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OPERATOR’S MANUAL
™
AutoDrive Lawn Tractor
Model 604
Model U604H Shown
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 th
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SECTION 1: TABLE OF CONTENTS PAGE FINDING YOUR MODEL NUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 CALLING CUSTOMER SUPPORT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 IMPORTANT SAFE OPERATION PRACTICES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 SAFETY LABLES FOUND ON YOUR UNIT. . . . . . . . . . . . . . .
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SECTION 4: 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 YOUR LAWN MOWER. FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY. WHEN YOU SEE THIS SYMBOL, HEED ITS WARNING. WARNING: The Engine Exhaust from this product contains chemicals known to the Sta
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Disengage all attachment clutches, thoroughly 3. CHILDREN depress the brake pedal, and shift into neutral Tragic accidents can occur if the operator is not alert to the before attempting to start engine. presence of children. Children are often attracted to the Your mower is designed to cut normal residential machine and the mowing activity. Never assume that chil- grass of a height no more than 10". Do not attempt dren will remain where you last saw them. to mow through unusually tall, dry
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Keep all nuts, bolts and screws tight to be sure the Do not change the engine governor settings or equipment is in safe working condition. overspeed the engine. Excessive engine speeds are dangerous. Never tamper with safety devices. Check their proper operation regularly. Use all guards as Observe proper disposal laws and regulations. instructed in this manual. Improper disposal of fluids and materials can harm the environment and the ecology. After striking a foreign object, stop the
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FOLD ON DOTTED LINE, REPRESENTING A 15° SLOPE USE THIS PAGE AS A GUIDE TO DETERMINE SLOPES WHERE YOU MAY NOT OPERATE SAFELY. SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE A POWER POLE A CORNER OF A BUILDING OR A FENCE POST 15° 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. If operating a walk-behind mower on such a slope, it is extremely difficult to maintain your f
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SECTION 5: ATTACHMENTS & ACCESSORIES MODEL NUMBER DESCRIPTION ™ OEM-190-601 FastAttach Twin Bagger Grass Collector (For 42-inch Decks Only) ™ OEM-190-602 FastAttach Twin Bagger Grass Collector (For 46-inch Decks Only) OEM-190-112 Mulch Kit (For 42-inch Decks Only) OEM-190-118 Mulch Kit (For 46-inch Decks Only) ™ OEM-190-603 FastAttach Grille Guard (mounts on front of tractor) ™ OEM-190-604 TracPac Storage Container (mounts on rear of tractor) ™ OEM-190-822 FastAttach 46-inch Front Dozer Blade O
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SECTION 7: CONTROLS B D I N* M F* A P H G C J E K L NOTE: Steering Wheel not shown for clarity. Figure 3 A Ignition Switch H Brake Pedal B Throttle Control Lever I Parking Brake Button C Choke Control (if so equipped) J Shift Lever D Indicator Monitor/Hour Meter K Seat Adjustment Lever E Lift Lever L Cup Holder F PTO (Power Take-Off) Lever* M Cruise Control Button ™ G AutoDrive Pedal N PTO (Power Take-Off) Knob* *Tractors vary by model and are equipped with either a PTO lever or a PTO knob
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IGNITION SWITCH IMPORTANT: When using PTO operated equipment such as the cutting deck or other To start the engine, insert key into the ignition switch attachments, always operate the tractor with the and turn clockwise to the START position. Release throttle lever in the FAST (rabbit) position. key to the ON position once engine has fired. See Figure 4. Refer to STARTING THE ENGINE in the CHOKE CONTROL OPERATION section of this manual for detailed starting instructions. The ignition switch is
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ELECTRIC PTO BRAKE PEDAL (POWER TAKE-OFF) KNOB To engage the power to the cutting BRAKE deck or other attachments, pull outward on the PTO knob. Push the PTO knob inward to disengage the power to the attachments. The brake pedal is located on the right front side of ™ the tractor above the AutoDrive pedal along the NOTE: The PTO knob must be in the disengaged running board. The brake pedal can be used for (OFF) position when starting the engine, when sudden stops or setting the parking brak
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SHIFT LEVER CRUISE CONTROL BUTTON F The shift lever is located The cruise control button is located on on the left side of the the tractor dash panel to the left of the fender and has three ignition switch. Push the cruise control positions, FORWARD, button while traveling forward at a NEUTRAL and REVERSE. desired speed. While holding the The brake pedal must be button in, release pressure from the ™ pedal. This will engage the depressed and the tractor AutoDrive N must not be in motion cruise
