Troy-Bilt 682 Page 32 Operator'S Manual Download

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How to Measure the Belt Tension

Before taking a measurement, be sure the linkages and

pivot points on the Wheels/Tines/PTO Drive Lever are clean

and lubricated. If there is any binding, you won’t get true

measurements. Also, you’ll need the belt adjustment tool

you received with your new tiller. See Fig. 6-12.

Move the Wheels/Tines/PTO Drive Lever fully down to the

FORWARD position. The clutch roller at the bottom of the

lever should be positioned underneath the belt adjustment

block. See Fig. 6-13. Don’t let the clutch roller move during

the next few steps. If it moves, you’ll get a false belt tension

reading.

The belt tension is correct if the front of the clutch roller

is 1⁄4”-to-5⁄16” away from the face of the upright bracket

that holds the adjustment block in place. See Fig. 6-13. To

measure this distance:

Without moving the clutch roller, try inserting the

1⁄4”-thick, slotted end of the belt adjustment tool in

between the roller and the upright bracket. The flat

edge of the tool must be facing the roller. See Fig.

6-14.

If only the slotted portion of the tool will fit, the belt

tension is correct.
If the slotted part of the tool will not fit in, the belt is

too loose.
If the full thickness (5⁄16”) of the tool easily fits in, the

belt is too tight.

If the belt tension is correct, move the Wheels/Tines/PTO

Drive Lever back to NEUTRAL.

How to Adjust the Belt Tension

As described in the following steps, the drive belt tension

is adjusted by moving the adjustment block up or down.

Moving it down will tighten the belt; moving it up loosens

the belt.

NOTE:

The distance the block moves approximately equals

the distance the roller moves. In most cases, the clutch

roller will not have been very far out of position, so the

adjustment block will only need to be moved slightly (up

or down).
Move the Wheels/Tines/PTO Drive Lever to NEUTRAL

position. The clutch roller will come to rest anywhere on

the face of the belt adjustment block, depending upon

drive belt length and current belt tension adjustment.

Slotted End

Figure 6-14

4 m

5⁄16”

1⁄4”

6.35 mm

Belt Adjustment Tool

Figure 6-12

1⁄4” - 5⁄16”

Figure 6-13

ectiOn

6— M

aintenance

& a

djustMents

Summary of Contents for 682

Page 1: ...es Set Up Operation Maintenance Service Troubleshooting Warranty WARNING READ AND FOLLOW ALL SAFETY RULES AND INSTRUCTIONS IN THIS MANUAL BEFORE ATTEMPTING TO OPERATE THIS MACHINE FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY Rear Tine Tiller Model 682 Form No 769 03557 November 6 2007 ...

Page 2: ...ble to all models Troy Bilt LLC reserves the right to change product specifications designs and equipment without notice and without incurring obligation This product has met the rigid safety standards of the Outdoor Power Equipment Institute and an independent testing laboratory If you have any problems or questions concerning the machine phone a authorized Troy Bilt service dealer or contact us ...

Page 3: ...ng of Gasoline To avoid personal injury or property damage use extreme care in handling gasoline Gasoline is extremely flammable and the vapors are explosive Serious personal injury can occur when gasoline is spilled on yourself or your clothes which can ignite Wash your skin and change clothes immediately Use only an approved gasoline container Never fill containers inside a vehicle or on a truck...

Page 4: ...ading unloading transporting and storage of this machine Always refer to the operator s manual for important details if the machine is to be stored for an extended period 11 12 13 14 15 16 17 18 19 20 21 1 2 3 4 5 6 7 8 When practical remove gas powered equipment from the truck or trailer and refuel it on the ground If this is not possible then refuel such equipment on a trailer with a portable co...

Page 5: ...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 9 10 Average Us...

Page 6: ...at you have the items listed above contact your local dealer or the Factory if any items are missing or damaged Handle NOTE When disassembling the handlebar assembly keep the left side clamp and ratchet separated from the right side clamp and ratchet Disassemble the handlebar assembly To do this remove the height adjustment lever by turning the lever in a counterclockwise direction See Fig 3 1 Pla...

Page 7: ...he tiller forward and backward until the wheels move freely See Fig 3 2 Lift the Handlebars high enough to clear the tiller tines and pull back firmly to dislodge the tiller from the platform wheel wells Wire Harness Ground the green and red for electric start tillers wire s to the engine block See Fig 3 3 1 2 3 1 Connect the safety wire assembly green and yellow wires See Fig 3 4 Connect the till...

