®
BUSH HOG
Home Series
Zero Turn Mower
Operator’s Manual
l
l
ASSEMBLY OPERATION MAINTENANCE
807
$4.00
50055752
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HOME 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
Parking Brake Cable Replacement . . . .20
Troubleshooting . . . . . . . . . . . . . . . . . . .21
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 . . . . . . . . . . . . . . . . . . . . . .22
Wiring Schematics . . . . . . . . . . . . . . . . .23
Safety Decals . . . . . . . . . . . . . . . . . . . . .25
Torque Specifications . . . . . . . . . . . . . . .27
Optional Equipment List . . . . . . . . . . . . .28
III MAINTENANCE . . . . . . . . . . . . . . . . . . . 15
Maintenance Schedule. . . . . . . . . . . . . . 15
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Slope Angle Guide . . . . . . . . . . . . . . . . .29
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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HOME SERIES 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
MODEL NUMBER
dealer if parts or service are required.
SERIAL NUMBER
MAKE CERTAIN THE WARRANTY REGISTRATION
DATE OF RETAIL SALE
CARD HAS BEEN FILED WITH BUSH HOG/
SELMA, ALABAMA
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DEALER PREPARATION CHECK LIST
HOME SERIES ZERO TURN RIDING MOWER
BEFORE DELIVERING MACHINE — The following check list should be completed.
Use the Operator’s Manual as a guide.
r 1. Engine has been serviced.
r 2. Battery fluid level is checked.
r 3. Low oil pressure light checked for operation.
r 4. Operator interlock switches checked for operation.
r 5. Assembly completed.
r 6. All fittings lubricated.
r 7. ZT transaxle filled with oil to appropriate level.
r 8. All shields in place and in good condition.
r
9. Roll-overProtectiveStructure(Optional)isinstalledandretractableseatbeltfunctionsproperly.
r 10. All fasteners torqued to specifications given in Torque Chart.
r 11. All decals in place and readable. (See decal page.)
r 12. Overall condition good (i.e. paint, welds)
r 13. Parking brake checked and adjusted, if necessary.
r 14. Steering checked and adjusted, if necessary.
r 15. Check tire pressure.
r 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
Zone
WHAT CAN HAPPEN
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.
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.
Water
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
a smooth, even cut is desired and superior maneu-
INTRODUCTION
verability is needed. The tractor unit consists of either
a 17.5 hp Briggs & Stratton single, 18 hp Briggs &
Stratton twin, or 20 hp Kohler twin cylinder engine.
The engines have a pressurized oil lubrication system
with spin-on type filter, fused electronic ignition, electric
start and an 8 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 transaxles are used for propelling
and steering. The pumps are belt driven by the
engine output shaft. One lever for each drive con-
trols both speed and direction. This independent
control of each drive wheel coupled with continuous-
ly variable speed selection gives the Zero Turn
mower exceptional maneuverability.
NOTE:
All references made to right, left, front, rear, top or
bottom is as viewed facing the direction of forward
travel.
The mower attachment is available in 36” or 42” cut-
ting widths. The mower has two cutting blades, dri-
ven by an electromagnetic clutch through a single v-
belt.
DESCRIPTION
The Zero Turn riding mower is intended for use on
lawns and other frequently maintained areas where
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CONTROL LOCATIONS
CONTROLS
1
2
3
Ignition Key -Starts and stops engine.
Engine Throttle - Controls engine speed.
OPERATOR INTERLOCK SYSTEM
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.
Two Steering/Speed Control Levers - In front of
seat at side.
4
5
6
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 22)
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.
7
8
9
Choke - Aids in starting engine.
Light Switch (Optional)
c. The parking brake is off.
d. All of the above.
Hour Meter / Tachometer (Optional)
2. The park brake is on before the control levers
are swung out.
10 Warning Light for oil pressure.
DO NOT OPERATE MOWER IF SAFETY SWITCH-
ES ARE NOT OPERATING PROPERLY.
