Pulley Position

Section 4 - REPAIR & ADJUSTMENTS

WARNING

Before attempting any adjustments or repairs, STOP the engine, remove the spark plug wire from the spark plug and secure wire away from plug.

4.4.1.Engine Drive Belt Replacement (Stretch Type Belts)

(Continued From Previous Page)

DRIVE DISC

SLOT IN END OF DRIVE DISC

BOLT

BUSHING

IMPORTANT: Drain fuel tank before tipping mower. DO NOT tip machine with carburetor or spark plug down. Oil from crankcase will saturate the air filter and cause the engine to be hard to start or not start at all. If contamination does occur, the air filter will have to be replaced.

3. Remove the driven disc. Refer to Section

“Replacing Rubber Driven Disc” for driven disc

assembly removal procedure.

4. Tilt mower up on its rear wheels and remove

blade and blade hub. Assistance from another

person may be necessary to hold mower in the tilted

position.

5. Hold the slotted end of the drive disc bolt with a

screwdriver and remove the nut and internal tooth

lock washer. See Figure 4.17.

6. Remove the belt cover located under deck.

DECK BRACKET

(PARTIALLY SHOWN)

BOLT RETAINER

LOCK WASHER

NUT

FIGURE 4.17

4.4.2.Transmission Poly-V Belt Replacement 1. Remove the driven disc. Refer to Section on “Replacing Driven Disc Rubber Ring” for procedure. 2. Note the routing of the old belt around the three pulleys before removing it. See Figure 4.18.

7.	Lift the drive disc up and remove worn belt.
8.	Loop one end of new belt over engine pulley and

DRIVEN

IDLER

PULLEY DIFFERENTIAL BRACKET

insert the other end through slot in deck.

9. Loop the belt around the pulley on the bottom of

the drive disc.

10. Reinstall drive disc and retaining hardware.

IMPORTANT: 1) The square shoulder of the drive

disc bolt must fit into the square hole of the bushing.

2) The square end of bushing must fit into the

bracket slot.

11. Reinstall belt cover and tighten bolts securely.

12. Reinstall blade hub and cutter blade.

Recommended torque for blade cap screw is 40 ft. lbs.

PULLEYPOLY-V

BELT

HEX SHAFT

BELT GUIDE	DRIVE
	PULLEY

ROUTING OF POLY-V BELT

FIGURE 4.18

3.Place new Poly-V Belt over end of hex shaft and onto driven pulley.

4.Work belt onto top of idler pulley.

5.Twist belt sideways and pull it upward between the differential bracket and drive pulley and then down into the pulley groove. Make sure the Poly-V Belt is above belt guide. See Figure 4.19.