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Operator's Manual
Auto Drive
Lawn Tractors
Models 604G & 604H
IMPORTANT:
Read safety rules and instructions
carefully
before operating
equipment.
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. BOX361131CLEVELAND, O HIO44136-0019
PRINTED IN U.S.A.
FORM NO. 770-104481:;
(11/2003)
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Summary of Contents for Yard-Man 604G
- Page 1 Operator's Manual Auto Drive Lawn Tractors Models 604G & 604H IMPORTANT: Read safety rules and instructions carefully before operating equipment. 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...
- Page 2 TABLEOFCONTENTS Content Page Content Page Maintenance Customer Support Attachments & Accessories Important Safe Operation Practices Illustrated Parts List Tractor Set-U p Operation Warranty Back Cover Making Adjustments FINDINGMODELNUMBER This Operator's Manual is an important part of your new lawn tractor. It will help you assemble, prepare and maintain the unit for best performance.
- Page 3 SECTION 1: IMPORTANT SAFEOPERATION P RACTICES 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.
- Page 4 27. Use only accessories and attachments approved forthis Do not tow heavy pull behind attachments (e.g. loaded machine bythemachine manufacturer. Read, dump cart, lawn roller, etc.) on slopes greater than 5 understand and follow allinstructions provided with the degrees. When going down hilt, the extra weight tends to approved accessory orattachment.
- Page 5 Never fill containers inside a vehicle or on a truck serviced professionally by your Troy-Bilt dealer. or trailer bed with a plastic liner. Always place Check brake operation frequently as it is subjected to containers on the ground away from your vehicle wear during normal operation.
- Page 6 SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE 1'91 A POWER POLE lULl 15 ° lULl ,_WARNING Do not mow on inclines with a slope in excess of 15 degrees (a rise of approximately 2-1/2 feet every 10 feet). A riding mower could overturn and cause serious injury.
- Page 7 SECTION 3: TRACTOR SET-UP NOTE: This manual covers specifications of two models. Please follow instructions and parts numbers pertaining to your tractor only. Attachi £ Batter Cables NOTE: If these cables are already attached, proceed to "Attaching Steering Wheel." IMPORTANT: The positive battery terminal is marked Pos. (+).
- Page 8 ARNING" the machine and pull back on seat until fully engaged into stop. Before operating this machine, make sure the seat is engaged in the seat stop, stand behind Slide the seat slightly rearward in the seat pivot bracket, lining up the rear slots in the pivot bracket with the remaining two holes in the seat's base.
- Page 9 SECTION 4: OPERATION Kssw th®88st 81s Read this owner's manual and safety rules before operating your lawn mower. Compare figure below with your lawn tractor to learn about the Ioction and purpose of various controls and adjustments. Save this manual for future reference.
- Page 10 ThrottleControlLever The throttle control lever controls the speed of the engine. When set in a given position, the throttle will maintain a uniform engine speed. IMPORTANT:When operating the tractor with the cutting deck engaged, throttle control lever must always be in the FAST (rabbit) position. ChokeControl The choke control can be found on the left side of the dash panel and is activated by pulling the knob outward.
- Page 11 Headlights • To turn on the headlights, rotate the same ignition key from ON position to ON/LIGHTS position of the ignition switch. • To turn off the headlights, rotate the ignition key from ON/LIGHTS position to either ON position (to leave the engine running) or OFF position (to shut the engine off).
- Page 12 • To change to the reverse direction when operating with cruise control, depress the brake pedal to disengage the cruise control and bring the tractor to a complete stop. Then place the shift lever in the REVERSE position and depress the drive pedal. SeatAdjustment Lever To adjust the seat forward or backward, loosen the two seat adjustment knobs and reposition the seat to the desired position.
- Page 13 NOTE: Refer to the TRACTOR SET-UPon page 7 manual for gasoline and oil flU-up instructions. Insert the tractor key into the ignition switch. Disengage the PTO (Blade Engage) lever. Engage the tractor's parking brake. Pull the Choke Control knob outward. Turn the ignition key clockwise to the START position.
- Page 14 • For best results it is recommended that the first two laps be cut with the discharge thrown towards the center. After the first two laps, reverse the direction to throw the discharge to the outside for the balance of cutting. This will give a better appearance to the lawn.
- Page 15 SECTION 5: MAKING ADJUSTMENTS ARNING" Never attempt to make any adjustments while the engine is running, except where specified in the operator's manual.Disconnect spark plug wire(s) and ground against the engine before performing any adjustments, repairs or maintenance. Seat Knob WARNING"...
