[

Before inspecting, cleaning or servicing the machine, shut off engine, wait for all moving parts to come to a complete stop, disconnect spark plug wire and move wire away from spark plug. J

Remove the key from the keyswitch on units so equipped.

J

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

pull down on the belt and roll it onto the large, forward-most groove of the trans- mission pulley (P, Figure5-20).

7.Reinstall the belt cover.

8.Testfor correct tension on the forward clutch belt (see CheckingForward Belt Tension).

REVERSE CLUTCH BELT REMOVAL

AND REPLACEMENT

Figure5-22: Right-side view.

The reverseclutch belt (J, Figure5-22) is driven by the enginedrive pulley (I, Figure 5-20). When the ReverseClutch Control knob is pulled out, it pulls the reverse idler arm and pulley (N) which tightens the belt against the engine drive pulley. This drives the transmission drive pulley (L), resulting in reversemotion.

RemovingReverse ClutchBelt

1.Stop engine, allow it to cool and dis- connect spark plug wire before working nearbelts. Also remove ignition key on electric start models.

2.Remove belt cover (Figure 5-13) by removing two flange Iocknuts.

3.Pullthe reverseclutch belt downward and slip it off the transmission pulley (L, Figure 5-22).

4.Usetwo 1/2" wrenches to loosen and

remove wire belt guide (R, Figure5-22)

from the reverse idler arm pulley. Do not remove Iocknut and screw.

5.Removethe reversebelt and pull it out through front of transmission housing.

Installing Reverse ClutchBelt

1.Stop engine, allow it to cool and dis- connect spark plug wire before working near belts. Also remove ignitionkeyon electric start models.

IMPORTANT:The forward clutch belt must be installed before the reverse clutch belt.

2.Install the forward clutch belt (see Installing Forward Clutch Belt in this section) before installing reversebelt.

IMPORTANT:The reversebelt has a 'V" shape. When installing the belt, make sure that the widest (flat) side of the belt rides againstthe reverseidler pulley (N, Figure 5-22) and transmission pulley (L). If needed,the belt can betwisted "inside out" so that the "V" shaped side is on the outside and the widest side is on the inside.

3. Insert the belt down into the front of the transmission housing. Slip the top half of the belt onto the reverseidler arm pulley (N).

4.Pull the belt downward and loop the bottom half of belt around the front groove of transmission pulley (L, Figure 5-22).

5.Mount the belt guide betweenthe two flat washers and tighten snugly. The guide needs adjusting before fully tightening.

Figure 5-23: Reverse belt guidepositioning.

6.(You will needan assistant to help with this step.) Pull the reverse idler pulley (N) up to its highest point and position the belt guide (R) horizontally levelas shown in Figure5-23. Securely tighten the screw and lock nut (M, Figure 5-22).

7.Pull back on the ReverseClutch Control knob and makesure that the

reverseclutch belt fully contacts the

groove in the enginepulley. Releaseknob and make sure that the belt doesn't

engagethe reverseengine pulley. This may causethe unit to move in reverse when the Wheel GearLever is engaged. Adjust the cablefor less tension if this condition occurs. See Checkingand Adjusting Reverse Belt Tensionfor more information.

8.Reinstall the belt cover and secure it with two flange Iocknuts.

9.Test the unit in an open location.

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Troy-Bilt 664D, E666M Reverse Clutch Belt Removal Replacement, RemovingReverse ClutchBelt, Installing Reverse ClutchBelt

E666M, 664D specifications

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