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Operator’s Manual Automatic Lawn Tractor Models 604 & 605 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).
TABLE OF CONTENTS Content Page Content Page Maintaining Your Lawn Tractor Customer Support Important Safe Operation Practices Service Off Season Storage Slope Gauge Attachments & Accessories Tractor Set-Up Know Your Lawn Tractor Troubleshooting Parts List Operating Your Lawn Tractor Making Adjustments Warranty FINDING MODEL NUMBER This Operator’s Manual is an important part of your new lawn tractor.
SECTION 1: IMPORTANT SAFE OPERATION 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.
23. Muffler and engine become hot and can cause a 4. Follow the manufacturer’s recommendations for burn. Do not touch. wheel weights or counterweights to improve 24. Check overhead clearances carefully before driving stability. under low hanging tree branches, wires, door 5.
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e. Use extreme care when approaching blind e. Extinguish all cigarettes, cigars, pipes and corners, doorways, shrubs, trees or other other sources of ignition. objects that may block your vision of a child Never fuel machine indoors. who may run into the machine. g.
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8. Never tamper with the safety interlock system or For safety protection, frequently check components other safety devices. Check their proper operation and replace immediately with original equipment regularly. manufacturer’s (O.E.M.) parts only, listed in this 9. After striking a foreign object, stop the engine, manual.
SECTION 3: TRACTOR SET-UP Attaching the Battery Cables Service the engine with gasoline and oil as instructed in the separate Briggs & Stratton Operator/Owner Manual packed with your tractor. Read instructions carefully. NOTE: The positive battery terminal is marked Pos. (+).
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Attaching The Seat Standard Adjustment Seat styles vary by tractor model and there are three different styles available: Hex Screws • Standard Adjustment • Quick Adjustment & • Knob Adjustment Shoulder If the seat for your tractor did not come attached, refer Screws to Figure 3, Figure 4, and Figure 5 to identify your tractor’s seat style and follow the applicable instructions...
Attaching The Steering Wheel Identifying the Mulch Plug (if so equipped) • If the steering wheel for your tractor did not come On tractor models so equipped, a mulch plug can either attached, the hardware for attaching it has been be found within the cutting deck’s discharge opening or packed within the steering wheel, beneath the packed separately with your unit.
SECTION 4: KNOW YOUR LAWN TRACTOR NOTE: Steering Wheel not shown for clarity. † If so equipped Figure 8 Systems Indicator Monitor Cruise Control Button PTO (Blade Engage) Lever Ignition Switch Module Choke Knob Brake Pedal Parking Brake Button Drive Pedal Shift Lever Deck Lift Lever Cup Holder...
Throttle Control Lever Ignition Switch Module The throttle control lever is located on the right side of WARNING: Never leave a running machine the tractor’s dash panel. This lever controls the speed unattended. Always disengage PTO, move of the engine and, on some models, when pushed all shift lever into neutral position, set parking the way forward, the choke control also.
Systems Indicator Monitor PTO (Blade Engage) Lever Your tractor is equipped with a ammeter as part of its systems indicator monitor. Locate the monitor on the left side of your dash panel and compare it to Figure 11. A M PS The PTO (Blade Engage) lever is located on the left side of the dashboard next to the steering wheel.
NOTE: Cruise control can NOT be engaged at the WARNING tractor’s fastest ground speed. If the operator should attempt to do so, the tractor will automatically decelerate to the fastest optimal mowing ground speed. AVOID SERIOUS INJURY OR DEATH Shift Lever •...
SECTION 5: OPERATING YOUR LAWN TRACTOR Safety Interlock Switches 3. Depress the REVERSE PUSH BUTTON (Orange, Triangular Button) at the top, right corner of the key This tractor is equipped with a safety interlock system switch module. The red indicator light at the top, left for the protection of the operator.
Setting the Cutting Height damage. Repair the damage before restarting and operating Select the height position of the cutting deck by placing • If the blades are engaged, place the PTO (Blade the deck lift lever in any of the six different cutting height Engage) lever in the disengaged (OFF) position.
• Avoid turns when driving on a slope. If a turn must The engine will automatically shut off if the IMPORTANT: be made, turn down the slope. Turning up a slope PTO is engaged with the shift lever in position for greatly increases the chance of a roll over.
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Mulching This will allow the clippings to discharge out the (If Equipped) side. See Figure 14. Select models come equipped with a mulch kit which Carriage Screw incorporates special blades, already standard on the tractor, in a process of recirculating grass clippings repeatedly beneath the cutting deck.
