MacDon D65 Operator's Manual page 185

5. If the belt (A) is tracking to one side of the knife drive
box pulley (B), the likely cause is an out of position idler
pulley (C). Proceed to Step
page 174 to correct the problem.
6. To correct the tracking problem on the drive pulley,
adjust the position of the cross shaft support tube
as follows:
a. Loosen nut (A) on support assembly (B).
b. Slide the support (B) rearward in slot (C) to correct
toe-out condition, or forward to correct toe-in
condition.
c. Retighten nut (A).
d. Operate the header and check the tracking. Adjust
the support assembly as required.
e. If the belt tracking problem continues, proceed to
Step 8., Adjusting Belt Tracking, page
169899
MAINTENANCE AND SERVICING
7., Adjusting Belt Tracking,
175.
173
Figure 6.96: Knife Drive Belt
Figure 6.97: Cross-Shaft Support
Revision A