREN  
2. Make sure dirt and foreign matter are kept out of  
fuel tank. Use a clean funnel and fuel can.  
Lever Release Seat Slides - Pull the lever outward  
to release the latch. Slide the seat forward or rear-  
ward to your most comfortable position and release  
the lever.  
3. Do not mix oil with gasoline.  
4. Do not use white, high test or premium gasoline.  
Do not use de-icers, carburetor cleaners or other  
such additives.  
WARNING  
5. Check the crankcase oil level. Make sure the  
engine is off. The mower should be parked on a  
level area. Do not overfill. (See your engine man-  
ual for more detailed instructions.)  
ENGINE EXHAUST GASES CONTAIN  
POISONOUS CARBON MONOXIDE.  
NEVER RUN ENGINE IN A CLOSED BUILDING  
OR CONFINED AREA.  
6. Check the hydrostatic transmission oil level. (See  
“Maintenance” section of this manual.)  
AVOID INHALING EXHAUST GASES.  
7. Check battery fluid level.  
11  
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OPERATION  
1. OPEN FUEL TANK SELECTOR VALVE left or  
right tank.  
Control Lever forward, depending on which  
direction you wish to turn.  
WARNING  
2. MOVE CONTROL LEVERS TO neutral “OUT”  
position by pushing each one straight sideways.  
AVOID SERIOUS INJURY OR DEATH:  
DO NOT MOVE STEERING LEVERS FROM  
FORWARD TO REVERSE OR REVERSE TO  
FORWARD POSITION RAPIDLY. A SUDDEN  
CHANGE IN DIRECTION MAY CAUSE LOSS OF  
CONTROL AND/OR DAMAGE TO EQUIPMENT.  
FOR SMOOTH, SAFE OPERATION, MOVE THE  
CONTROL LEVERS IN A GENTLE, SLOW  
MOTION, ESPECIALLY ON GRADES.  
3. SET PARKING BRAKE. Pull rearward to set.  
4. DISENGAGE MOWER BLADE CLUTCH by  
moving clutch switch to “OFF” (down) position.  
5. SET ENGINE CHOKE CONTROL for cold starts  
to full position.  
6. SET ENGINE THROTTLE TO 1/2 throttle.  
12. BRAKING: To brake mower, gently move  
Control Levers in the direction opposite to travel.  
If the parking brake is engaged with the Control  
Levers in the “IN” position the engine will stop.  
7. TURN IGNITION KEY to “START” position and  
release to “RUN” as soon as engine starts.  
NOTE: Prolonged cranking will damage starter  
motor and shorten the battery life.  
8. ADJUST ENGINE THROTTLE AND CHOKE for  
desired engine smoothness and speed. NOTE:  
When mowing, always run engine at full throttle.  
13. CUTTING HEIGHT ADJUSTMENT:  
1. Stop engine and move the control levers to  
the neutral position and engage the parking brake.  
2. Disengage the blades.  
3. Depress the deck lift foot pedal raising the  
deck to the transport position and place the pedal in  
the locked position.  
9. RELEASE PARKING BRAKE. Push brake lever  
forward to release.  
CAUTON  
If the operator is inexperienced with the zero  
turn mower lever steering/speed control, he/she  
should follow these recommendations:  
Disengage the mower blades. Go very slowly  
until thoroughly familiar with the machine. Keep  
away from fences, buildings, and other obstruc-  
tions. While becoming familiar with the machine,  
move the Control Levers smoothly and slowly.  
Practice until operation is smooth and efficient.  
4. Insert height adjustment pin into the hole cor-  
responding to the desired cutting height. See  
decal on the side of the deck lift plate.  
5. Depress the deck lift pedal and lower the deck to  
the selected mowing height.  
6. To transport, depress the lift foot pedal and lock in  
position, then move the height adjustment pin to the 5”  
position.  
7. The cutting height adjustment is only a recom-  
mended guide. During normal mowing cut only 1/3 of the  
grass blade. Set cutting height to achieve your desired  
results.  
10. A roll-over protection system (ROPS) is installed  
on your machine. Operate unit with the ROPS in  
the raised and locked position and use seat belt.  
There is no roll-over protection when the ROPS  
is down. If it is necessary to lower the ROPS, do  
not wear seat belt. Raise the ROPS as soon as  
clearance permits.  
CUTTING HEIGHT ADJUSTMENT DECAL  
WARNING  
MAKE SURE SEAT FRAME RETENTION  
CLICK-PINS ARE IN PLACE AFTER LIFT-  
ING SEAT PAN FOR SERVICE.  
11. TO DRIVE: Adjust seat forward or backward for  
operator comfort. Move the Control Levers to the  
“IN” position. Move Control Levers forward to  
move forward. Move levers slowly forward to  
increase speed. To reverse direction, move the  
Control Lever on the side to which you want to  
turn slightly rearward of the other Control Lever.  
To turn on a zero radius axis, go slowly and pull  
one Control Lever back and push the other  
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ANTI-SCALP ROLLER OR CASTER ADJUSTMENT:  
1. Stop engine and move the control levers to the  
neutral position and engage the parking brake.  