SECTION 6: MAKING ADJUSTMENTS WARNING: • Retighten the two jam nuts loosened earlier when Never attempt to make any proper adjustment is achieved. adjustments while the engine is running, except where specified in the operator’s Side to Side manual. If the cutting deck appears to be mowing unevenly, a side to side adjustment can be performed.
Parking Brake Adjustment To adjust the position of the seat on models equipped with a seat adjustment lever, move the lever to the left and slide the seat forward or rearward. Make sure seat WARNING: Never attempt to adjust the is locked into position before operating the tractor.
Steering Adjustment • Remove the hex nut on the top of ball joint. See Figure 20. If the tractor turns tighter in one direction than the other, • Thread the ball joint toward the jam nut to shorten or if the ball joints are being replaced due to damage or the drag link.
SECTION 7: MAINTAINING YOUR LAWN TRACTOR WARNING: • Refill the engine with new motor oil. Before performing maintenance or repairs, disengage PTO, Refer to the Briggs & Stratton Operator/ IMPORTANT: move shift lever into neutral position, set Owner Manual packed with your unit for information parking brake, stop engine and remove key to regarding the quantity and proper weight of motor oil.
SECTION 8: SERVICE Cutting Deck Removal • Gently slide the cutting deck toward the front of the tractor allowing the hooks on the deck to release To remove the cutting deck, proceed as follows: themselves from the deck stabilizer rod. •...
Jump Starting • Use a 15/16" wrench to remove the hex flange nut that secures the blade to the spindle assembly. See WARNING: When removing or installing Figure 23. the battery, follow these instructions to Wood Block Hex Flange Nut prevent the screwdriver from shorting against the frame.
42” Deck Use a torque wrench to tighten the blade IMPORTANT: spindle hex flange nut to between 70 foot-pounds and • Remove the belt keeper rod from around the 90 foot-pounds. engine pulley. • Insert a 3/8”-drive ratchet wrench (set to loosen) Fuses into the square hole found in the idler bracket on the left side of the deck’s surface.
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42-inch Decks Engine Pulley Left Hand Spindle Pulley Right Hand Spindle Pulley Idler Pulleys Figure 26 46-inch Decks Engine Pulley PTO Idler Bracket Deck belt (Bottom) (mounted on tractor) PTO belt (Top) Deck Idler Pulley Right Hand Pulley (beneath belt guard) Left Hand Double Pulley Center Pulley...
SECTION 10: ATTACHMENTS & ACCESSORIES The following attachments and accessories are compatible for Model 604 and 605 Lawn Tractors. See the retailer from which you purchased your tractor, an authorized MTD Service Dealer or phone (800) 800-7310 for information regarding price and availability.
SECTION 11: TROUBLESHOOTING Trouble Possible Cause(s) Corrective Action Engine fails to start PTO engaged. Place PTO lever in disengaged (OFF) position. Parking brake not engaged. Engage parking brake. Spark plug wire(s) disconnected. Connect wire(s) to spark plug(s). Throttle control lever not in correct Place throttle lever to FAST position.
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Model 605 Ref. Part Ref. Part Description Description 710-0726 Screw, 5/16-12 x.750 731-04215 Cruise Control Button 710-0599 Self-tapping Screw, 1/4-20 x.5 731-04217 Parking Brake Button 710-0751 Hex Cap Screw, 1/4-20 x.62 736-0142 Flat Washer, 9/32 x 1/2 x 1/16 746-1086 Throttle Control/Cable 747-1196 Brake/Cruise Pivot Rod...
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Models 604 & 605 Left Hand Transmission Bolt Mounting...
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647-0032A Control Assembly, Speed 736-0119 Lock Washer, 5/16 683-0266 Pedal Assembly 634-0177 Whl Ass’y Comp., 20 x 10 x 8 (Model 604) 710-0650 Screw, 5/16-18, 0.875 634-0104 Whl Ass’y Comp., 20 x 8 x 8 (Model 605) 710-1260A Screw,5/16-18, 0.750...
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Models 604 & 605 (42” Deck) To Deck For a proper IMPORTANT: 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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Models 604 & 605 (46” Deck) For a proper IMPORTANT: 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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Models 604 & 605 (46” Deck) REF. PART REF. PART DESCRIPTION DESCRIPTION 17962 Plate, Switch 747-1112D Engagement Handle, Deck 647-0064 Lever Assembly, Engagement 748-0415B Spacer,.385 ID x.635 OD x 1.54 683-0302 Plate Assembly, Engagement 750-0956 Spacer, 1.010 x 1.400 x.825 710-0224 Screw, #10-16, 0.500...
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MANUFACTURER’S LIMITED WARRANTY FOR: 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.
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