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Warning: 

This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-covered, brush-

covered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting applicable local or state laws (if any). 
If a spark arrester is used, it should be maintained in effective working order by the operator. In the State of California the above is required by law 
(Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark arrester 
for the muffler is available through your nearest engine authorized service dealer or contact the service department, P.O. Box 361131 Cleveland, 
Ohio 44136-0019.

Troy-Bilt LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

PRINTED IN U.S.A

READ SAFETY RULES AND INSTRUCTIONS CAREFULLY BEFORE OPERATION

IMPORTANT

OPERATOR’S MANUAL

11/13/2006

FORM NO. 770-10490K

Safety • Assembly • Operation • Adjustment • Maintenance • Troubleshooting • Parts Lists • Warranty

Automatic Lawn Tractor — Super Bronco™

Summary of Contents for Super Bronco

Page 1: ...d by law Section 4442 of the California Public Resources Code Other states may have similar laws Federal laws apply on federal lands A spark arrester for the muffler is available through your nearest...

Page 2: ...rating Your Lawn Tractor 10 Adjusting Your Lawn Tractor 18 Maintaining Your Lawn Tractor 20 Off Season Storage Attachments 26 Safety Labels 27 Trouble Shooting 28 Replacement Parts 30 If you have diff...

Page 3: ...e serious injury Operate riding mowers up and down slopes never across the face of slopes 3IGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE OR A CORNER OF A BUILDING OR A FENCE POST O L D A L O N G D O T...

Page 4: ...n refuel such equipment on a trailer with a portable container rather than from a gasoline dispenser nozzle d Keep the nozzle in contact with the rim of the fuel tank or container opening at all times...

Page 5: ...deck Contact with the blade s can amputate hands and feet 12 A missing or damaged discharge cover can cause blade contact or thrown object injuries 13 Stop the blade s when crossing gravel drives wal...

Page 6: ...n slowly and gradually downhill if possible 2 Do not mow near drop offs ditches or embankments The mower could suddenly turn over if a wheel is over the edge of a cliff ditch or if an edge caves in 3...

Page 7: ...amage e g excessive wear bent cracked Replace the blade s with the original equipment manufacturer s O E M blade s only listed in this manual Use of parts which do not meet the original equipment spec...

Page 8: ...the bolt and nut Attaching The Seat NOTE For shipping reasons seats are either fastened to the tractor seat s pivot bracket with a plastic tie or mounted backward to the pivot bracket In either case...

Page 9: ...andling gasoline Gasoline is extremely flammable and the vapors are explosive Never fuel machine indoors or while the engine is hot or running Extinguish ciga rettes cigars pipes and other sources of...

Page 10: ...rake Pedal D Shift Lever J Drive Pedal E Cup Holder K Deck Lift Lever F Throttle Lever NOTE Any reference in this manual to the RIGHT or LEFT side of the tractor is observed from operator s position N...

Page 11: ...safety interlock switch when starting the tractor Ignition Switch The ignition switch is activated to start the engine Insert key into the ignition switch and turn clockwise to the START position Rele...

Page 12: ...adjustment knobs to lock the seat in place Refer to Seat Adjustment in the Adjusting Your Tractor section of this manual for more detailed instructions Deck Lift Lever Found on your tractor s right fe...

Page 13: ...ise Control Button The cruise control button is located on the tractor dash panel to the left of the ignition switch Push the cruise control button while traveling forward at a desired speed While hol...

Page 14: ...brake button inward 2 Hold the parking brake button in while removing your foot from the brake pedal 3 Once engaged the parking brake button and the brake pedal will lock in the down position To disen...

Page 15: ...d ground against the engine Thoroughly inspect the machine for any damage Repair the damage before restarting and operat ing Driving The Tractor WARNING Avoid sudden starts ex ces sive speed and sudde...

Page 16: ...Engaging the PTO Blade Engage transfers power to the cutting deck or other separately available attachments To engage the blades proceed as follows 1 Move the throttle control lever to the FAST rabbi...

Page 17: ...direction to throw the discharge to the outside for the balance of cutting This will give a better appearance to the lawn Do not cut the grass too short Short grass invites weed growth and yellows qui...

Page 18: ...cap screw on the left deck hanger bracket when proper adjustment is achieved Parking Brake Adjustment WARNING Never attempt to adjust the brakes while the engine is running Always disengage PTO move s...

Page 19: ...int See Fig 5 4 2 Remove hex nut on the top of ball joint See Fig 5 4 3 Thread the ball joint toward the jam nut to shorten the drag link Thread the ball joint away from the jam nut to lengthen the dr...

Page 20: ...tor oil Air Cleaner Service the pre cleaner if so equipped and cartridge air cleaner element as instructed in the Engine Operator Owner Manual packed with your unit Spark Plug The spark plug s should...

Page 21: ...ting deck engaged for a minimum of two minutes allowing the underside of the cutting deck to thoroughly rinse 10 Move the tractor s PTO Blade Engage into the OFF position 11 Turn the ignition key to t...

Page 22: ...ly a charger designed for 12V lead acid batteries Read your battery charger s Owner s Manual prior to charging your tractor s battery Always follow its instruc tions and heed its warnings If your trac...

Page 23: ...f the blades along the cutting edges parallel to the trailing edge at a 25 to 30 angle IMPORTANT If the cutting edge of the blade has already been sharpened to within 1 5 8 from the edge or if any met...

Page 24: ...e the belt keeper rod s from around the engine pulley 2 Remove the cutting deck as instructed earlier in this section 3 Remove the belt guards by removing the self tapping screws that fasten them to t...

Page 25: ...25 6 Maintaining Your Lawn Tractor Figure 6 7 42 inch Deck Engine Pulley Idler Pulleys Left Hand Spindle Pulley Right Hand Spindle Pulley...

Page 26: ...ctor WARNING Never store the machine or fuel container indoors where there is an open flame spark or pilot light such as on water heater furnace clothes dryer or other gas appliance Attachments Access...

Page 27: ...PARKING BRAKE SHUT OFF AND REMOVE KEY R A I G BLADES CAUSE SERI US I JURY R DEA H DO NOT MOW WHEN CHILDREN OR OTHERS ARE AROUND NEVER CARRY CHILDREN EVEN WITH BLADE S OFF LOOK DOWN AND BEHIND BEFORE D...

Page 28: ...engine with throttle in FAST position 8 Engage parking brake 9 Place throttle lever to FAST position Engine runs erratic 1 Push CHOKE control if so equipped in or move the throttle control out of the...

Page 29: ...y or gap too wide 2 Dirty air cleaner Mower will not mulch grass models equipped with a mulch kit 1 Place throttle control in FAST rabbit position 2 Do not mow when grass is wet wait until later to cu...

Page 30: ...lder 734 1731 Tire Rear 20 x 8 x 8 Square Shoulder 734 1730 Hub Cap 731 05674 Fuel Tank Cap 951 3111 Throttle Choke Control Cable Kohler Single Cylinder 746 04364 Discharge Chute Assembly 931 1032B 10...

Page 31: ...rranty period stated above If the part fails during the period of warranty coverage the part will be repaired or replaced by MTD Consumer Group Inc according to subsection 4 below Any such part repair...

Page 32: ...inish due to use or exposure d Service completed by someone other than an authorized service dealer e Troy Bilt does not extend any warranty for products sold or exported outside of the United States...

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