Section 4 - REPAIR & ADJUSTMENTS

WARNING

DO NOT attempt any maintenance, adjustments or service with engine and blade running. STOP engine and blade. Disconnect spark plug wire and secure away from spark plug. Engine and components are HOT. Avoid serious burns, allow sufficient time for all components to cool.

4.4.1.Engine Drive Belt Replacement (Stretch Type Belts)

(Continued From Previous Page)

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

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.

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 4.17.

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

4. Work belt onto top of idler pulley.

5. Twist belt sideways and pull it upward between the differential bracket and driven pulley and then down into the pulley groove. Make sure the Poly-V Belt is above belt guide. See Figure 4.17.

person may be necessary to hold mower in the tilted

position.

DRIVE

IDLER

PULLEY DIFFERENTIAL BRACKET

5.

Hold the slotted end of the drive disc bolt with a

screwdriver and remove the nut and internal tooth

lock washer. See Figure 4.16.

6.

Remove the belt cover located under deck.

7.

Lift the drive disc up and remove worn belt.

8.

Loop one end of new belt over engine pulley and

insert the other end through slot in deck. See Figure

4.15.

 

PULLEY POSITION

DRIVE DISC

SLOT IN END

OF DRIVE DISC

BOLT

 

BUSHING

DECK BRACKET

BOLT RETAINER

 

(PARTIALLY SHOWN)

 

 

INTERNAL TOOTH

 

LOCKWASHER

 

NUT

PULLEYPOLY-V

BELT

HEX SHAFT

BELT GUIDE

DRIVEN

 

PULLEY

ROUTING OF POLY-V BELT

FIGURE 4.17

FIGURE 4.16

18

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Image 18
Snapper 2167517BV, P2167517BV, P2167517BVE, WP2167517BV important safety instructions Pulley Position
Page 17 Page 19

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