3
9
10
WARNING
1
DO NOT OPERATE MACHINE UNLESS
INTERLOCK SYSTEM FUNCTIONS PROP-
ERLY. FAILURE TO HEED THIS WARNING
MAY RESULT IN SERIOUS INJURY, DEATH
OR EQUIPMENT DAMAGE.
4
TRACTOR SPECIFICATIONS
Tread Width - (Outside Tires) . . . . . . . . . . . . . . . . . . . 40”
Height - To top of seat back . . . . . . . . . . . . . . . . . . . . 45”
2
8
7
Fuel Capacity (In Twin Tanks) . . . . . . . . . . . . . . 8 gallons
DECK SPECIFICATIONS
Hydrostatic Transaxles - All Models . . . . (2) Hydro- Gear
EZT
ITEM
Cutting width
Cutting Height ------ 1-1/2” to 4-1/2” in 1/4” increments
36”
42”
Engines - 17.5 hp Briggs & Stratton Intek
18 hp Briggs & Stratton Intek
20 hp Kohler Courage Twin
Blades
18 1/8”
21 1/8”
Overall width
with chute down
Material thickness - Deck -------------11 GA.-----------------
Tires - All Models - Front . . . . . . . . . . . . . . . . 11 x 4.0 - 5
Drive. . . . . . . . . . . . . . . . . 18 x 8.5 - 8
46”
52”
Spindle bearings ----------------------25 mm------------------
10
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SECTION II
OPERATION
7. Check battery fluid level.
GENERAL SAFETY
8. Inspect V-belts
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 & 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 parking brake operation by disengaging
hydrostatic transaxles (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
15. Seat Adjustments:
AVOID SERIOUS INJURY OR DEATH:
GASOLINE IS EXTREMELY FLAMMABLE AND
EXPLOSIVE UNDER CERTAIN CONDITIONS.
l REFUEL IN A WELL VENTILATED AREA WITH
ENGINE STOPPED.
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.
l
DO NOT SMOKE OR ALLOW FLAMES OR
SPARKS IN THE REFUELING AREA OR
WHERE GASOLINE IS BEING STORED.
l
NOT OVERFILL FUEL TANK. AFTER
DO
REFUELING, MAKE CERTAIN THE TANK CAP
IS CLOSED PROPERLY AND SECURELY.
l 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.
l 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.
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.
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.)
WARNING
ENGINE EXHAUST GASES CONTAIN
POISONOUS CARBON MONOXIDE.
NEVER RUN ENGINE IN A CLOSED BUILDING
OR CONFINED AREA.
l AVOID INHALING EXHAUST GASES.
l
6. Check the hydrostatic transaxle oil level. (See
“Maintenance” section of this manual.)
11
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OPERATION
WARNING
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.
1. OPEN FUEL TANK SELECTOR VALVE left or
right tank.
2. MOVE CONTROL LEVERS TO neutral “OUT”
position by pushing each one straight sideways.
3. SET PARKING BRAKE. Pull rearward to set.
4. DISENGAGE MOWER BLADE CLUTCH by
moving clutch switch to “OFF” (down) position.
11. 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.
5. SET ENGINE CHOKE CONTROL for cold starts
to full position.
6. SET ENGINE THROTTLE TO 1/2 throttle.
12. 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.
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. Lower the deck to the selected mowing height.
6. To transport, depress the lift foot pedal, then
move the height adjustment pin to the 4-1/2” 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.
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.
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.
CUTTING HEIGHT ADJUSTMENT DECAL
10. 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
Control Lever forward, depending on which
direction you wish to turn.
12
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ANTI-SCALP ROLLER (42” Deck Only)
WARNING
1. Stop engine and move the control levers to the
neutral position and engage the parking brake.
2. Disengage the blades.
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.
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.
13. 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.
14. TO STOP:
A. Slow engine speed with throttle to slowest
position.
TRANSPORTING
IMPORTANT- When transporting the Home
Series ZT in a truck bed or on a trailer, secure-
ly fasten the ZT to the bed with straps or other
suitable bindings. This will prevent movement
of the ZT which may cause undue wear and
damage to the parking brake system.
