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Operator's Manual

Automatic Lawn Tractors

Super Bronco TM

Bronco TM

(Models T609 & J609)

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

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.

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

PRINTED IN U.S.A.

FORM NO. 770-10490F

(12/1/2004)

Summary of content (40 pages)

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® Operator's Manual Automatic Lawn Tractors Super Bronco TM Bronco TM (Models T609 & J609) IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY 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).
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TABLEOFCONTENTS Content Customer Support ImportantSafeOperationPractices SlopeGauge TractorSet-Up KnowYourLawnTractor Operating YourLawnTractor MakingAdjustments Page 2 3 Content Maintaining Your Lawn Tractor Service Page 18 19 7 8 Off Season Storage Attachments & Accessories 22 22 9 12 Troubleshooting Parts List 23 24 16 Warranty 40 FINDINGMODELNUMBER This Operator's Manual is an important part of your new lawn tractor.
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SECTION1: IMPORTANT SAFEOPERATION PRACTICES WARNING: This symbol points out important safety instructions which, if not followed, could endanger the personal safety and/or property of yourself and others. Read and follow all instructions in this manual before attempting to operate this machine. Failure to comply with these instructions may result in personal injury. When you see this symbol--heed its warning.
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23. Mufflerandenginebecomehotandcancausea burn.Donottouch. 24. Checkoverhead clearances carefullybeforedriving underlowhangingtreebranches, wires,door openingsetc.,wheretheoperatormaybestruckor pulledfromtheunit,whichcouldresultinserious injury. 25. Disengage allattachment clutches,depressthe brakepedalcompletely andshiftintoneutralbefore attempting to startengine. 26. Yourmachineis designedtocutnormalresidential grassofa heightnomorethan10".Donotattempt tomowthroughunusuallytall,drygrass(e.g.
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e. Useextremecarewhenapproaching blind corners,doorways, shrubs,treesor other objectsthatmayblockyourvisionofachild whomayrunintothemachine. f. Toavoidback-overaccidents,always e. f. g. disengage the cutting blade(s) before shifting into reverse, The "Reverse Caution Mode" should not be used when children or others are around, g. h. Keep children away from hot or running engines. They can suffer burns from a hot muffler. i. j. h. 9.
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8. Nevertamperwiththesafetyinterlocksystemor othersafetydevices.Checktheirproperoperation regularly. 9. Afterstrikinga foreignobject,stoptheengine, disconnect thesparkplugwire(s)andground againsttheengine.Thoroughly inspectthe machineforanydamage.Repairthedamage beforestartingandoperating. 10.Neverattempttomakeadjustments or repairsto themachinewhiletheengineis running. 11.Grasscatchercomponents andthedischarge coveraresubjecttowearanddamagewhichcould exposemovingpartsor allowobjectstobethrown.
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o E t- Sight and h01dthis levelwith a vertical tree... O >, j__ .e or a corner of a building... t_ _ o or a fence post I i I l "5 o .pc c5 09 m_ fl) _ eatsa150 q) O_ o _5 t- | >, E t_ o >, ¢ fl) r09 d3 O_ 15° q) I,,I.I u _L O ,i_ _ o_ of approximately 2-1/2 feet every lOfeet). Ariding mower __o°- Do not mowon inclines with aslopein excessof 15degrees(arise o_ 09 could overturn and cause serious injury.
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SECTION3: TRACTOR SET-UP Attachingthe BatteryCables NOTE: The positive battery terminal is marked Pos. (+). The negative battery terminal is marked Neg. (-). • • • • The positive cable (heavy red wire) is secured to the positive battery terminal (+) with a hex bolt and hex nut at the factory. Make certain that the rubber boot covers the terminal to help protect it from corrosion. Remove the hex bolt and wing nut from the negative cable.
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SECTION4: KNOWYOURLAWNTRACTOR i A\ G \ @ I J B @ @ C" D L E NOTE: Steering Wheel not shown for clarity. Figure 3 A PTO (Blade Engage) Lever G Throttle Lever B Ammeter H Ignition Switch Module C Choke Knob (Super Bronco Only) I Brake Pedal D E Parking Brake Button Shift Lever J K Drive Pedal Cruise Control Button F Cup Holder L Deck Lift Lever NOTE: Any reference in this manual to the RIGHT or LEFT side of the tractor is observed from operator's position.
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ThrottleControlLever IgnitionSwitch Module The throttle control lever is located on the right side of the tractor's dash panel. This lever controls the speed of the engine and, on the Bronco models, when pushed all the way forward, the choke control also. When set in a given position, the throttle will maintain a uniform engine speed. See Figure 4. (Bronco) Choke Position WARNING: Never leave a running machine unattended.
