Maintenance/service header drive – MacDon 9352c SP User Manual
Page 97

Form # 147459
Issue 11/06 Web Rev_01
95
 MAINTENANCE/SERVICE 
 
Header Drive 
 
HEADER DRIVE BELT GUIDES (continued) 
 
To adjust: 
 
1. Stop engine and remove key from ignition. 
 
2. Loosen hardware securing top guide (A), belt keeper 
(B) and lower guide (C).
 
3. Hold rear idler (D) down with 15/16 wrench to tighten 
belt.
 
4. Adjust belt guides and keepers: 
• Adjust top guide (A) to clear belt by 1/4 inch (6 mm) at 
front. At the back, center the belt between top guide 
(A) and retainer (E). Adjust hardware (F), both sides, 
to clear sides of belt. 
 
• Adjust belt keeper (B) to clear belt by 1/8 inch (3 mm). 
 
• Adjust lower guide (C) to clear belt by 1/8 inch (3 
mm).
NOTE: Lower guide must remain free to pivot on 1/2
inch bolt. Over-tightening can prevent header from 
engaging. 
 
5. Tighten hardware. 
 
6. Adjust front pulley shield. (See below.) 
 
 
 
 
HEADER DRIVE PULLEY SHIELD 
 
The pulley shield should be adjusted so it does not rub 
the belt when the drive is engaged. 
 
To adjust: 
1. Stop engine and remove key from ignition. 
 
2. Loosen hardware (A) at shield. 
 
3. Push up on lower strand of belt to simulate tightened 
position (belt fully engaging pulley grooves).
 
4. Position shield (B) to achieve a consistent 1/8" (3 mm) 
clearance to belt around entire shield.
 
5. Tighten hardware (A). 
 
D
C
B
A
E
F
A
C
F
E
ADJUSTING BELT GUIDES & KEEPER
A
B
ADJUSTING PULLEY SHIELD