2. Disengage the blades.  
3. The Anti-Scalp deck rollers are adjustable up and  
down to provide improved deck flotation and scalping  
protection at various cutting heights. They are not  
intended to ride continously on the ground. Rollers should  
maintain .375” minimum clearance to ground. DO NOT  
adjust rollers to support deck. (Refer to photographs)  
WARNING  
Use EXTREME caution when mowing and/or  
turning on slopes as loss of traction and/or  
tip-over could occur. Drive slower on  
slopes. DO NOT mow slopes greater than 15  
degrees. Watch for ditches, holes, rocks,  
dips and rises, which change the operating  
angle. Keep away from drop-offs and steep  
banks. Avoid sudden starts when mowing  
uphill - mower may tip backwards. Loss of  
traction may occur going downhill - weight  
transfer to the front wheels may cause drive  
wheels to slip and cause loss of braking. DO  
NOT mow slopes when grass is wet - slip-  
pery conditions affect steering and reduce  
traction and braking. The operator is respon-  
sible for safe OPERATION ON SLOPES.  
14. ENGAGE MOWER BLADES by pulling  
up on the PTO clutch switch. The engine will not  
start if the PTO switch is engaged. If the engine  
is running while the PTO clutch is engaged and  
the operator leaves the seat, the engine will stop.  
15. TO STOP:  
A. Slow engine speed with throttle to slowest  
position  
B. Disengage the mower blade clutch by mov-  
ing the PTO clutch switch to the “OFF” position.  
C. Move Control Levers to neutral position and  
then to the “OUT” position.  
D. Set the parking brake.  
E. Turn ignition key to “OFF” position.  
F. Remove the key and wait for all movement  
and sound to cease before dismounting.  
CASTER ASSEMBLY (Optional on 61” Decks Only)  
ANTI-SCALP ROLLER  
Spacers may be positioned above and/or below the  
caster arm to adjust position.  
Roller Height Adjustment Holes  
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MOWING RECOMMENDATIONS  
WARNING  
1. Keep mower blades sharp.  
AVOID SERIOUS INJURIES TO OTHERS:  
ALWAYS REMOVE THE KEY FROM THE IGNI-  
TION SWITCH WHENEVER THE MOWER IS  
UNATTENDED TO PREVENT CHILDREN OR  
UNAUTHORIZED PERSONS FROM STARTING  
THE ENGINE.  
2. Make sure deck and discharge chute are clean.  
WARNING  
TO AVOID SERIOUS INJURY FROM BLADE  
CONTACT, POWER MUST BE OFF TO  
CLEAN DISCHARGE CHUTE  
16. PUMP BYPASS-TO MOVE THE TRACTOR  
WITHOUT POWER: The pump bypass valves  
are located on the front sides of each pump.  
Turn the control clockwise two complete  
turns to release the pump for free wheeling; turn  
them counter-clockwise for operation.  
DANGER  
KEEP HANDS AND FEET AWAY FROM  
UNDERNEATH MOWER TO AVOID SERIOUS  
INJURY OR DEATH.  
Pumps as seen from above. Use a rod through the  
hex head, or a 5/8” wrench to open or close the valve.  
WARNING  
ROTARY MOWERS CAN DISCHARGE  
OBJECTS AT HIGH SPEEDS. TO AVOID SERI-  
OUS INJURIES OR DEATH:  
OPERATE ONLY WITH SIDE BANDS IN  
GOOD REPAIR AND CHUTE OR GRASS  
CATCHER ATTACHMENT INSTALLED.  
KEEP  
CHILDREN,  
PETS,  
AND  
BYSTANDERS AWAY FROM THE WORK  
AREA.  
DO NOT OPERATE MOWER IN THE VICIN-  
ITY OF OTHER PERSONS.  
DISCHARGE AWAY FROM BUILDINGS,  
WALLS OR OTHER STRUCTURES.  
Fuel Tank  
Site Lines  
Operator Weight  
Adjustment Knob  
Seat Slide  
Release Lever  
Electrical  
Fuses  
Engine Oil  
Filler Cap  
Hydrostatic Fluid  
Reservoir Cap  
NOTE: To move the tractor without power, the  
pumps must be unlocked and in the free wheel posi-  
tion. Failure to do so could possibly damage the  
hydraulic motors. Never pull at more than 2 MPH.  
17. FUEL SHUT-OFF VALVE: Located on the front  
panel below the operator is the fuel directional valve.  
This valve has three positions for operations and  
each position is made in 1/4 turn increments. This  
directional valve has a shut off position and can be  
used when the machine will not be used for a few  
days or when the unit is transported to and from a  
work site.  
Fuel Flow  
Off  
Right Tank  
Left Tank  
Valve Position  
Down  
Right  
Left  
Cutting Height  
Adjustment Pin  
Fuel Tank  
Selector Valve  
DC  
Power Outlet  
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SECTION III  
MAINTENANCE  
CAUTION  
BEFORE PERFORMING ANY MAINTENANCE, TURN OFF ENGINE, REMOVE KEY AND DISCONNECT SPARK  
PLUGS. USE EXTREME CARE WHEN WORKING ON MACHINERY. DO NOT WEAR WATCH OR JEWELRY. DO  
NOT WEAR LOOSE FITTING CLOTHES, AND OBSERVE ALL COMMON SAFETY PRACTICES WITH TOOLS.  
