Lockwasher

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

3.Remove the driven disc. Refer to Section on “Replacing Driven Disc RubberRing” for driven disc removal procedure.

DRIVE

DISC

SLOT IN END

	OF DRIVE	POSITION SCRAPER
	OF DRIVE	TO CLEAR “V” OF
	DISC BOLT	TO CLEAR “V” OF
	DISC BOLT	PULLEY
		PULLEY
	BUSHING

	IDLER
	ARM	BOLT
		BOLT
	IDLER	RETAINER
	IDLER	INTERNAL TOOTH
	SPRING	INTERNAL TOOTH

IDLER

SPRING

RIGHT WHEEL BRACKET

PULL SPRING THROUGH

LARGE HOLE & HOOK

INTO SMALL HOLE

FIGURE 4.18

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 4.19.

DECK BRACKET

(PARTIALLY

DRIVEN

IDLER

PULLEY DIFFERENTIAL BRACKET

SHOWN)	NUT
SHOWN)
	FIGURE 4.17

4.Do not tilt mower with spark plug or carburetor down. 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.Lift the drive disc off the idler arm and remove worn belt.

7.Loop one end of new belt over engine pulley and insert the other end through slot in deck. See Figure

8.Loop the belt around the pulley on the bottom of the drive disc.

9.Reinstall drive disc and retaining hardware.

10.Reinstall blade hub and cutter blade. Recom- mended torque for blade cap screw is 30 to 40 ft. lbs.

11.Use a stiff wire, such as a coat hanger, with a hook fashioned on one end to pull the hooked end of the idler spring through the large hole in the right wheel bracket. See Figure 4.18.

12.Reinstall the driven disc assembly.

PULLEYPOLY-V

BELT

HEX SHAFT

BELT GUIDE	DRIVE
	PULLEY

ROUTING OF POLY-V BELT

FIGURE 4.19

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. Refer to Figure 4.19.