Page 8: ... bushing in place while inserting the screw through the lever and yoke plates See Fig 3 8 Install the star washer and the nut then hand tighten Retrieve the clutch pawl spring from hardware bag Remove the temporary screw from the forward holes inserted in Step 3 and move the Wheels Tines PTO Lever fully forward Install the wider hook end of the clutch pawl spring down into the small hole at the en...

Page 9: ...h the lever down until it engages in the Forward position The clutch roller must rest beneath the adjustment block Next move the lever up to the Neutral position See Fig 3 11 6 7 To test Reverse lift and hold the lever all the way up in the Reverse position then let it go The lever should automatically return to the Neutral position See Fig 3 12 If not do not use the tiller See your local authoriz...

Page 10: ... all steps and observe all accompanying safety messages The Maintenance Adjustments section contains other general battery maintenance and recharging instructions warning Battery produces explosive gases Keep away sparks flames and cigarettes Ventilate area when charging or using battery in an enclosed space Make sure battery vent tube is always open after battery is filled with acid warning Remov...

Page 11: ...secure with screw and nut See Fig 3 14 Slide the black rubber boot completely over the battery post and cable connector See Fig 3 14 3 4 5 6 Set Up Tires For shipping purposes the tires may be overinflated Check the air pressure in each tire and adjust them to between 10 and 20 pounds per square inch You must inflate each tire to equal air pressures to prevent the tiller from pulling to one side G...

Page 12: ...rlock Levers The Forward Interlock Levers are attached under the handlebar grip and will stop the engine if both levers are released Wheel Speed Lever The Wheels speed lever controls the speed at which the wheels spin Tines PTO Clutch Lever The Tines PTO Clutch Lever is used to engage or disengage power to the transmission Depth Regulator Lever The Depth Regulator Lever is used to regulate the til...

Page 13: ...tically move into NEUTRAL position Put the Depth Regulator Lever in the Travel position lever all the way down so that the tines are off the ground To do this lift up on the handlebars pull the lever back and push it down all the way to the top detent notched position Move the Wheel Speed Lever to either the SLOW or FAST position Be sure to roll the wheels while shifting the lever until the wheels...

Page 14: ...Wheels Tines PTO Drive Lever into NEUTRAL position and then release both Forward Interlock Levers Move the engine Throttle Lever to the STOP position Then on electric start models turn the key to OFF Remove the key for safekeeping NOTE The engine may have a separate Throttle Control Lever and ON OFF switch on the engine These controls can also be used to stop the engine See the Engine Operator s M...

Page 15: ...ls Tines PTO Drive Lever all the way up and hold You do not need to squeeze the Forward Interlock Levers to use reverse The tiller immediately engages in reverse Periodically check behind you while holding the handlebars up and the Wheels Tines PTO Lever in its upper most position Stopping Reverse Motion Release the Wheels Tines PTO Drive Lever the lever automatically returns to the NEUTRAL positi...

Page 16: ...ertilizers manure 1 2 3 4 5 6 7 8 SLOW GEAR HIGH BELT RANGE For Tilling in sod or hard clay Tilling under standing cornstalks slow steady speed allows time to shred stalks Tilling under cover crops best wheel speed and belt speed range in most soils Preparing seedbeds best speed choice in most soils Tilling in stony ground Building raised garden beds Mixing in fertilizer Using tiller wings in hard...

Page 17: ...ler to finish seating the belt onto the pulley groove 1 2 3 4 Working from the left side of the tiller work the belt as much as possible onto the top front engine pulley groove See Fig 4 8 Finish seating the belt from the right side of the tiller NOTE Proper belt tension is important for good performance See the Maintenance Adjustment Section for instructions on adjusting belt tension NOTE If extr...

Page 18: ... the Work While tilling relax and let the wheels pull the tiller along while the tines do the digging Walk on the side that is not yet finished to avoid making footprints in the freshly tilled soil and lightly but securely grip the handlebar with just one hand Refer to Fig 4 3 Avoid pushing down on the handlebars in an attempt to force the tiller to dig deeper Doing so takes the weight off the pow...

Page 19: ...ibute to soil erosion They can also plant unwanted weed seeds back into the newly tilled soil Suggested Tilling Patterns When preparing a seedbed go over the same path twice in the first row then overlap one half the tiller width on the rest of the passes See Fig 4 11 When finished in one direction make a second pass at a right angle See Fig 4 12 Overlap each pass for best results In very hard gro...