IMPORTANT:  
BEFORE PERFORMING ANY SERVICE, MAINTENANCE OR REPAIR ON THE ENGINE, REFER TO THE  
RESPECTIVE ENGINE MANUFACTURERS’ MANUAL FOR SPECIFIC INFORMATION CONCERNING YOUR  
PARTICULAR BRAND OF ENGINE.  
MAINTENANCE SCHEDULE  
SERVICE  
WHEN  
Check crankcase oil level_______________________________________________________before each use  
Check air intake screen__________________________________________________________after each use  
Clean grass from under deck _____________________________________________________after each use  
Check tire pressure ____________________________________________________________every 10 hours  
Sharpen mower blades _________________________________________________________every 10 hours  
Clean air filter element ___________________________________________________________every 8 hours  
Check 20W50 motor oil  
in hydrostatic system ___________________________________________________________every 10 hours  
Check drive belts ______________________________________________________________every 50 hours  
(20 hr break-in)  
Grease blade spindles __________________________________________________________every 50 hours  
Grease front wheels ____________________________________________________________every 50 hours  
Grease caster wheel pivots ______________________________________________________every 50 hours  
Grease pusher bar pivots________________________________________________________every 50 hours  
Change engine  
every 50 hours  
crankcase oil and filter ________________________________________________________(5 hrs break-in)  
Change hydrostatic oil filter (See your Bush Hog Dealer)  
Important: Substitution of an improper filter will cause  
every 500 hours  
hydrostatic failure which will not be covered under warranty_____________________(50 hrs break-in)  
Replace air  
filter element ____________________________________________________________annually or 500 hours  
Check spark plugs________________________________________________________annually or 100 hours  
Service battery___________________________________________________________annually or 500 hours  
Perform these maintenance procedures more frequently under extremely dusty, dirty conditions.  
Replace decals when illegible. Write parts dept. for free replacement.  
WARNING: Make sure seat frame retention click-pins are in place after lifting seat pan for service.  
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4. TIRES:  
Correct tire pressure is essential for efficient  
1. ENGINE:  
For complete maintenance and operating infor-  
operation of the mower. Check tire air pres-  
sure periodically. Inflate front and rear tires to 15 psi.  
mation for your engine, please refer to your  
engine operating and maintenance instructions  
furnished by the engine manufacturer and  
included in your Zero Turn mower information packet.  
Lug bolts should be checked regularly for tight-  
ness. Torque lug bolts to 50 ft./lbs. The center  
hub nut should be torqued to 175 - 200 ft./lbs.  
and cotter key installed.  
NOTE  
Air intake screen must be kept clean. If  
plugged, engine may be seriously dam-  
aged by over heating.  
5. MOWER BLADES:  
2. TACHOMETER / HOURMETER  
Check sharpness of mower blades after every 10  
hours of operation. To sharpen blades proceed as  
follows:  
The tachometer / hourmeter includes a  
FlashAlert feature to remind you to change  
engine oil and filter at recommended inter-  
vals. The tachometer displays engine rpm  
when the engine is running and elapsed time  
in hours when the engine is turned off.  
WARNING  
WHEN IT IS NECESSARY TO RAISE THE DECK  
OR MOWER FOR SERVICE OR MAINTENANCE,  
TO AVOID SERIOUS INJURY OR DEATH, STOP  
ENGINE, SET PARKING BRAKE, REMOVE IGNI-  
TION KEY AND SPARK PLUG WIRES AND  
SECURELY SUPPORT THE DECK OR MOWER  
BEFORE WORKING UNDERNEATH.  
Oil Change Flash Alert - Break-in interval at 5  
hours with 1 hour before and after flash. Normal  
interval at 50 hours with 2 hour before and  
after flash.  
3. BATTERY:  
A. Lift deck and secure in raised position.  
B. Remove bolt, cup washer, and blade from shaft.  
C Blades should be discarded when worn exces-  
sively. See sketch.  
When taking the battery out of the mower for  
servicing, make sure to reconnect the cables to  
the battery exactly as they were prior to removal.  
New Blade  
Keep the battery clean. Remove the corrosion  
around the battery terminals by applying a solu-  
tion of one part baking soda to four parts water.  
Coat all exposed terminal surfaces with a light  
layer of grease or petroleum jelly to prevent corrosion.  
Dangerous!  
When Notch Starts  
25 Degrees  
D. Sharpen blade with a hand file, electric grinder  
or blade sharpener. Wear gloves and eye protection  
when sharpening. Grind blade at original bevel.  
E. Check balance of blade by positioning the blade  
on a nail or blade balance pedestal. Grind the blade  
on the end that is heavier until both sides balance.  
F. Install blades with the concave side of the cup  
washer against blade. Be sure blades are installed  
with uplifts and cutting edges in the proper directions.  
Tighten retaining bolt to 76 ft./lbs.  