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.
ANTI-SCALP ROLLER
Position Adjustment Holes
Anti-Scalp Roller
13
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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
15. HYDRAULIC COMPONENTS BYPASS-TO
MOVE THE TRACTOR WITHOUT POWER: The
bypass levers are located on the rear of the
engine plate. NOTE: Exhaust muffler can be
extremely hot. Use extreme caution when
engaging or disengaging bypass levers to
prevent severe burns. Pull both the RH & LH
levers to the rear and lock out in the keyway
slot to disengage for freewheeling. Reverse
this procedure for operation.
TO AVOID SERIOUS INJURY FROM BLADE
CONTACT, POWER MUST BE OFF TO
CLEAN DISCHARGE CHUTE
DANGER
KEEP HANDS AND FEET AWAY FROM
UNDERNEATH MOWER TO AVOID SERI-
OUS INJURY OR DEATH.
WARNING
ROTARY MOWERS CAN DISCHARGE
OBJECTS AT HIGH SPEEDS. TO AVOID
SERIOUS INJURIES OR DEATH:
l OPERATE ONLY WITH SIDE BANDS IN
GOOD REPAIR AND CHUTE OR GRASS
CATCHER ATTACHMENT INSTALLED.
l
KEEP
CHILDREN,
PETS,
AND
BYSTANDERS AWAY FROM THE WORK
AREA.
DO NOT OPERATE MOWER IN THE
VICINITY OF OTHER PERSONS.
DISCHARGE AWAY FROM BUILDINGS,
WALLS OR OTHER STRUCTURES.
l
l
Engine Oil
Drain Plug
Left Hand Bypass Lever
Rear Bumper
Fuel Shut-Off Handle
NOTE: To move the tractor without power, the pumps
must be unlocked and in the free wheel position.
Failure to do so could possibly damage the hydraulic
components. Never pull at more than 2 MPH.
16. FUEL SHUT-OFF VALVE: Located on the front
panel below the operator is the fuel directional
valve. This valve has three positions for opera-
tions and each position is made in 1/4 turn incre-
ments. This directional valve has a shut off posi-
tion and can be used when the machine will not
be used for a few days or when the unit is trans-
ported to and from a work site.
Fuel Flow
Off
Valve Position
Down
Right Tank
Right
Left Tank
Left
14
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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 50 hours
Check drive belts ______________________________________________________________every 50 hours
(20 hr break-in)
Grease front wheels ____________________________________________________________every 50 hours
Change engine
every 50 hours
crankcase oil and filter ________________________________________________________ (5 hrs break-in)
Change hydrostatic oil _________________________________________________________every 250 hours
Replace air
filter element _______________________________________________________________________annually
Check spark plugs __________________________________________________________________annually
Service battery _____________________________________________________________________annually
Perform these maintenance procedures more frequently under extremely dusty, dirty conditions.
Replace decals when illegible. Write parts dept. for free replacement.
WARNING: If your mower is equipped with optional ROPS, make sure seat frame retention click-pins
are in place after lifting seat pan for service.
15
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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 15psi.
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
tightness. Torque lug bolts to 59 ft./lbs.
NOTE
Air intake screen must be kept clean. If
plugged, engine may be seriously dam-
aged by over heating.
5. MOWER BLADES:
Check sharpness of mower blades after every 10
hours of operation. To sharpen blades proceed as
2. TACHOMETER / HOURMETER (Optional)
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.
follows:
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.
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.
3. BATTERY:
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
30 Degrees
When Notch Starts
Discard Blade
Dangerous!
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.
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
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.
AVOID SERIOUS INJURY OR DEATH:
l
THE BATTERY CONTAINS SULFURIC ACID.
AVOIDCONTACTWITHSKIN, EYESORCLOTHING.
EYES-FLUSHWITHWATERANDGETPROMPTMED-
ICALATTENTION.