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Ammeter NOTE: The parking brake must be set if the operator leaves the seat with the engine running or the engine will automatically shut off. DP SV The ammeter measures the electrical output of the engine's charging system. Under normal operating conditions, with engine at full throttle, the ammeter should indicate IMPORTANT: Always set the parking brake when leaving the tractor unattended. CruiseControlButton positive charge.
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SECTION5: OPERATING YOURLAWNTRACTOR 3. SafetyInterlockSwitches This tractor is equipped with a safety interlock system for the protection of the operator. If the interlock system should ever malfunction, do not operate the tractor. Contact an authorized Troy-Bilt service dealer. • • • • • ,_ 4. The safety interlock system prevents the engine from cranking or starting unless the parking brake is engaged, and the PTO (Blade Engage) lever is in the disengaged (OFF) position.
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SettingtheCuttingHeight Stoppingthe Engine Select the height position of the cutting deck by placing the deck lift lever in any of the six different cutting height notches on the right side of the fender. Then adjust the deck wheels so that they are between 1A-inch and 1/2inch above the ground when the tractor is on a smooth, flat surface such as a driveway. WARNING: If you strike a foreign object, stop the engine, disconnect the spark plug wire(s) and ground against the engine.
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• WARNING • AVOIDSERIOUS INJURYORDEATH • • • • • • • • • • • • GO UP AND DOWN SLOPES, NOT ACROSS. AVOID SUDDEN TURNS. DO NOT OPERATE THE UNIT WHERE IT COULD SLIP OR TIR IF MACHINE STOPS GOING UPHILL, STOP BLADE(S) AND BACK DOWNHILL SLOWLY. DO NOT MOW WHEN CHILDREN OR OTHERS ARE AROUND. NEVER CARRY CHILDREN, EVEN WITH BLADES OFF. LOOK DOWN AND BEHIND BEFORE AND WHILE BACKING. KEEP SAFETY DEVICES (GUARDS, SHIELDS, AND SWITCHES) IN PLACE AND WORKING. REMOVE OBJECTS THAT COULD BE THROWN BY THE BLADE(S).
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• Mowing WARNING: To help avoid blade contact or a thrown object injury, keep bystanders, helpers, children and pets at least 75 feet from the machine while it is in operation. Stop machine if anyone enters the area. • • The following information will be helpful when using the cutting deck with your tractor. • WARNING: Plan your mowing pattern to avoid discharge of materials toward roads, sidewalks, bystanders and the like.
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SECTION6: MAKINGADJUSTMENTS • adjustments engineto ismake running, WARNING: while Nevertheattempt any except where specified in the operator's manual. ,_ Side to Side If the cutting deck appears to be mowing unevenly, a side to side adjustment can be performed. Adjust if necessary as follows: Levelingthe Deck • NOTE: Check the tractor's tire pressure before performing any deck leveling adjustments. Refer to Tires on page 19 for information regarding tire pressure.
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If the tractor does not come to a complete stop when the brake pedal is completely depressed, or if the tractor's rear wheels can roll with the parking brake applied, the brake is in need of adjustment. The brake disc can be found on the right side of the transmission in the rear of the tractor.
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SECTION7: MAINTAININGYOURLAWNTRACTOR • _, maintenance repairs, disengage WARNING: or Before performing PTO, any move shift lever into neutral position, set parking brake, stop engine and remove key to prevent unintended starting. IMPORTANT: Refer to the Briggs & Stratton Operator/ Owner Manual packed with your unit for information regarding the quantity and proper weight of motor oil.
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SECTION8: SERVICE IMPORTANT: Refer to the tire sidewall for exact tire CuttingDeckRemoval manufacturer's recommended or maximum psi. Do not overinflate. Uneven tire pressure could cause the cutting deck to mow unevenly. To remove the cutting deck, proceed as follows: • Place the PTO (Blade Engage) lever in the disengaged (OFF) position and engage the parking brake. • • • Battery Lower the deck by moving the deck lift lever into the bottom notch on the right fender.
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• could cause sparking, anduse thethis gasprocedure in either WARNING: Failure to battery could explode. _, • Cleaning Clean the battery by removing it from the tractor and washing with a baking soda and water solution. If necessary, scrape the battery terminals with a wire brush to remove deposits. Coat terminals and exposed wiring with grease or petroleum jelly to prevent Use a 15/16" wrench to remove the hex flange nut that secures the blade to the spindle assembly. See Figure 16.
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Insert a 3/8"-drive ratchet wrench (set to loosen) into the square hole found in the idler bracket on the left side of the deck's surface. See Figure 18. ChangingtheDeckBelt WARNING: Be sure to shut the engine off, remove ignition key, disconnect the spark plug wire(s) and ground against the engine to prevent unintended starting before removing the belt(s). WARNING: Avoid the possibility of a pinching injury.