NOTE  
At temperatures below 32 degrees F (0 deg  
C) the full charge state must be maintained to  
prevent cell electrolyte from freezing and  
causing permanent battery damage.  
WARNING  
WARNING  
AVOID SERIOUS INJURY OR DEATH:  
THE BATTERY CONTAINS SULFURIC ACID.  
AVOID CONTACT WITH SKIN, EYES OR CLOTHING.  
EYES - FLUSH WITH WATER AND GET PROMPT MED-  
ICAL ATTENTION.  
WHEN IT IS NECESSARY TO RAISE THE DECK  
OR MOWER FOR SERVICE OR MAINTENANCE,  
TO AVOID SERIOUS INJURY OR DEATH, STOP  
ENGINE, SET PARKING BRAKE, REMOVE IGNI-  
TION KEY AND SPARK PLUG WIRES AND  
SECURELY SUPPORT THE DECK OR MOWER  
BEFORE WORKING UNDERNEATH.  
ANTIDOTE: INTERNAL - DRINK LARGE QUANTITIES  
OF WATER OR MILK. FOLLOW WITH MILK OF MAG-  
NESIA, BEATEN EGG OR VEGETABLE OIL. CALL A  
PHYSICIAN IMMEDIATELY.  
BATTERIES PRODUCE EXPLOSIVE GASES.  
KEEP SPARKS, FLAMES AND SMOKING MATERI-  
ALS AWAY. VENTILATE WHEN CHARGING IN AN  
ENCLOSED SPACE. WEAR EYE PROTECTION  
WHEN WORKING NEAR BATTERIES.  
6. CLEANING GRASS BUILD UP UNDER DECK  
Depress the deck lift foot pedal and lock in position,  
then move the height adjustment pin to the 5”  
position.  
KEEP OUT OF REACH OF CHILDREN.  
Lift the front of the unit and support unit securely.  
Clean out any grass build up from underside of deck  
and in deck discharge chute.  
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MOTION CONTROL LEVER ADJUSTMENT  
6. Re-tighten the nuts at the end of the hex  
turnbuckles and repeat the procedure for  
the opposite side of the unit.  
1. There are three lever height positions available.  
Place the levers in the position that provides the  
most confortable operating position for you.  
7. Shut the unit off. Remove the jumper wire from  
the wiring harness and replace the connectors  
into the seat switch. Never operate the mower  
unless all safety switches are operating properly.  
2. Align the levers front/rear position. With the  
levers in the neutral position, loosen the hard-  
ware and adjust the levers by tilting forward or  
backward until properly aligned. tighten hardware.  
DRIVE ADJUSTMENTS  
Steering and motion controls should be uniform in all  
forward and reverse speeds. From the reverse posi-  
tion the levers should automatically return to neutral  
when released.  
CAUTION  
STOP THE ENGINE BEFORE MAKING  
ADJUSTMENTS.  
TEST DRIVE OPERATIONS  
Check air pressure in tires. Equal tire pressure is  
critical for proper drive operation.  
1. Raise drive wheels off ground. Safely block  
the frame in this position.  
2. Put control levers in neutral lock position  
(control levers swung outward).  
3. Start engine. Wheels should not rotate. If one or  
both drive wheels are turning, perform proce-  
dures under “Motion Controll Adjustment” for  
side(s) that wheel turns.  
Lever Position Adjustment Bolts  
MOTION CONTROL STEERING ADJUSTMENT  
1. Raise the drive wheels of the Zero Turn  
off of the ground. Safely block the frame  
in this position so it is secure. This  
adjustment must be made with the drive  
wheels turning.  
Control Arm  
2. Remove the electrical connection from  
the seat switch and temporarily install a  
jumper wire across the terminals of the  
wiring harness.  
Hex Turnbuckle  
3. Loosen the jamnuts on the hex turnbuckle,  
which connects the lever control arm to  
the pump control arm. Note: the nuts to  
the front of the hex turnbuckle have left-  
handed threads.  
4. Start the engine. Run the engine at full  
throttle and release brake.  
Jamnut  
5. Position the control levers in the neutral  
position. If the drive wheels creep  
(rotate) in the neutral position then  
lengthen or shorten the turnbuckle  
assembly. Make the adjustment to stop  
the wheel from rotating.  
Control Arm Lever  
Pump  
Control Arm  
17  
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LEVELING THE DECK  
DECK BELT ADJUSTMENT  
CAUTION  
Belt adjustment should be checked every 50 hours  
to get maximum life and cutting performance from  
the mower. Belt tension is adjusted by increasing or  
decreasing the length of the spring on the movable  
idler. For proper belt tension on the 49”, 55” and 61”  
mowers, the spring length should be set to 7-1/2”  
inside hook to inside hook with the deck in 3” cutting  
height position. To adjust the spring length, loosen  
or tighten the 3/8” hex nuts on the eye bolt until the  
correct spring length is reached.  
STOP THE ENGINE, SET PARKING BRAKE,  
REMOVE IGNITION KEY AND SPARK PLUG  
WIRES FOR SAFETY.  