- Page 16 With the tractor parked on a firm, level surface, place Lock Nut the deck lift lever in the top notch (highest position) and rotate the blade nearest the discharge chute so Deck that it is parallel with the tractor. Measure the distance from the front of the blade tip to Stabilizer Bracket the ground and the rear of the blade tip to the ground.
- Page 17 SECTION 6: MAINTAINING YOUR LAWNTRACTOR ARNING" Before performing any maintenance or repairs, disengage PTO, move shift lever into neutral position, set parking brake, stop engine and remove key to prevent unintended starting. Refer to the engine manualfor engine maintenance instructions. •...
- Page 18 tractor and/or its serviceability. WARNING" Before servicing, repairing, or inspecting, always disengage PTO, move shift lever into neutral position, set parking brake, stop engine and remove key from tractor to prevent unintended starting. Ti e Pressure IMPORTANT: Never exceed the maximum inflation pressure shown on the sidewall of the tire. •...
- Page 19 Connect the other end of the negative (-) cable to the engine block of the stalled tractor, away from the battery, and stand back. Start the stalled tractor and leave it running to charge the battery. Disconnect the negative (-) jumper cable from the tractor. Disconnect the other end of the negative (-) jumper cable from the negative (-) post of the good battery.
- Page 20 IMPORTANT: Each cutting blade edge has to be ground equally to maintain proper blade balance. A poorly balanced blade will cause excessive vibration, may damage the tractor and/or result in personal injury. Hex Flange Nut Worn _paration Wind Wing nirnurn <...
- Page 21 IMPORTANT: When removing the battery, disconnect the NEGATIVE (Black) wire from its terminal first, followed by the POSITIVE (Red) wire. Re-install in reverse order. UpperDriveBelt Locate the transmission idler pulley on the upper drive belt by looking through the battery tray opening. See Figure 15.
- Page 22 After replacing the drive belts, adjust the drive Idler Place Wrenches Here pedal on your tractor as follows: Adj. Rod Locate the speed control assembly on the underside of the steering support bracket. See Neutral Figure 17. Return Remove both hairpin clips from the pin which is Bracket fastened to the speed control assembly (be careful not to lose the small flat washers found on the pin).
- Page 23 Remove the PTO belt from around the engine pulley and the PTO idler pulley. Grasp the deck idler pulley and pivot it toward the left side of the deck to relieve tension on the deck belt. Remove the belt from around all pulleys, including the deck idler pulley. Route the new belts as in Figure 18 &...
- Page 24 SECTION 7: OFF-SEASON S TORAGE 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. • Clean and lubricate the tractor as instructed on page 17 before storing for an extended period. WARNING"...
- Page 25 SECTION 8: TROUBLESHOOTING Engine fails to start PTOtever/knobengaged. Place PTO lever/knob in OFF position. Parking brake not engaged. Engage parking brake. Spark plug wire(s) disconnected. Connect wire(s) to spark plug. Throttle control lever not in correct Place throttle lever to CHOKE position. starting position.
- Page 26 SECTION 9: PARTSLISTFORMODELS 604G& 604H...
- Page 27 Models604G& 604H REF. PART REF. PART DESCRIPTION DESCRIPTION 710-3015 710-0599 Hex Cap Screw, 1/4-20 x .75 Self-tapping Screw, 1/4-20 x .50 710-0599 710-1017 Self-tapping Screw, 1/4-20 x .5 Torx Self-tapping Screw, 1/4-14 x .625 712-0324 710-3217 Hex Lock Nut, 1/4-20 Torx Screw, #8-32 x .375 710-0895 712-0142...
- Page 28 Models604G& 604H...
- Page 29 Models604G& 604H Ref. Part Description 747-1130B Deck Stabilizer Rod 683-0197B Lift Shaft Assembly 711-0332 Clevis Pin, .5 x .78 712-0206 Hex Nut, 1/2-13 712-0431 Flange Lock Nut, 3/8-16 712-0429 Lock Nut, 5/16-18 712-3083 Hex Nut, 1/2-13 714-0104 Internal Cotter Pin 714-0145 Internal Cotter Pin 716-0106...
- Page 30 Models604G& 604H...