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SECTION9: OFF-SEASON STORAGE Clean and lubricate the tractor as instructed in Section7: MAINTAINING YOURLAWNTRACTORon page 18 of this manual before storing for an extended period. ,_ Follow the instructions in the Service, Storage & Specifications section of the Briggs & Stratton Operator/Owner Manual for proper engine care prior to storing your tractor. approved container outdoors, away into from an WARNING: Drain fuel only an open flame. Allow engine to cool.
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SECTION11: TROUBLESHOOTING Trouble Possible Engine fails to start PTO engaged. Corrective Cause(s) Parking brake not engaged. Spark plug wire(s) disconnected. Throttle control lever not in correct starting position. Choke not activated Engine runs erratic Fuel tank empty, or stale fuel. Blocked fuel line. Faulty spark plug. Engine flooded. Unit running with CHOKE applied. Spark plug wire(s) loose. Blocked fuel line or stale fuel. Vent in gas cap plugged. Water or dirt in fuel system.
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SECTION12: PARTSLIST @ 24
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ModelsJ609 & T609 REE NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2O 21 22 23 24 25 26 27 28 29 3O 31 32 33 34 35 36 37 PART NO.
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ModelsJ609 & T609 ® ® @ // \! { 26
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ModelsJ609 & T609 REE NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 PART NO. 783-1346 710-0528 710-0599 712-3010 710-0895 710-0924 725-0157 712-0292 731-04960 735-04019 726-0201 783-0783 731-2637 783-04200 783-0784A 731-2269A 731-2270A 736-0119 747-2138 710-0642 736-0270 751-0603 710-0726 710-1017 710-1611B 710-3217 REF. NO. 26 27 28 29 30 31 32 33 34 35 DESCRIPTION Bracket, Grill Support Screw, 5/16-18 x 1.25 Screw, 1/4-20, 0.500 Hex Nut, 5/16-18 Screw, 1/4-15, 0.
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ModelsJ609 & T609 J ® 28
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ModelsJ609 & T609 REE NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 PART NO.
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ModelsJ609 & T609 To Deck © IMPORTANT: For a proper working machine, use Factory Approved Parts. V-belts are designed to engage and disengage safely. A substitute (non OEM) V-belt can be dangerous by not disengaging completely.
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ModelsJ609 & T609 REE NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 PART NO. 17962 647-04036 710-0809 710-0859 710-0276 710-1260A 710-3157A 710-0726 714-0145 732-04248 736-0171 746-04092 712-04065 750-0566A 714-0470 726-0201 731-2111A 783-04590 736-0322 741-0708 747-04307 747-1112D 748-0415B 750-0956 756-04064A 783-0744A REF. NO. 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 DESCRIPTION Plate, Switch Lever Assembly, Engagement Screw, 1/4-20 x 1.
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ModelsJ609 & T609 32
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ModelsJ609 & T609 REE NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 PART NO.
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ModelsJ609 & T609 5 8 9 1112 10 13 12 11 19 15 20 22 23 J 14 J 25 28 26 27 29 34
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ModelsJ609 & T609 REE NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 17 19 20 21 22 23 24 25 26 27 28 29 -- PART NO. 732-0614 716-0231 736-0336* 736-0337* 736-0349* 736-0335 710-1325 719-04017 711-1109 741-0335 717-1464 716-0108 741-0340 721-0338 618-04041 741-0336 717-04056 718-04045 711-04134 736-0495* 736-0494* 741-0337 611-0011 741-0862 732-0863 719-04018 717-0678 761-0202 710-1206 661-0001 737-0148 DESCRIPTION Ring, Wire Ring, E Type,.750 Flat Washer, 5/8 x 1.0 x.030 Flat Washer, 5/8 x 1.0 x.
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ModelsJ609 & T609 \ \\\\\\ 36
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ModelsJ609 & T609 REE NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2O 21 22 23 24 25 26 27 28 29 PART NO.
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ModelJ609 Ref, No. 1 2 11 1z 8 18 17 ModelT609 38 Part No. Description 710-0227 AB Screw #8-18 x 0.5 710-0599 TT Screw 1/4-20 x 0.5 3 4 5 6 7 8 9 10 710-0726 AB Screw 5/16-12 x 0.5 710-1237 T screw #10-32 x 0.625 710-1314A Socket Hd Scr. 5/16-18 x.750 710-1315 TT Screw 3/8-16 x 1.
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NOTES 39
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MANUFACTURER'S LIMITED WARRANTY FOR: ® The limited warranty set forth below is given by Troy-Bilt LLC with respect to new merchandise purchased and used in the United States, its possessions and territories. "Troy-Bilt" warrants this product against defects in material and workmanship for a period of two (2) years commencing on the date of original purchase and will, at its option, repair or replace, free of charge, any part found to be defective in materials or workmanship.