Height  
Adjustment Pin  
Upper  
Chain Fastener  
DECK BELT REPLACEMENT  
USE ONLY GENUINE BUSH HOG REPLACEMENT PARTS  
Deck Lift Pedal  
A. Remove the deck shield assembly.  
B. Relieve the spring tension by loosening the two  
3/8” hex nuts on the eye bolt.  
C. Remove old belt.  
D. Install new belt. Be sure that the belt is properly  
positioned in all sheave grooves.  
E. Adjust tension on the belt by adjusting the length of  
the spring on the moveable idler. The correct spring  
length is 7-1/2” for the 49”, 55” and 61” decks.  
F. Replace the deck shield assembly.  
Deck  
Deck Lift Spring  
Adjustment Nut  
Anti-Scalp Roller  
1. Set all tire pressures to the correct specifications.  
2. Place machine on a level slab of concrete.  
DECK SPINDLE BELT ROUTING DIAGRAM  
Front Of Deck  
3. Depress the deck lift pedal raising the deck to  
the full lift height position and move the height  
adjustment pin to the 5” position.  
4. Place a level on the deck, from front to rear. If  
the level is too short to reach all the way from  
front to rear, lay a straight edge on the deck first,  
then place the level on the straight edge.  
(Measure from inside of  
hook to inside of hook)  
5. Lay a .125” spacer beneath the front of the level.  
6. Adjustment may be made by loosening the  
upper chain fasteners and moving the fasteners  
in the provided slot. Adjust fasteners until the lev-  
el’s bubble is centered. Repeat for the other side.  
Spring Loaded  
Idler Assembly  
Engine/Clutch Pulley  
COUNTERBALANCE SPRING  
Raise the cutter deck to the transport position.  
Adjust the spring with the nut to the follwing lengths:  
49” Deck - Spring Length of 14-1/2”  
55” Deck - Spring Length of 15”  
61” Deck - Spring Length of 14-1/2”  
WARNING  
TO AVOID SERIOUS BURN INJURIES:  
ALLOW ENGINE, OIL AND HYDRAULIC FLU-  
IDS TO COOL BEFORE SERVICING TRANSMIS-  
SION OR ENGINE SYSTEM  
The springs may be tightened or loosened from this  
point according to personal preference. (Measure  
from inside of hook to inside of hook)  
CAUTION  
TO AVOID CLEANING SOLVENT FIRES:  
AVOID USING FLAMMABLE SOLVENTS.  
AVOID AREAS WITH IGNITION SOURCES  
WHEN USING FLAMMABLE SOLVENTS.  
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open the bypass valve. Slowly move the steering  
levers in both the forward and reverse directions to  
purge the air from the closed circuit.  
WARNING  
HIGH PRESSURE HYDRAULIC FLUID LEAKS  
CAN PENETRATE SKIN CAUSING SERIOUS  
INJURY AND GANGRENE.  
INJECTED FLUID MUST BE SURGICALLY  
REMOVED WITHIN A FEW HOURS BY A DOC-  
TOR FAMILIAR WITH THIS TYPE OF INJURY.  
Close the bypass valve and run the unit in both direc-  
tions for several minutes until any remaining air is  
purged from the unit. Refill the reservoir as necessary.  
TO AVOID SERIOUS INJURY FROM  
PRESSURE LEAKS:  
USE CARDBOARD AND NOT HANDS TO  
SEARCH FOR LEAKS.  
Stop the engine, check for and correct any fluid leaks,  
and check the reservoir level. Add fluid if necessary.  
The transmission is now ready for operation.  
RELIEVE HYDRAULIC PRESSURE BEFORE  
WORKING ON SYSTEM.  
HYDROSTATIC MAINTENANCE  
CHECK HYDRAULIC HOSES, LINES, AND  
CONNECTIONS FOR TIGHTNESS AND  
GOOD CONDITION BEFORE APPLYING  
SYSTEM PRESSURE.  
Check the reservoir daily for proper fluid level. Oil  
level should be to the bottom of the slot on the reser-  
voir baffle.  
The pump and motor units normally do not require  
regular fluid changes. The system filter should be  
changed after the first 50 hours of break-in, then  
every 250 hours thereafter. The fluid and filter should  
be changed and the system cleaned if the fluid  
becomes contaminated with foreign matter (water,  
dirt, etc.).  
START-UP MAINTENANCE  
HYDROSTATIC FLUID  
Bush Hog recommends the use of 20W50 motor oil  
in the hydrostatic reservoir.  
START-UP PROCEDURE  
WARNING  
PARKING BRAKE ADJUSTMENT  
TO AVOID INJURY FROM EQUIPMENT GROUND  
TRAVEL AND MOVEMENT DURING  
START-UP PROCEDURE:  
Check to make sure brake is adjusted properly.  
DO NOT START OR JOG ENGINE UNTIL:  
Force on the brake handle to lock the brake in place  
should be 30 pounds. To adjust the brake tension,  
shorten or lengthen the horizontal brake linkage.  
PUMP IS IN NEUTRAL POSITION  
DRIVE WHEELS ARE RAISED OFF THE  
GROUND.  
EQUIPMENT IS SECURELY BLOCKED-UP TO  
KEEP WHEELS FROM GROUND CONTACT.  
