Table of Contents
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Operator's M nual
Lawn Tractor
Model 624
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 attester 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
attester for the muffler is available through your nearest engine authorized service dealer or contact the service department,
P.O. Box 368022
Cleveland, Ohio 44136-9722.
MTD PRODUCTS
INC. P.O. BOX 368022 CLEVELAND,
OHIO 44136-9722
PRINTED IN U.S.A.
FORM NO. 770-10444A
ECO No. 003236
(10/2000)
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Table of Contents
Related Manuals for Yard-Man 624
Summary of Contents for Yard-Man 624
- Page 1 Operator's M nual Lawn Tractor Model 624 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).
- Page 2 Attachments & Accessories ................Troubleshooting ....................Model 624 Parts List ..................FINDINGMODEL NUMBER This Operator's Manual is an important part of your new lawn tractor. It wilt help you assemble, prepare and maintain the unit for best performance. Please read and understand what it says.
- 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 23. Muffler a ndengine become h otandcancause a Use extra care with grass catchers or other burn.Donottouch. attachments. These can change the stability of the 24. Check overhead c learances carefully b efore driving machine. under lowhanging treebranches, wires, d oor Keep all movement on the slopes slow and gradual.
- Page 5 Serious personal injury can occur when gasoline is frame, your unit should be serviced professionally spilled on yourself or your clothes which can ignite. by an authorized MTD service dealer. Wash your skin and change clothes immediately. Check parking brake frequently as it is subjected to Use only an approved gasoline container.
- Page 6 9. Afterstriking aforeign object, s toptheengine, 12.Donotchange theengine governor settings or disconnect thesparkplug wire(s) a ndground over-speed theengine. T hegovernor controls t he against t heengine. T horoughly i nspect the maximum safeoperating s peed oftheengine. machine foranydamage. Repair t hedamage 13.Maintain orreplace safety andinstruction l abels, a s before starting andoperating.
- Page 7 SECTION 2: IMPORTANT NOTETOFIRST-TIMEOPERATORS The Revolution lawn tractor has a number of unique features. For example, there is a single pair of Control Handles which replace the steering wheel, forward!reverse shift lever, speed control and brake pedal typically found on conventional lawn tractors. Because of Revolution's unique controls, all first-time operators should thoroughly familiarize themselves with the function of all controls before beginning to mow.
- Page 8 SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE A POWER POLE A CORNER OF A BUILDING n,i I OR A FENCE POST 10 ° _WARNING Do not use the riding mower on inclines with a slope in excess of 10 degrees (a rise of approximately 2 feet every 10 feet).
- Page 9 SECTION 4: TRACTOR SET-UP Service the engine with gasoline and oil as instructed in Attaching theBatteryCables the separate Briggs & Stratton Operator!Owner Manual packed with your tractor. Read instructions carefully. NOTE: The positive battery terminal is marked Pos. (+). The negative battery terminal is marked Neg. (-). IMPORTANT: Your tractor is shipped with motor oil in the engine.
- Page 10 SECTION 5: KNOW YOUR LAWNTRACTOR Figure 3 Right Control Handle Adjustable Hand Rest Left Control Handle Throttle Control Lever Electric PTO (Power Take-off) Knob Choke Control (if so equipped) Systems Indicator Monitor/Hour Meter Ignition Switch Parking Brake Lever Seat Adjustment Lever Deck Lift Lever Cup Holder Hand Rest Bail...
- Page 11 ThrottleControl L ever Refer to Starting TheEngine on page 14 of this manual for detailed starting instructions The throttle lever is located on the right side of the The ignition switch is also used to operate the tractor's tractor's dash panel. This lever controls the speed of headlights.
- Page 12 Control H andles ChokeControl The control handles are located in the center of the On some units, moving the tractor's dash. Moving the handles forward or rearward throttle lever all the way forward controls both the ground speed of the tractor and the activates the engine's choke direction of travel.
- Page 13 AND BACK DOWNHILL SLOWLY. DO NOT MOW WHEN CHILDREN OR OTHERS ARE AROUND. Contact an authorized MTD Service Dealer in your NEVER CARRY CHILDREN, EVEN WITH BLADES OFE area. The safety interlock system prevents the engine LOOK DOWN AND BEHIND BEFORE AND WHILE BACKING.
- Page 14 Position the adjustable hand rest forward or StartingtheEngine rearward until a comfortable position is found for your application. NOTE: Refer to the TRACTOR SET-UPon page 9 of this Release the bail to lock the adjustable hand rest in manual for Gasoline and Oil fill-up instructions. place.