- Page 31 Models604G& 604H Ref. Part Description 710-1260A Self-tapping Screw, 5/16-18 x .75 710-0604A Self-tapping Screw, 16-18 x .625 783-0726B RH Pivot Support Bracket 783-0727A LH Pivot Support Bracket 783-0728 Pivot Bar Bracket 710-0514 Hex Cap Screw, 3/8-16 x 1 (Grade 5) 711-1408 RH Drag Link 711-1409A...
- Page 32 Models604G& 604H 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. 41 47 1_51 4s\_...
- Page 33 Models604G& 604H Ref. Part Ref. Part Description Description 17840 710-0726 AB Screw 5/16-12 x 0.75 Mounting Bracket 618-04133 710-1260A LD Screw 5/16-18 x 0.75 Drive Assembly 618-04147 710-1611B TT Screw 5/16-18 x 0.75 Variable Spd. Pulley Assembly 647-04020 711-04159 Shift Lever Assembly 710-0607 TT Screw 5/16-18 x 0.5 712-0130...
- Page 34 Models604G& 604H...
- Page 35 Models604G& 604H Ref. Part Description 732-0614 Ring, Wire 716-0231 Ring, E Type, .750 736-0336 Flat Washer, 5/8 x 1.0 x .030" 736-0337 Flat Washer, 5/8 x 1.0 x .040* 736-0349 Flat Washer, 5/8 x 1.0 x .020* 736-0335 Washer, Thrust .635 x 1.26 x .06 710-1325 Self-tapping Screw, 1/4-20 x 1.625 719-04017...
- Page 36 Models604G& 604H 58 / "14 "23 39 / 10 / Model 604H Model 604G...
- Page 37 Models604G& 604H Ref. Ref. Part No. Part No. Description Description 17962 Switch Plate 747-1286A Rod: Belt Keeper 647-0064 748-0415B Lever Assembly: PTO Engage Spacer 683-0450 750-0956 Plate Assembly: PTO Engage Spacer 710-0224 AB Screw #10-16 x 0.5 756-0627B Idler Pulley 710-0276 756-0982B Carriage Screw: Special...
- Page 38 Models604G& 604H REF. PART DESCRIPTION 710-0227 Self-tapping Screw, #8-18 x .5 710-0599 Self-tapping Screw, 1/4-20 x .5 710-0604A Self-tapping Screw, 5/16-18 x .625 710-1237 Screw, #10-32 x .625 710-1314A Socket Cap Screw, 5/16-18 x .625 710-1315 Self-tapping Screw, 3/8-16 x 1.25 712-3017 Hex Nut, 3/8-16 721-0460...
- Page 39 _"D PTO INDICATOR LIGHT KEY SWITCH 725-1741 HEADLIGHTS HEADLIGHTS SEAT SWITCH 725-1303 G+M+A1 725-1439 YEL/BLK LOW OIL INDICATOR LIGHT ORGJW_T PTO SWITCH 725-1657A RUN 1 B+At L+A2 OILSENSOR RUN 2 ALTERNATOR B+A1 ALTERNATOR BRAKE SWITCH AFTERFIRE SOLENOID 725-1657A MAGNETO Ammeter START SOLENOID 725-1426...
- Page 40 Model604G 15\\\\ "\\. \\\\ .'4O ,_._54...
- Page 41 Model604G Ref. Part No. Ref. Part No. Description Description 711-04069 736-0270 Belt Washer, .265 x .75 x .062 Grass Catcher Pin, 1/4-20 618-0565 738-0373 Shoulder Screw, .498 x 1.53 Spindle Assy., 5.75 Dia. w/Fitting 683-0198G 42-inch Deck Shell 741-0524 Bearing, .625 x 1.574 x .470 683-0254 742-0616A Blade, Star Center, 21.23"...
- Page 42 Model604H 43_'_._. 12-_...
- Page 43 Model604H Ref. Ref. Part No. Description Part No. Description 736-0760 Lock Washer 618-04137 Pulley-Spindle Assembly 737-3007 Grease 683-0254 Deck Hanger Bracket Assembly 738-0372B 683-04103 Shoulder Spacer Deck Assembly 738-0373 Shoulder Screw 3/8-16 x 1.5 710-0347 Hex Bolt 3/8-16 x 1.75 742-0611A 710-0514 Hex Bolt 3/8-16 x 1.0...
- Page 44 MANUFACTURER'S LIMITED WARRANTY FOR: YaRD.MaN ® The limited warranty set forth below is given by MTD LLC with MTD does not extend any warranty for products sold or respect to new merchandise purchased and used in the exported outside of the United States, its possessions United States, its possessions and territories.