PTO AND OTHER WORK FUNCTIONS ARE  
DISCONNECTED.  
If further adjustment is needed at each individual  
wheel brake:  
KEEP HANDS, HAIR AND CLOTHING AWAY  
FROM ROTATING BLADES.  
1. Engage the brake lever (lever up).  
2. Remove the wheel from the side needing adjusting.  
The following start-up procedure should always be  
followed when starting a new installation or when  
restarting and installation in which the pump or  
motor has been removed from the system.  
3. With the brake engaged the spring length should  
be 3-1/2” (measured to the inside of the spring loops).  
4. If the spring length is different, shorten or lengthen  
the vertical brake linkage.  
Prior to starting the pump, make certain all system  
components (reservoir, fittings, etc.) are clean prior  
to filling with fluid.  
5. Reinstall the wheel and torque the lug nuts.  
Pump Drive Belt Tension Adjustment  
1. Stop engine and remove key.  
Fill the reservoir with recommended fluid which  
should be filtered prior to entering the reservoir.  
Start the engine and idle at the lowest possible RPM.  
With the bypass valve closed, slowly move the dis-  
placement control in both the forward and reverse  
directions. As air is purged from the unit, the oil level  
in the reservoir will drop and bubbles may appear in  
the fluid. Refill the reservoir as necessary.  
2. The pump drive belt tension is adjusted through a  
spring loaded idler pulley.  
3. Adjust the eye bolt so the spring length is 6” (mea-  
sured to the inside of the spring loops).  
Place the steering levers in the neutral position and  
19  
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TROUBLESHOOTING CHECK LIST  
1. ENGINE IDLES POORLY:  
Carburetor maladjustment_________________________________________________readjust carburetor  
Improper spark plug gap _______________________________________________check and re-gap plug  
2. ENGINE BACKFIRES:  
Carburetor maladjustment_________________________________________________readjust carburetor  
3. ENGINE RUNS BUT POWER UNIT WON’T MOVE FORWARD  
Drive belt loose or broken________________________________________________re-tension or replace  
Pump shift arm disconnected _____________________________________________________reconnect  
Hydrostatic reservoir oil low _________________________________________________________add oil  
Pump bypass valve open________________________________________________put in closed position  
Hydrostatic oil filter plugged_____________________________________________________replace filter  
Bad pump or motor __________________________________________________________consult dealer  
4. POWER UNIT LOSES POWER OR HYDROSTAT SYSTEM OVERHEATS  
Hydrostatic oil reservoir too low ______________________________________________________add oil  
Pump or motor damaged _____________________________________________________consult dealer  
Hydrostatic oil reservoir blowing oil out cap _________________________overfilled or water contaminated  
5. ENGINE STALLS WHEN BLADES ARE ENGAGED  
Operator not on seat ____________________________________________________________sit on seat  
Faulty interlock system _______________________________________________________consult dealer  
Bad blade spindle bearing_____________________________________________________consult dealer  
Deck drive belt not properly routed ___________________________________________________reroute  
Blades blocked by foreign material ___________________________________________clean under deck  
•See engine manual for engine adjustments  
ENGINE ELECTRICAL TROUBLE  
POOR CUTTING PERFORMANCE  
1. ENGINE WILL NOT TURN OVER:  
Dead battery  
ENGINE SPEED IS TOO SLOW:  
*
Always mow at full throttle.  
Bad ground connection  
Bad terminal connection at battery  
Wiring harness plugs are not attached properly at  
the key switch or the PTO switch  
Bad parking brake switch  
BELT SLIPPAGE:  
*
Tighten deck adjusting spring to 7-1/2”.  
DECK IS PLUGGED WITH GRASS:  
*
Clean underneath the mower.  
Bad PTO switch  
BLADES ARE NOT SHARP:  
2. ENGINE WILL TURN OVER,  
BUT WILL NOT START:  
*
Sharpen the blades or replace.  
A. If there is spark at the plug:  
No fuel  
CUTTING HEIGHT:  
*
Bad fuel solenoid in engine  
Normal mowing - cut only 1/3 of the grass blade.  
B. If there is no spark at the plug:  
Make sure safety interlock system is sequenced:  
PTO switch is off  
FINISHED CUT IS UNEVEN:  
*
Groundspeed is too fast.  
Control levers in neutral position  
Parking brake is on  
Operator in seat  
BLADES ARE WORN DOWN TOO FAR:  
*
Replace your blades.  
Check safety interlock switches:  
Seat switch  
Neutral switch  
Bad ignition module on engine  
20  
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SECTION IV  
ASSEMBLY  
MOUNTING THE CONTROL LEVERS  
Mount the control levers to the 3/4’ x 3/4” square  
bars positioning the control levers to the preferred  
height and mount with 3/8” x 1” fasteners, lock  
washers, and flat washers. Move the control levers  
forward or rearward for operator comfort.  
Control Lever  
ROPS  
MOUNTING THE SEAT  
Mount either the suspension seat or the non-sus-  
pension seat by aligning the four 5/16” studs with  
the mounting holes on the seat frame. Remove the  
fasteners from the operator’s manual package and  
secure the seat with the 5/16” flange locknuts.  
