262334 166 Revision A
Figure 4.66: Knife Timing
7. Check for correct knife timing by rotating driveshaft (A)
slowly with unplugging wrench (B), and observe where the
knives overlap at the center of the header.
IMPORTANT:
The knives must move in opposite directions, and must
begin moving at exactly the same time.
Figure 4.67: Knife Timing
8. If the timing is correct, skip the remaining steps.
9. If the timing is off, loosen the right timing belt sufficiently
to allow skipping the belt one or more teeth as required.
a. If the right knife LEADS left knife, rotate right driven
pulley (A) clockwise.
b. If the right knife LAGS left knife, rotate right driven
pulley (A) counterclockwise.
c. Tighten the right timing belt.
MAINTENANCE AND SERVICING
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