ANTIDOTE: INTERNAL - DRINK LARGE QUANTITIES
OF WATER OR MILK. FOLLOW WITH MILK OF MAG-
NESIA, BEATEN EGG OR VEGETABLE OIL. CALL A
PHYSICIAN IMMEDIATELY.
6. CLEANING GRASS BUILD UP UNDER DECK
l
l
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.
Depress the deck lift foot pedal and lock in position,
then move the height adjustment pin to the 4-1/2”
position.
Lift the front of the unit and support unit securely.
KEEP OUT OF REACH OF CHILDREN.
Clean out any grass build up from underside of deck
and in deck discharge chute.
16
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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, or
forward position, 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 Control Adjustment” for
side(s) that wheel turns.
Lever Position Adjustment Bolts
MOTIONCONTROLSTEERINGADJUSTMENT
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.
Jamnut
4. Start the engine. Run the engine at full
throttle and release brake.
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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36” & 42” Deck- Spring length of 16” for 3” cut-
ting height. For lower cutting heights loosen
springs at 1/4” intervals until stop hits adjusting
pin in correct height location. If deck floats,
loosen springs at 1/4” intervals until deck stops
floating.(Measure from back of flatwasher to
back of flatwasher)
LEVELING THE DECK AND SETTING THE
COUNTERBALANCE SPRING TENSION
CAUTON
STOP THE ENGINE, SET PARKING BRAKE,
REMOVE IGNITION KEY AND SPARK PLUG
WIRES FOR SAFETY.
1. Set all tire pressures to the correct specifications.
2. Rest machine on a level slab of concrete.
3. Depress the deck lift pedal to raise the deck to the
full lift height position and move the height adjust
pin to the 4.5” position.
4. Take all the force off the deck lift spring by
loosening the nut at the front of the spring.
5. 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.
DECK BELT ADJUSTMENT
Belt adjustment should be checked every (50) hours
of operation to get maximum life and cutting perfor-
mance. Belt tension is adjusted by increasing or
decreasing the length of the spring on the movable
idler by adjusting the eye bolt length (Shown below).
For correct belt tension, adjust the spring length to 7”
for the 36” and 7-1/2” for the 42” deck.
6. Lay a .12” spacer beneath the front level. this will
automatically set the rear of the deck higher than
the front.
7. Adjust the bolts in the slot to raise the rear of the
deck (Shown below) until the level’s bubble is cen-
tered. Repeat for the other side.
8. Check to verify the deck is leveled side-to-side. To
do this, lay a 2” x 4” x 30” piece of wood under
each side of the deck and lower the deck to rest
freely on the top of these boards. Inspect the (3)
lift hangers to see if tension is on each of them. If
any of the hangers appear slack, adjust the bolt in
the slot to remove the slack.
DECK BELT REPLACEMENT
(NOTE: Use only genuine Bush Hog
replacement parts)
1. Remove the R.H. and L.H. deck shield assem-
blies and remove the foot platform.
2. Relieve the spring tension by loosening the two
3/8” hex nuts on the spring adjustment eye bolt.
3. Remove the old belt.
4. Install the new belt being sure the belt is properly
routed and positioned in all sheave grooves.
5. Adjust tension on the belt by adjusting the length
of the spring on the idler (See Deck Belt
Adjustment section).
9. Raise the deck up to the transport position and pin
in the desired height position.
10. Remove the 2” x 4”s from under the deck.
11. Tighten the counterbalance spring nuts until
6. Replace the deck shield assemblies and foot platform.
spring is to the following length:
DECK BELT DIAGRAM
Spring Length - 36” Deck - 7”, 42” Deck - 7-1/2”
(Measured From
Of Hooks)
Bolt In Slot
Level on
Mower Deck
.12” Spacer At Front End
Eye Bolt Adjustment
Height
Adjustment Pin
Upper
Chain Fastener
Spring Loaded Idler
Deck
Lift Pedal
WARNING
TO AVOID SERIOUS BURN INJURIES:
l
ALLOW ENGINE, OIL AND HYDRAULIC FLU-
IDS TO COOL BEFORE SERVICING TRANSMIS-
SION OR ENGINE SYSTEM
CAUTION
TO AVOID CLEANING SOLVENT FIRES:
l
AVOID USING FLAMMABLE SOLVENTS.