- Page 15 Control Handle Position Reference Chart ForwardStraight Forward Right Rotate Left Rotate Right ReverseLeft Reverse Straight Reverse Right...
- Page 16 Usingthe DeckLift Lever WARNING: Never leave running machine unattended Always turn off blades/ To raise the cutting deck, move the deck lift lever to the PTO, move both control handles into neutral left, then place it in the notch best suited for your position, set parking brake, stop engine and application.
- Page 17 Maintain a slow ground speed to allow the grass This tractor is equipped with one of MTD's high quality clippings more time to effectively be mulched. cutting decks. The following information wilt be helpful Always position the throttle control lever in the when using the cutting deck with your tractor.
- Page 18 Moving theTractorManually The Revolution lawn tractor has two transmissions, both of which are equipped with a hydrostatic bypass valve for occasions when it is necessary to move the tractor manually. Opening these valves forces the fluid in each transmission to bypass its normal route, allowing the rear tires to "freewheel."...
- Page 19 Balance thedeckbyusing a wrench toturnthe The deck is properly balanced when both blade tip adjustment gear(found immediately behind thehex measurements taken earlier are equal. capscrew justloosened) clockwise/up or Retighten the hex cap screw on the left deck counterclockwise/down. hanger bracket when proper adjustment is achieved.
- Page 20 Tighten the castle nut 11 inch-pounds, or until the improvement. If there isn't, contact an authorized brake arm has minimal up-and-down movement MTD Service Dealer in your area to have the when you attempt by hand to pivot it. transmissions '_ine-tune" adjusted.
- Page 21 SECTION 8: MAINTAINING YOUR LAWNTRACTOR IMPORTANT: Refer to the Briggs & Stratton Operator/ WARNING: Before performing Owner Manual packed with your unit for information maintenance repairs, always turn regarding the proper weight of motor oil. blades/PTO, move both control handles into neutral position, stop engine and remove key Air Cleaner before dismounting.
- Page 22 Rear Wheels The rear wheels should be removed from the axles once a season. Lubricate the axles and the rims well with an all-purpose automotive grease before re- installing them. Front CastorWheels Each of the front castor wheel axles and rims is equipped with a grease fitting.
- Page 23 IMPORTANT: The V-belts found on your tractor are Grasp the rearmost portion of the PTO idler bracket specially designed to engage and disengage safely. A and pivot it toward the discharge chute to relieve tension on the PTO belt. substitute (non-OEM) V-belt can be dangerous by not Remove the PTO belt from the electric PTO clutch disengaging completely.
- Page 24 Changing theTransmission D riveBelt WARNING: Be sure to shut the engine off, remove ignition key, disconnect the spark plug wire(s) and ground against the engine prior to removing the belt(s) 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.
- Page 25 A poorly balanced blade will cause excessive vibration Cutting Blades and may cause damage to the tractor and result in :_ersonal injury. WARNING: Be sure to shut the engine off, remove ignition key, disconnect the spark Blade Separation plug wire(s) and ground against the engine before removing cutting...
- Page 26 Always keep the battery cables and terminals clean WARNING: Batteries give off an explosive and free of corrosive build-up. gas while charging. Charge battery in a well After cleaning the battery and terminals, apply a ventilated area and keep away from an open light coat of petroleum jelly or grease to both flame or pilot light as on a water heater, space terminals...
- Page 27 Reposition transmission bypass rods. Drive belt damaged or broken. Replace drive belt. See an authorized MTD service dealer to have the Control cables damaged or snapped. control cables replaced. Tractor drifts to the left or right Control cables out of adjustment.
- Page 28 SECTION 1 3: MODEL 624PARTS LIST 13.,._ 11/17 "6...
- Page 29 Model624 REF. PART REF. PART DESCRIPTION DESCRIPTION 710-0376 731-0556 Plastic Cap Hex Cap Screw, 5/16-18 x 1.0 710-0599 736-0277 Flat Washer, 1.031 x 1.620 x .095 Self-tapping Screw. 1/4-20 x .5 710-0642 736-0345 Flat Washer, 1.010 x 2.0 x .065 Self-tapping Screw.
- Page 30 Model624 " 62 30 \, 9 16...
- Page 31 Model624 REF. PART REF. PART DESCRIPTION DESCRIPTION 683-0197 Lift Shaft Assembly 783-1047 Rear Access Plate 711-0332 Clevis Pin, .5 x .78 710-1268 Screw, #10-16 x .375 712-0206 Hex Nut, 1/2-13 712-3027 Hex Flange Lock Nut, 1/4-20 712-0431 720-0309A Flange Lock Nut, 3/8-16 Seat Adjuster Grip 712-3004A 731-1989...
