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Service - Belts


Removing Drive Belts


M60560

1. Loosen bolt (A) and cover.


MX11273

2. Loosen two nuts (B) and bolts (on front of engine).


M60581

3. Loosen two nuts (C) and bolts (on back of engine).


MX11275

4. Loosen two bolts (E) securing the belt guide (D).

5. Move engine forward and remove belts.

Installing Belts

1. Place belts on engine sheave and gear case sheave.

2. Move engine rearward to tension belts. Engine sheave must be aligned with driven sheave.

3. Tighten four engine nuts.

4. Check belt adjustment.


MX11275

5. Adjust belt guide (D) using two bolts (E). There must be a clearance of approximately 1mm (0.040-in.) between belt and guide when clutch is engaged.

NOTE: Belt guide helps prevent movement when clutch is disengaged.

6. Install shield.

Drive Belt Tension Check and Adjustment

When properly adjusted, with engine OFF and clutch in NEUTRAL, machine should move freely. With clutch ENGAGED, traction roller should not move.

When properly adjusted, with engine ON and set at low idle, brake OFF and clutch in NEUTRAL, machine should not move. With engine ON and set at low idle, brake OFF, clutch ENGAGED and holding machine by handlebars, transport wheels should spin on gravel or concrete surface. With engine ON, brake OFF, clutch ENGAGED, unit should propel itself up an incline.

Check Procedure

1. Park machine on a level surface.

2. Move RUN/OFF switch to OFF position.

3. Move travel clutch lever to NEUTRAL position.

4. Pull the machine backward: transport wheels and roller should turn freely.

• If transport wheels and roller turn freely, proceed to next step.

• If transport wheels or roller do not turn, adjust belt tension.

5. Move clutch lever to ENGAGED position.

6. Pull the machine backward: transport wheels and roller should not turn.

• If transport wheels or roller turn, or excessive force is required to engage clutch, adjust belt tension.

• If transport wheels and roller do not turn, proceed to next step.

7. Move clutch lever to DISENGAGED position.

8. Start engine and run at low idle. The machine should not move forward. If it does, adjust belt tension.

9. With engine running at low idle, hold machine by the handlebars to prevent it from moving. Release the brake and engage the clutch.

• If transport wheels spin on gravel or concrete, belt is properly adjusted.

• If transport wheels will not spin on gravel or concrete, belt adjustment is required.

Adjustment Procedure

Depending on the results in the check procedure in the previous steps, either a COARSE or FINE adjustment might be required.

• A coarse adjustment involves movement of the engine. If the machine moves quickly in NEUTRAL or if the machine will not spin the tires, a coarse adjustment is likely to be required.

• A fine adjustment involves adjustment of the cable. If the machine creeps while running at low idle in NEUTRAL, a fine adjustment is likely to be adequate.

1. Park machine on a level surface.

2. Move RUN/OFF switch to OFF position.

3. Move travel clutch lever to NEUTRAL position.


MX6008

4. Remove cap screw (A) and drive belt cover (B).

5. Go to “Determine Type of Adjustment Required”.

Determine Type of Adjustment Required


MX6020

1. Center jam nuts (A) on upper cable ferrule.


MX6071


MX14815

2. Adjust the lower cable anchor (B) to achieve 1-3 mm (0.039-0.118 in.) clearance (C) between the idler and the belt cover support.


MX14816

3. With the machine OFF, compress both drive belts. The distance (D) between the bottom of the idler and the top of the belt should be 12-18 mm (0.472-0.709 in.).

• If distance is not correct, proceed to “Coarse Adjustment Procedure”.

• If distance is correct, proceed to “Fine Adjustment Procedure”.

Coarse Adjustment Procedure


MX6009

Picture Note: Front of Engine


M83761

Picture Note: Rear of Engine

1. Loosen engine mounting bolts (A).

2. Slide engine forward (loosen belt) or rearward (tighten belt) to adjust belt tension until the distance between belts and idler is correct. (See “Determine Type of Adjustment Required”.)

IMPORTANT: Avoid damage! Engine PTO sheave and differential gear case sheave MUST align.


3. Use a straightedge to verify that sheaves are aligned.

4. Tighten engine mounting bolts.

5. Proceed to “Fine Adjustment Procedure”.

Fine Adjustment Procedure


MX6020

1. Loosen upper cable jam nuts (A) and lengthen (decrease belt tension) or shorten (increase belt tension) ferrule length to change belt tension.

2. Tighten jam nuts to 11 N•m (96 lb-in.).

3. Repeat check procedure. (See “Check Procedure”.)

4. If adjusting upper cable is not adequate, proceed to next step.

5. Center jam nuts (A) on upper cable ferrule.


MX6071

6. Loosen jam nuts (B).

7. Lengthen (decrease belt tension) or shorten (increase belt tension) ferrule length to change belt idler tension.

8. Tighten jam nuts to 11 N•m (96 lb-in.).

9. Repeat check procedure and readjust as necessary. (See “Check Procedure”.)

10. Install drive belt cover.

Adjusting Belt Guide

1. Stop engine and wait for all moving parts to stop rotating.


MX11251

2. Remove belt shield (A).

3. Make sure drive belts are properly tensioned.


MX11234

4. Move the clutch lever (B) forward to the engage position.


MX11275

5. Adjust belt guide:

• Loosen two bolts (C).

• Adjust belt guide (D) until there is a 1mm (0.040-in.) clearance between drive belts and guide.

• Tighten bolts (C).

• Disengage clutch lever (B).

• Install belt shield.

Adjusting Operator Presence Bail

NOTE: Cover removed for clarity of photo only.


M86640

1. Loosen two nuts (A).


M86642

2. Position the bail (B) to the loop handlebar (C).


M86641

3. Rotate the engagement arm (D) upward as far as possible.

4. Tighten two nuts (E).

5. Check bail for proper operation. When bail is released, engagement arm (D) must fully engage clutch lever linkage (F).