Page 20: ...r the best results use the HIGH belt range and SLOW wheel speed lever position See Changing Speed Belts in this section for more information on changing to high range 1 2 Terrace Gardening When a slope is too steep or too short for vertical tilling it may be necessary to till across the slope and create terraced rows Terraces are rows that are cut into the side of a slope creating a narrow but fla...

Page 21: ... the same space that is normally set aside for an area that has narrow single rows Wide row planting automatically shades the ground which keeps weed growth down and also holds moisture in the soil And of course harvesting is much easier everything is right at hand to be picked Preparing wide rows is easy after you prepare the seedbed and mark off the rows with string hand broadcast the seeds as i...

Page 22: ...er optional attachments See Fig 4 18 The following instructions will familiarize you with your PTO Power machine Please read these pages carefully The following steps explain how to remove and replace the tine attachment You will need a 3 4 wrench minimum 12 long for leverage NOTE Before operating your PTO Power machine for the first time make sure that you have Read all the safety instructions in...

Page 23: ...ctive wrapping from the dog clutch coupling on the tine attachment Carefully align the guide pin on the PTO Power Unit with the alignment hole in the tine attachment and bring the two units together See Fig 4 23 Move the two swing bolts into the slots of the tine attachment Alternately tighten each bolt until they are tight enough to make the concave washers flat The bolts must be very tight if yo...

Page 24: ...ing vehicle so that the ramp angle is as flat as possible the less incline to the ramp the better Loading the Tiller Use loading ramps that are strong and wide enough to safely hold the weight of the tiller and the operator combined your tiller weighs between 280 and 325 lbs Move the Tines PTO Clutch Lever into DISENGAGE position Set the Depth Regulator lever to the Travel position Move Wheel Spee...

Page 25: ... After 2 hour Break In Before Each Use Every 10 Hours Every 25 Hours Every 30 Hours Refer to En gine Manual Check Engine Oil Level P Clean Engine Cooling System P Test Operation of FWD Interlock Safety System FWD Interlock Safety System Check Wire Condition Connections P P Check Electrical Connections P Recharge Battery Check Drive Belt Tension P P Check Nuts and Bolts P P P Clean Tiller Tine Shaf...

Page 26: ...he tine shaft apply fresh grease to the tine shaft Wheel Shaft Maintenance After every 10 operating hours remove the wheels and clear away dirt and debris that has accumulated on the wheel shaft Please follow this maintenance recommendation as debris can cause premature wear to the wheel shaft and its oil seals Prop the transmission up with a sturdy block to raise the wheels off the ground Remove ...

Page 27: ...ntric shifting lever See Fig 6 3 Do not tighten the locknut against the eccentric lever It should be very close to but not touching the lever Tine Hardware Check the four bolts and nuts securing left and right tine holders to the tine shaft See Fig 6 4 Transmission Gear Oil Checking for oil leaks At 25 hour operation intervals check the tiller for oil leaks Inspect for oil accumulations on the til...

Page 28: ... hot weather the gear oil may heat up and expand inside the transmissions To allow for this oil expansion both the power unit transmission and the tine attachment transmissions have oil relief vents See Fig 6 5 The vents allow small amounts of oil to seep out If a serious leak is discovered please contact your authorized dealer or the Factory Technical Service Department for service advice Checkin...

Page 29: ... partial fill ups just a few ounces or less use SAE 140 SAE 85W 140 or SAE 80W 90 weight gear oil with an API rating of GL 4 or GL 5 For full replacement use SAE 140 or SAE 85W 140 gear oil with an API rating of GL 4 only At the factory SAE 85W 140 weight gear oil is used NOTE Do not use automatic transmission fluid or engine oil They are too light in weight and will result in transmission damage ...

Page 30: ... the gear oil has drained reinstall the housing cover screw securely first coat its threads with non hardening gasket sealant Be certain to refill the transmission with the correct amount of gear oil before operating the tiller again Forward Interlock System The wiring circuit for the Forward Interlock Safety System is designed to ground out the engine s ignition system There are three switches in...

Page 31: ...Handlebar Height Adjustment Lever Figure 6 10 Keep the PTO access area well greased See Fig 6 11 If the Tines PTO Clutch Lever becomes hard to move squirt some oil into its access hole and work it back and forth to disperse the oil Adjustments Drive Belt On a new tiller or if a new belt is installed the belt tension will probably need to be adjusted after the first two 2 hours of operation Thereaf...

