MacDon FD75 OM - Manual (Page 326)

MAINTENANCE AND SERVICING
4. Open the access cover (A) on the endsheet behind
cutterbar to provide clearance between the knife drive
box pulley and the endsheet.
Figure 6.112: Access Cover
5. Remove belt (A) from drive pulley (B).
6. Slip belt (A) over and behind the knife drive box
pulley (C). Utilize notch in pulley to assist in
removing belt.
Figure 6.113: Knife Drive
Installing Knife Drive Belt
NOTE:
Procedure is the same for both sides of the double knife header.
1. Route knife drive belt (A) around knife drive box pulley
(C) and knife drive pulley (B). Utilize notch in pulley (C)
to assist in installing belt.
NOTE:
When installing new belt, never pry belt over
pulley. Be sure drive motor is fully forward.
2. Tension knife drive belt. Refer to Tensioning Knife
Drive Belts, page 313 .
Figure 6.114: Knife Drive
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