Servicing Fan Belt

CAUTION: Rotating parts can catch fingers, loose clothing, or long hair. Wait for engine and all moving parts to stop before leaving operator’s station to adjust or service machine.

Checking Belt Tension

1. Park machine safely. (See Parking Safely in the SAFETY section.)

2. Allow engine to cool.

3. Raise hood.

4. Apply moderate thumb pressure to belt between driveshaft sheave and fan pulley. Belt should deflect inward the specified distance.

   Item	Measurement	Specification
   Engine Fan Belt	Deflection	13 mm (1/2 in.)

5. Adjust belt tension if deflection is more or less than specified.

Adjusting Belt Tension and Replacing Belt

1. Disconnect wires from spark plugs on both sides of machine.

2. NOTE: Rotate driveshaft for access to bolts, if necessary.

   
   MXAL42737-UN-22MAR13

   Remove three bolts (A) to disconnect drive shaft (B).

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3. Remove three bolts (C) to remove outer sheave (D).

4. Remove belt (E) if it is to be replaced.

5. NOTE: To allow sheaves to fit closer together and increase belt tension, remove shim (F). Save shim for future use.

   Remove shim (F) if belt is to be tightened. Leave shim in if installing a new belt.

6. Loosely install belt between sheave halves and start installing the three outer sheave-retaining bolts.

7. Rotate sheave assembly as bolts are tightened to allow belt to center in sheave halves and not be pinched in an off-center position.

8. Install driveshaft.

9. Connect spark plug wires.

10. Lower hood.