Attach the seat safety wires to the seat switch.  
ROPS  
Park Brake Lever  
Mount the ROPS frame to the formed channels with  
the 1/2” x 4-1/4” fasteners and locknuts. NOTE: If  
mounting a canopy position the upper structure to  
fold to the front. If a canopy will not be mounted  
position the upper structure to fold toward the rear.  
Suspension Seat  
5/16” Mounting Stud  
w/Locknuts  
Seat  
Frame  
MOUNTING DISCHARGE CHUTE  
Align mounting holes on the discharge chute with  
mounts on the deck weldment. Insert discharge  
chute pin along with 3/8” flatwasher and 1/8” x 1”  
cotter pin.  
Seat  
Stop  
BATTERY  
Attach the positive lead to the battery.  
Additional wire tie straps are shipped to secure the  
wiring harness as needed.  
ITEMS TO CHECK:  
Check oil level in the engine (see engine manual)  
Check the fluid level in the hydrostatic oil reservoir.  
Seat Safety Wires  
Seat Belt  
Check tightness of all fasteners, including bolts, lug  
nuts, and setscrews.  
Check tire pressure.  
Discharge Chute  
21  
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22  
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23  
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SAFETY DECALS  
To promote safe operation, Bush Hog supplies safety decals on all products manufactured. Because damage  
can occur to safety decals either through shipment, use or reconditioning, Bush Hog will, upon request, provide  
safety decals for any of our products in the field at no charge. Contact your authorized Bush Hog dealer for  
more information.  
DANGER  
KEEP AWAY!  
SHIELD MISSING FROM THIS AREA  
TO AVOID SERIOUS INJURY OR DEATH,  
DO NOT OPERATE WITHOUT THIS AND  
ALL OTHER SHIELDS IN PLACE AND IN  
50012616  
GOOD CONDITION.  
WARNING  
ROTATING DRIVE PARTS  
BENEATH  
• ENTANGLEMENT WITH ROTATING DRIVE  
PARTS CAN CAUSE INJURY OR DEATH.  
• DO NOT OPERATE WITHOUT THIS AND  
ALL OTHER SHIELDS IN PLACE AND IN  
GOOD CONDITION.  
50012615  
SERIOUS INJURY  
OR DEATH MAY  
RESULT FROM  
MACHINE ROLLOVER  
Failure to follow these  
instructions could result  
in serious injury or death.  
Do not operate machine on  
steep slopes or near drop offs.  
Avoid sharp and/or quick turns.  
Do not exceed the machine  
weight rating of the rops.  
Always use seat belt.  
Do not jump if machine tips.  
If ROPS is foldable  
Always keep the ROPS fully extended.  
°
WHEN ROPS MUST BE DOWN-  
°
Do not use seat belt.  
°
Drive with extra care.  
°
If equipped with seat platform,  
Do not operate machine without  
seat platform pins in place.  
50048632  
24  
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WARNING  
TO AVOID SERIOUS INJURY OR DEATH  
DO NOT OPERATE MOWER WITHOUT DISCHARGE  
SHIELD OR DEFLECTOR IN PLACE AND GOOD REPAIR.  
83056  
WARNING  
TO AVOID SERIOUS INJURY OR DEATH,  
READ OPERATOR’S MANUAL BEFORE  
OPERATING & FOLLOW ALL PRECAUTIONS.  
(CONTACT DEALER FOR MANUALS)  
KEEP SHIELDS AND GUARDS IN PLACE.  
KEEP CLEAR OF DRIVES AND BELTS.  
SECURELY SUPPORT MOWER &  
REMOVE KEY BEFORE WORKING  
UNDERNEATH.  
LOWER IMPLEMENT, STOP ENGINE AND  
REMOVE KEY BEFORE DISMOUNTING.  
NO RIDERS. DO NOT OPERATE MOWER IN  
VICINITY OF OTHER PERSONS.  
KNOW HOW TO STOP TRACTOR AND  
EQUIPMENT QUICKLY IN AN  
EMERGENCY.  
ALLOW NO CHILDREN OR UNQUALIFIED  
PERSONS TO OPERATE EQUIPMENT.  
BE CAREFUL ON UNEVEN TERRAIN.  
DECREASE SPEED WHEN TURNING.  
94134  
CLEAR MOWING AREA OF DEBRIS.  
25  
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TORQUE SPECIFICATIONS  
Proper toque for American fasteners used on Bush Hog equipment.  