Deck
Shield
l AVOID AREAS WITH IGNITION SOURCES
Deck
Deck Lift Spring
WHEN USING FLAMMABLE SOLVENTS.
18
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WARNING
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
will drop and bubbles may appear in the fluid. Refill
the transaxle as necessary.
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.
Place the steering levers in the neutral position and
open the bypass valve. Slowly move the steering
levers in both the forward and reverse directions to
purge the air from the closed circuit.
TO AVOID SERIOUS INJURY FROM
PRESSURE LEAKS:
l USE CARDBOARD AND NOT HANDS TO
SEARCH FOR LEAKS.
l RELIEVE HYDRAULIC PRESSURE BEFORE
WORKING ON SYSTEM.
l CHECK HYDRAULIC HOSES, LINES, AND
CONNECTIONS FOR TIGHTNESS AND
GOOD CONDITION BEFORE APPLYING
SYSTEM PRESSURE.
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 transaxle as necessary.
Stop the engine, check for and correct any fluid leaks,
and check the oil level. Add fluid if necessary. The
transmission is now ready for operation.
START-UP MAINTENANCE
HYDROSTATIC MAINTENANCE
HYDROSTATIC FLUID
Check the fluid level in the transaxle every 50 hours.
Bush Hog recommends the use of 20W50 motor oil
in the hydrostatic transaxle.
START-UP PROCEDURE
The hydrostatic transaxle units normally do not
require regular fluid changes. The system filter should
be changed every 250 hours. The fluid and filter
should be changed and the system cleaned if the fluid
becomes contaminated with foreign matter (water,
dirt, etc.) .Refer to illustration below.
WARNING
TO AVOID INJURY FROM EQUIPMENT GROUND
TRAVEL AND MOVEMENT DURING
START-UP PROCEDURE:
DO NOT START OR JOG ENGINE UNTIL:
PARKING BRAKE ADJUSTMENT
l PUMP IS IN NEUTRAL POSITION
l DRIVE WHEELS ARE RAISED OFF THE
GROUND.
l EQUIPMENT IS SECURELY BLOCKED-UP TO
KEEP WHEELS FROM GROUND CONTACT.
l PTO AND OTHER WORK FUNCTIONS ARE
DISCONNECTED.
(Refer to next page for illustration and instructions for Parking
Brake Cable Replacement / Installation)
Check to make sure brake is adjusted properly.
l KEEP HANDS, HAIR AND CLOTHING AWAY
FROM ROTATING BLADES.
Force on the brake handle to lock the brake in place
should be 15 pounds. To adjust the brake tension,
shorten or lengthen the brake cable linkage.
The following start-up procedure should always be
followed when starting a new installation or when
restarting an installation in which the transaxle has
been removed from the system or when oil has been
changed in the transaxle.
Fluid Volume for the Home Series ZT
Fluid Description
Volume
20w50 Engine Oil
52.4 fl. oz. (1550 ml) to 55.8 fl. oz. (1650 ml)
Prior to starting the transaxle, make certain all sys-
tem components are clean prior to filling with fluid.
Top Of Fill Port
Remove the oil fill port fitting.
0.75” - 1.50 “ (19 - 38 mm)
depth at 50˚-100˚F
(10˚- 38˚C)
Fill the transaxle at the oil fill port according to the
diagram at right.
Oil Level
Install the oil fill port fitting.
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.
19
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If further adjustment is needed at each individual
wheel brake:
PARKING BRAKE CABLE
REPLACEMENT / INSTALLATION
1. Engage the brake lever (lever up).
1. The outside brake arms are to remain in the factory
installed position.
2. Remove the wheel from the side needing adjusting.
Loosen brake adjusting nuts, remove excess slack
from cable and retighten nuts.
