Troy-Bilt 665B manual Checking and Adjusting Forward Clutch Belt Tension

Page 19

Section 5: Maintenance 19

WARNING

Before inspecting, cleaning or servicing the machine, shut off engine, wait for all moving parts to come to a complete stop, remove ignition key on electric start models, disconnect spark plug wire and move wire away from spark plug.

Failure to follow these instructions can result in serious personal injury or property damage.

CHECKING AND ADJUSTING TENSION ON CLUTCH BELTS

WARNING

Follow the belt adjustment instructions carefully. An incorrect adjustment could result in the clutch control mechanism engaging too soon. This could cause loss of tiller control and result in per- sonal injury or property damage.

Maintaining correct belt tension is impor- tant to good tilling performance and long belt life. A loose belt will slip on the engine and transmission pulleys and cause the tines and wheels to slow down

–or stop – even though the engine is running at full speed. A loose belt will also result in premature belt wear.

While checking belt tension, also check for cracks, cuts or frayed edges. A belt in poor condition should be replaced.

Tension on a new forward clutch belt (C, Figure 5-8) should be checked after the first two (2) hours of operation and after every ten (10) hours of operation.

C

Figure 5-8: Forward clutch belt. (C, Left- side view, no belt cover.)

The reverse clutch belt (D, Figure 5-9), because it is used more sparingly, may not require tension adjustment until a sig- nificant number of operating hours has passed. A tension adjustment is required only if there is little or no reverse move- ment when the Reverse Clutch Control knob is pulled out.

D

Figure 5-9: Reverse clutch belt. (D). (Right-side view, no belt cover.)

Checking and Adjusting

Forward Clutch Belt Tension

It is important to maintain correct tension on the forward clutch belt. A loose belt will cause the tines and wheels to slow down – or stop completely – even though the engine is running at full speed. A loose belt will also result in premature belt wear.

•Check belt tension after the first two hours of break-in operation and after every 10 operating hours.

•At the end of each tilling season, check the belt for cracks, cuts or frayed edges. A belt in poor condition should be replaced.

CAUTION

Incorrect cable adjustment could cause the wheels and tines to rotate unexpect- edly. Follow adjustment procedures carefully. Failure to do so could result in personal injury or property damage.

Checking Forward Belt Tension

1.Before checking, shut off engine, allow the engine and muffler to cool down, dis- connect the spark plug wire, remove the ignition key on electric start models.

2.The coiled part of the forward clutch spring (E, Figure 5-10) measures 2" in length when the Forward Clutch Control levers are not pulled up. Pull either Forward Clutch Control Lever up against the handlebar and measure the length of the coil on the forward clutch spring. Tension is correct if the length of the

extended coil is 2-1/2" (see Figure 5-11). The forward clutch control cable needs adjustment if the extended length of the coil is not 2-1/2". See Adjusting the Forward Clutch Belt for a procedure.

Adjusting the Forward Clutch Belt

Do this procedure if the forward clutch spring measurement is not correct (see Checking Forward Belt Tension)

1.Before adjusting the belt tension, shut off engine, allow the engine and muffler to cool down, disconnect the spark plug wire, and remove the ignition key on elec- tric start models.

2.Belt adjustments are done with the forward clutch cable adjuster (F, Figure 5- 10). Use two 1/2", open-end wrenches to loosen the two jam nuts (A, Figure 5-12) a few turns.

E

F

Figure 5-10: Location of forward clutch cable spring (E) and forward cable adjuster (F).

3.Move cable adjuster (B, Figure 5-12) downward for more belt tension (see Figure 5-12).

4.Hand tighten the jam nuts and pull the Forward Clutch Control levers up against the handlebar. Measure the coiled part of the spring (Figure 5-11). The length of the extended coil should be 2-1/2". Repeat this procedure until the extended spring length is correct.

5.Tighten both jam nuts securely.

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Contents Operator’s Manual Table of Contents Operation Safety Alert SymbolTraining PreparationUse slower engine speeds Maintenance and StorageTo Avoid Serious Injury DecalsAttach Handlebars Hardware BAG Parts ListIntroduction Inspect UnitAttach Forward Clutch Control Cable Attach Reverse Clutch Control CableSecure the wheel gear cable Check AIR Pressure in TiresADD Motor OIL to Engine Attach Wheel Gear LeverForward Clutch Control Levers IntroductionWheel Gear Lever Reverse Clutch ControlEngine Controls To Adjust the Handlebar HeightRetighten the two screws at the ends of the handlebar Starting the Engine PRE-START ChecklistBREAK-IN Operation STARTING/STOPPING EngineEngaged Switch to the OFF positionOperating the Tiller Stopping the EngineLengthwise and then crosswise Tiller along while the tines doYour freshly tilled or cultivated soil Unwanted weed seeds back into Till Freshly tilled groundTilling Up and Down Slopes Vertical Tilling Read the following recommendations before tilling on slopesTerrace Gardening Loading and Unloading the Tiller Clearing the TinesMaintenance Schedule Engine Cleaning CARBURETOR/GOVERNOR Control Adjustments Engine OIL ServiceAIR Cleaner Service Spark Plug ServiceBolo Tines OFF Season StorageChecking and Adjusting Tension on Clutch Belts Checking and Adjusting Forward Clutch Belt TensionRemoving Forward Clutch Belt Checking and Adjusting Reverse Clutch Belt TensionRemoving Reverse Clutch Belt Installing Forward Clutch BeltROW Marker Model OEM-290-257 Installing Reverse Clutch BeltOr pulley HILLER/FURROWER Model OEM-290-250Problem Possible Cause Correction TroubleshootingDrawing no Description Parts List Drawing noPart Description GW-9621 Oil Seal 1909950 Reverse Clutch Cable 4020 Part Description Main Drive Shaft Assembly Input Pinion Shaft & Gear AssemblyEnd play on drive shaft 712-0375 1904522001 OEM-290-254Bumper OEM-290-254 Row Marker Attachment option OEM-290-257GW-9621 Page TROY-BILT Tiller Lifetime Limited Warranty
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665B specifications

Troy-Bilt is a trusted name in outdoor power equipment, and their line of tillers, including the E666M, 664D, and 665B models, exemplifies their commitment to quality and practicality. These tillers are designed to make soil preparation easier and more efficient, catering to both amateur gardeners and seasoned landscapers alike.

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