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SETTING THE CUTTING HEIGHT STOPPING THE ENGINE Select the height position of the cutting deck by Place the PTO lever, or PTO knob in the placing the deck lift lever in any of the six different disengaged (OFF) position cutting height notches on the right side of the fender. Move the throttle control into the SLOW Then adjust the deck wheels so that they are at least (turtle) position and allow the engine to "idle 1/4 inch to 1/2 inch above the ground when the down" for ten seconds. Failure t
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While continuing to hold the cruise button in, To turn the tractor’s headlights off: ™ pedal (you lift your foot from the AutoDrive Turn the key either into the On position (to should feel the cruise latch engage). leave the engine running) or the Off position If properly engaged, the cruise control button (to shut the engine off). Refer to Figure 4. ™ and the AutoDrive pedal should lock in the IMPORTANT: Never move the key into the Start down position, and the tractor will maintain the
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The operator must remain in the tractor seat MOWING at all times. If the operator should leave the This tractor is equipped with one of MTD’s high seat without pushing the PTO knob inward quality cutting decks. The following information will into the disengaged (OFF) position, the be helpful when using the cutting deck with your tractor’s engine will shut off. tractor. IMPORTANT: The PTO knob cannot be in the WARNING: To avoid possible injury, do engaged (ON) position when the tractor is drivi
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With the tractor parked on a firm, level adjustment and proceed, if necessary, to the surface, place the lift lever in the top notch next step. (highest position) and rotate the blade nearest Loosen the two jam nuts on the rear side of the discharge chute so that it is parallel with the deck stabilizer bracket. See Figure 8A. the tractor. Locate the two lock nuts on the opposite side Measure the distance from the front of the of the stabilizer bracket. See Figure 8A. blade tip to the gr
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Replace hex nut and lock washer and SEAT ADJUSTMENT retighten the jam nut after proper adjustment To adjust the position of the seat, move the seat is achieved. adjustment lever (located under the seat) to the left and slide the seat forward or backwards. See Figure NOTE: Threading the ball joints too far onto the 9. Make sure seat is locked into one of the six drag links will cause the front tires to "toe-in" too far. adjustment positions before operating the tractor. Proper toe-in is between
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Loosen, but do NOT remove, the hex nut Hex Nut found on the right side of the brake assembly. See Figure 12. Using a feeler gauge, set the gap between the brake disc and the brake puck at .011". Re-tighten the hex nut loosened earlier. Set Gap at .011" Brake Disc Compression Spring Transmission NOTE: View shown from beneath tractor. Figure 12 SECTION 10: MAINTENANCE Pop open the protective cap on the end of the WARNING: Disconnect the spark plug oil drain valve to expose the oil dr
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Lower the deck by moving the lift lever into the CLEANING THE ENGINE AND DECK bottom notch on the right fender. Any fuel or oil spilled on the machine should be Grasp the PTO idler pulley bracket (PTO wiped off promptly. Do NOT allow grass, leaves, and engagement plate on manual PTO units) and dirt to accumulate around the cooling fins of the pivot it toward the discharge chute to relieve engine or on any other part of the machine, tension on the belt. especially the pulleys and other movin
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CHANGING THE DECK BELT(S) All belts on your tractor are subject to wear and should be replaced if any signs of cracking, shredding or rotting are present. IMPORTANT: The V-belts found on your tractor are specially designed to engage and disengage safely. A substitute (non-OEM) V-belt can be dangerous by not disengaging completely. For a proper working machine, use factory approved belts. To change or replace the deck belt(s) on your tractor, proceed as follows: NOTE: Removing the deck from the t
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Engine Pulley PTO belt Deck Stop (mounted on tractor) Belt Guard PTO Engagement Plate Idler Pulleys (mounted on tractor) Right Hand Pulley Left Hand Pulley NOTE: Belt covers not shown for clarity. Figure 16 42-Inch Deck 42-Inch Deck 46-Inch Deck (Electric PTO) (Manual PTO) (Electric PTO) PTO (Top) Belt 754-0472 742-0485 754-0474 Bottom Belt N/A N/A 754-0349 CHANGING THE TRANSMISSION DRIVE BELT(S) All belts on your tractor are subject to wear and should be replaced if any signs of cracking, s