2. Install brake cables finger tight and position the
brake handle in the “vertical” position.
3. Reinstall the wheel and torque the lug nuts.
Pump Drive Belt Tension Adjustment
1. Stop engine and remove key.
3. Open left and right relief valves on the pumps by
pulling the RH and LH levers to the rear and lock
out in the keyway slot to disengage for free-
wheeling. (See photo on page 14)
2. The pump drive belt tension is adjusted through a
spring loaded idler pulley.
4. Install the brake cable spring onto the brake arm.
5. Tighten the nuts on the brake cable casing to
remove excess slack.
3. Adjust the eye bolt so the spring length is 6-1/2”
(measured to the inside of the spring loops).
6. Install a wheel and tire on the transaxle hub.
7. Position the brake handle in the “Off” position.
The tire and wheel should rotate freely without
dragging.
RH Brake Cable
LH Brake Cable
Brake Cable
Adjusting Nuts
LH Outside Brake Arm
Brake Cable
Adjusting Nuts
Brake Handle
(Shown in Horizontal Position)
20
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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 transaxle oil low _________________________________________________________add oil
Pump bypass valve open________________________________________________put in closed position
Bad transaxle ______________________________________________________________consult dealer
4. POWER UNIT LOSES POWER OR HYDROSTAT SYSTEM OVERHEATS
Hydrostatic transaxle oil too low _____________________________________________________add oil
Transaxle damaged _________________________________________________________consult dealer
Hydrostatic transaxle 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:
Bad ground connection
*
Always mow at full throttle.
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” on 36” deck,
7-1/2” on 42” deck.
Bad PTO switch
DECK IS PLUGGED WITH GRASS:
*
*
*
*
*
Clean underneath the mower.
2. ENGINE WILL TURN OVER,
BUT WILL NOT START:
BLADES ARE NOT SHARP:
A. If there is spark at the plug:
No fuel
Sharpen the blades or replace.
Bad fuel solenoid in engine
CUTTING HEIGHT:
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:
Check safety interlock switches:
Seat switch
Replace your blades.
Neutral switch
Bad ignition module on engine
21
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SECTION IV
ASSEMBLY
Control Lever
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.
MOUNTING THE SEAT
Mount the 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.
Park Brake Lever
Attach the seat safety wires to the seat switch.
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 pins.
Seat Mounting Plate
BATTERY
Attach the positive lead to the battery.
Additional wire tie straps are shipped to secure the
wiring harness as needed.
ITEMS TO CHECK:
Seat Safety Wires
5/16” Mounting Studs
w/Locknuts
Check oil level in the engine (see engine manual)
Check tightness of all fasteners, including bolts, lug
nuts, and setscrews.
Check tire pressure.
Discharge Chute
22
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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.
83056
94132
50012615
50043277
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50029501
50043279
50048632
50043280
94134
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 Head Markings
B O LT D IA M ETER
(IN .) “B ” A N D
TH R EA D SIZE
W R EN C H
SIZE (IN .) “A ”
SA E
G R A D E 2
SA E
G R A D E 5
SA E
G R A D E 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”
1 - 14 UNF
SAE Grade 8
(6 Dashes)
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.
ASTM
4.6
ASTM
8.8
ASTM
9.8
ASTM
10.9
(mm) “A”
(mm) “B”
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.
211 (286)
418 (566)
*U se 75% of the specified torque value for
plated fasteners. U se 85% of the speci-
fied torque values for lubricated fasteners.
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HOME SERIES
ZERO TURN RIDING MOWERS
Optional Equipment:
Sun Shade Kit
Light Kit
Mulching Kit 36”
Mulching Kit 42”
Grass Catcher 36” & 42”
2 Post ROPS
Tachometer / Hour Meter Kit
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SLOPE ANGLE GUIDE
ALIGN THIS EDGE WITH A VERTICAL SURFACE
(TREE. BUILDING, FENCE POST. POLE, ETC.)
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P.O. Box 1039
l
Selma, AL 36702-1039
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