Adjusting Main Drive Belt Tension

Initial Tension Adjustment

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A - Door

1. Open door (A).

2. 
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   A - Nuts

   Adjust nuts (A) until spring dimension (inside of hook-to-inside of hook) is within specification.

   Item	Measurement	Specification
   Inside of Hook-to-Inside of Hook	Distance	275 ± 10 mm (10.827 ± 0.394 in.)

   If adjustment nuts reach end of travel (no more threads on eye bolts), the fixed idler inside main drive belt compartment can be moved to increase tension on main drive belt.

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3. Close door.

Final Tension Adjustment

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A - Rear Cover

B - Door

C - Flange-Head Bolts and Nuts (5 used)

D - Flange-Head Bolts and Nuts (8 used)

1. Remove flange-head bolts and nuts (C) and (D).

2. Open door (B).

3. Remove rear cover (A).

4. 
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   A - Fixed Idler

   B - Idler

   Loosen nuts to relieve spring tension on idler (B).

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5. Loosen nut on fixed idler (A) and slide idler up approximately 25.4 mm (1-in.). Tighten nut.

6. Repeat initial adjustment procedure at idler (B) as described earlier.

7. 
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   A - Clearance, 6—10 mm (1/4—3/8-in.)

   Adjust guide bolt clearance (A), back of belt to bolt.

   Item	Measurement	Specification
   Main Drive Belt	Clearance	6—10 mm 1/4—3/8-in.)

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8. Install covers, flange-head bolts and nuts and close door.