Recommended Torque in Foot Pounds (Newton Meters).*  
AMERICAN  
BOLT DIAMETER  
(IN.) “B” AND  
THREAD SIZE  
Bolt Head Markings  
WRENCH  
SAE  
GRADE 2  
SAE  
GRADE 5  
SAE  
SIZE (IN.) “A”  
GRADE 8  
7/16  
7/16  
1/4 - 2O UNC  
1/4 - 28 UNF  
5/16 - 18 UNC  
5/16 - 24 UNF  
3/8 - 16 UNC  
3/8 - 24 UNF  
7/16 - 14 UNC  
7/16 - 20 UNF  
1/2 - 13 UNC  
1/2 - 20 UNF  
9/16 - 12 UNC  
9/16 - 18 UNF  
5/8 - 11 UNC  
5/8 - 18 UNF  
3/4 - 10 UNC  
3/4 - 16 UNF  
7/8 - 9 UNC  
6 (7)  
8 (11)  
10 (13)  
12 (16)  
14 (18)  
6 (8)  
1/2  
11 (15)  
17 (23)  
25 (33)  
SAE Grade 2  
(No Dashes)  
1/2  
13 (17)  
19 (26)  
27 (37)  
9/16  
20 (27)  
31 (42)  
44 (60)  
9/16  
23 (31)  
35 (47)  
49 (66)  
5/8  
32 (43)  
49 (66)  
70 (95)  
5/8  
36 (49)  
55 (75)  
78 (106)  
3/4  
49 (66)  
76 (103)  
106 (144)  
120 (163)  
153 (207)  
172 (233)  
212 (287)  
240 (325)  
376 (509)  
420 (569)  
606 (821)  
668 (905)  
909 (1232)  
995 (1348)  
1019 (1381)  
1288(1745)  
1444 (1957)  
1817 (2462)  
2013 (2728)  
2382 (3228)  
2712 (3675)  
3161 (4283)  
3557 (4820)  
3/4  
55 (75)  
85 (115)  
7/8  
70 (95)  
109 (148)  
122 (165)  
150 (203)  
170 (230)  
266 (360)  
297 (402)  
430 (583)  
474 (642)  
644 (873)  
705 (955)  
721 (977)  
795 (1077)  
890 (1206)  
1120 (1518)  
1241 (1682)  
1470 (1992)  
1672 (2266)  
1950 (2642)  
2194 (2973)  
7/8  
79 (107)  
97 (131)  
110 (149)  
144 (195)  
192 (260)  
166 (225)  
184 (249)  
250 (339)  
274 (371)  
280 (379)  
354 (480)  
397 (538)  
500 (678)  
553 (749)  
655 (887)  
746 (1011)  
870 (1179)  
979 (1327)  
SAE Grade 5  
(3 Dashes)  
15/16  
15/16  
1-1/8  
1-1/8  
1-5/16  
1-5/16  
1-1/2  
1-1/2  
1-1/2  
1-11/16  
1-11/16  
1-7/8  
1-7/8  
2-1/16  
2-1/16  
2-1/4  
2-1/4  
7/8 - 14 UNF  
1 - 8 UNC  
1 - 12 UNF  
Wrench  
Size “A”  
SAE Grade 8  
(6 Dashes)  
1 - 14 UNF  
1-1/8 - 7 UNC  
1-1/8 - 12 UNF  
1-1/4 - 7 UNC  
1-1/4 - 12 UNF  
1-3/8 - 6 UNC  
1-3/8 - 12 UNF  
1-1/2 - 6 UNC  
1-1/2 - 12 UNF  
Proper torque for metric fasteners used on Bush Hog equipment.  
Recommended torque in foot pounds (newton Meters).*  
METRIC  
WRENCH  
SIZE  
BOLT  
DIA.  
(mm) “B”  
ASTM  
4.6  
ASTM  
8.8  
ASTM  
9.8  
ASTM  
10.9  
(mm) “A”  
8
5
1.8 (2.4)  
3 (4)  
5.1 (6.9)  
8.7 (12)  
21.1 (29)  
42 (57)  
6.5 (8.8)  
11.1 (15)  
27 (37)  
10  
13  
16  
18  
21  
24  
30  
33  
36  
41  
46  
6
8
7.3 (10)  
14.5 (20)  
25 (34)  
40 (54)  
62 (84)  
122 (165)  
Wrench  
Size “A”  
10  
12  
14  
16  
20  
22  
24  
27  
30  
53 (72)  
8.8  
74 (100)  
118 (160)  
167 (226)  
325 (440)  
443 (600)  
563 (763)  
821 (1112)  
1119 (1516)  
73 (99)  
93 (126)  
116 (157)  
181 (245)  
148 (201)  
230 (312)  
449 (608)  
611 (828)  
778 (1054)  
1138 (1542)  
1547 (2096)  
Numbers appearing on bolt heads  
indicate ASTM class.  
*Use 75% of the specified torque value for plated  
fasteners. Use 85% of the specificed torque  
values for lubricated fasteners.  
211 (286)  
418 (566)  
26  
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PROFESSIONAL SERIES  
ZERO TURN RIDING MOWERS  
Optional Equipment:  
Caster Bundle (Available for 61” deck only)  
Canopy Kit  
Light Kit  
Rear Hitch Kit  
Mulching Kit 49”  
Mulching Kit 55”  
Mulching Kit 61”  
Striping Kit  
Grass Catcher 49”, 55” & 61”  
27  
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SLOPE ANGLE GUIDE  
ALIGN THIS EDGE WITH A VERTICAL SURFACE  
(TREE. BUILDING, FENCE POST. POLE, ETC.)  
28  
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P.O. Box 1039  
l
Selma, AL 36702-1039  
Telephone (334) 874-2700  
l
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