Page 32: ... of the tool must be facing the roller See Fig 6 14 If only the slotted portion of the tool will fit the belt tension is correct If the slotted part of the tool will not fit in the belt is too loose If the full thickness 5 16 of the tool easily fits in the belt is too tight If the belt tension is correct move the Wheels Tines PTO Drive Lever back to NEUTRAL How to Adjust the Belt Tension As descri...

Page 33: ... in the adjustment block Check the tension on the belt by following the previous instructions How to Measure Belt Tension NOTE If the adjustment block is all the way down and the measurement between the clutch roller and the bracket is less than 1 4 then a new drive belt is needed Reverse Drive System These instructions explain how to inspect and adjust the various reverse drive components But fir...

Page 34: ...ng and plunger assembly is designed to prevent the reverse disc from making contact with the transmission pulley until you shift into REVERSE When the lever is in NEUTRAL the switch body on the bottom of the engine mount tab should be resting squarely on top of the reverse adjustment bolt See Fig 6 19 The reverse adjustment bolt can be adjusted up or down to correct a number of reverse drive opera...

Page 35: ...g the Reverse Drive Place the Wheels Tines PTO Drive Lever in FORWARD position On the left side of the tiller put a 1 2 wrench on the plunger retaining bolt and another 1 2 wrench on the jam nut next to it See Fig 6 22 While holding the bolt steady loosen the jam nut counterclockwise until it touches the bolt head Turn the bolt in until it tightens against the plunger inside the spring The bolt mu...

Page 36: ...p maintenance on this system other than adjusting or replacing the spark plug Spark Plug The spark plug must be in good condition for proper engine operation Remove and inspect the plug every 50 operating hours or annually whichever occurs first The correct electrode gap is 030 Check the gap with a feeler gauge Do not use a spark plug if the porcelain is cracked the electrodes are pitted or burned...

Page 37: ... 1 2 3 4 Lift the top half of the belt up and over the upper pulley and the rubber reverse disc moving it in front of the reverse disc See Fig 7 3 Push the Wheels Tines PTO Drive Lever down into the FORWARD position This increases the distance between the upper and lower pulleys Next lift and pull the entire belt out from between the pulleys See Fig 7 4 Place the Wheels Tines PTO Drive Lever in FO...

Page 38: ...c If your tiller has a Bumper Attachment mounted it must be removed first Move Wheels Tines PTO Drive Lever in NEUTRAL position Wedge a 5 16 thick board between top of engine pulley and cast iron housing next to it This immobilizes pulley Avoid contacting reverse disc 9 10 11 12 13 14 15 1 2 Use a 9 16 wrench to loosen the mounting bolt shown in Fig 7 6 Remember to immobilize the pulley with the w...

Page 39: ...it is rusted or hard to remove Mount the new tine exactly the way the old tine was positioned The sharp edge of the tine which enters the soil first must face forward when above the tine shaft Replace the bolts and nuts and tighten them securely Replacing A Tine Holder Assembly The 16 Bolo Tines are mounted eight per side on left side and right side tine holders Here s how to replace the tines and...

Page 40: ...thorized service dealer Charge battery Contact authorized service dealer 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Engine runs poorly or overheats Broken flywheel fins under engine shroud Water or dirt in gasoline or carburetor Carburetor out of adjustment Defective or incorrectly gapped spark plug Loose or cracked carburetor Governor linkage not adjusted properly or binding Check pan gasket engine seals a...

Page 41: ...does not stay in forward Drive belt too tight Clutch Pawl spring overstretched 1 2 See Maintenance Adjustments Section Replace spring 1 2 Wheels Tines PTO Lever hard to shift into reverse Worn reverse disc Motor mount bars sticking 1 2 Replace reverse disc Lubricate mount bars 1 2 Tiller stays in reverse or forward when Wheels Tines PTO Lever is released or lever is hard to shift Motor mount bars ...

Page 42: ...42 04118 Bolo Tine RH 12 634 04231 Wheel 16 x 4 6 x 8 756 04171 Reverse Disc 1909286 Throttle Cable Phone 800 800 7310 to order replacement parts or a complete Parts Manual have your full model number and serial number ready Parts Manual downloads are also available free of charge at www mtdproducts com ...

Page 43: ...Notes 11 43 ...

Page 44: ...anty Refer to applicable manufactur er s warranty for terms and conditions b Log splitter pumps valves and cylinders have a separate one year warranty c Routine maintenance items such as lubricants filters blade sharpening tune ups brake adjustments clutch adjustments deck adjustments and normal deterioration of the exterior finish due to use or exposure d Service completed by someone other than a...

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