- Page 32 Model624 Dash support portion shown for referenceon_y.
- Page 33 Model624 REF. PART DESCRIPTION 683-0317 RH Handle Bracket Assembly 683-0318 LH Handle Bracket Assembly 683-0320 Bail Assembly 710-0227 Self-tapping Screw, #8-18 x .5 710-0451 Carriage Screw, 5/16-18 x .75 710-0514 Hex Cap Screw, 3/8-16 x 1.0 710-0599 Self-tapping Screw, 1/4-20 x .5 710-0604A Self-tapping Screw, 16-18 x .625 710-0642...
- Page 34 Hook spring Model624 _Ro,._g_horo. > Suppod pSate shown for refsrenc8 onJy. Hook spring (Ref. 21) here.
- Page 35 Model624 REF. PART DESCRIPTION 618-0437 LH IZT Transmission 618-0438 RH IZT Transmission 631-0009A Knob 647-0051 Brake Lever Assembly 683-0251 Double-idler Bracket 683-0452A Brake Bracket Assembly 710-0347 Hex Cap Screw, 3/8-16 x 1.75 710-0378 Hex Cap Screw, 5/16-18 x 2.5 710-0604A Self-tapping Screw, 5/16-18 x .625 710-3011 Hex Cap Screw, 3/8-16 x 2.25...
- Page 36 Model624 Units Units Equipped Equipped w/46-inch w/42-inch Deck Deck...
- Page 37 Model624 REF. PART DESCRIPTION 683-0450 Engagement Plate Assembly 710-0520 Hex Cap Screw, 3/8-16 x 1.5 710-0831 Hex Cap Screw, 3/8-16 x 5.5 710-1238 Hex Head Washer Screw. 5/16-18 x .875 710-3144 Hex Cap Screw, 3/8-16 x 2.0 712-0229 Push Nut, 3/8 712-0431 Flange Lock Nut, 3/8-16 712-3004A...
- Page 38 Model624G ?_.. 2..,_...
- Page 39 Model624G REF. PART DESCRIPTION 16606 Retainer Hook 618-0565 Spindle Assembly, 5.75 Dia. 756-0980 Pulley Only 683-0198D 42-inch Deck Shell 683-0254 Deck Adjustment Bracket w/Weld 710-0136 Hex Cap Screw, 1/4-20 x 1.75 710-0520 Hex Cap Screw, 1/4-20 x 1.5 710-0528 Hex Cap Screw, 5/16-18 x 1.25 710-0604A Self-tapping Screw, 5/16-18 x .625 710-0751...
- Page 40 Model624H ® 3o.._ 29,,,_ r..-°...
- Page 41 Model624H REF. PART DESCRIPTION 16606 Retainer Hook 17982 Spindle Reinforcement Plate 618-0240A Spindle Assembly, 5.0 Dia. 756-1187 Pulley Only 618-0241 Double Pulley Spindle Assembly 756-0603 Pulley Only 683-0254 Deck Adjustment Bracket w/Weld 683-0265C 46-inch Deck Shell 710-0167 Carriage Screw, 1/4-20 x .50 710-0344 Hex Cap Screw, 3/8-16 x 1.5 710-0501...
- Page 42 Model624 (for choke) Briggs& Stratton IntekTwin (deflector must face forward) Briggs& Stratton IntekSingle (deflector must faceforward)
- Page 43 Model624 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 .625 710-1314 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 44 Model624 16 _...
- Page 45 Model624 REF. PART DESCRIPTION 625-0051 Bulb/Socket Headlight Assembly 629-0126 Wire Harness, Afterfire Solenoid, #18 x 5 629-0469A Wire Harness, Headlight 629-1055 Wire Harness, Main 629-1077 Wire Assembly, Reverse Jumper 629-1083 Wire Assembly, Ground Jumper 710-0227 Self-tapping Screw, #8-18 x ,5 710-0642 Self-tapping Screw, 1/4-20 x ,75 710-1823...
- Page 46 Model624 REF. PART DESCRIPTION 634-0210 Wheel Assembly Complete, 20 x 7 634-0209 Rim Only 734-0255 Air Valve 734-2018 Tire Only, 20.4 x 7.0 x 8.0 Turf Master 710-0180 Hex Cap Screw, 3/8-24 x .75 731-2290A Hub Cap 736-0356 Bell Washer, .391 x 1.38 x .062 736-0372 Flat Washer, .410 x 1.59 x .062 710-0604A...
- Page 47 NOTES...
- Page 48 MTD does not extend any warranty for products sold MTD warrants this product against defects in material and or exported outside of the United States of America, workmanship for a period of two (2) years commencing...