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Adjusting Double-Knife Timing
Timed double-knife drive headers (35-foot and smaller) require the knives to be properly timed to move in
opposite directions.
WARNING
To avoid bodily injury or death from unexpected startup of machine, always stop engine and remove key
before making adjustments to machine.
1. Shut down the windrower, and remove the key from the ignition.
2. Open both endshields. Refer to
3. Remove the right-hand belt. Refer to
Removing Timed Knife Drive Belt, page 143
4. Rotate the left knife drive box driven pulley clockwise
until the left knife (A) is at the center of the inboard
stroke (B) (moving towards the center of the header).
NOTE:
The center stroke is when the knife sections (C) are
centered between the guard points.
Figure 5.92: Adjusting Timing – Left Side
5. Rotate the right knife drive box pulley counterclockwise
until the right knife (A) is at the center of the inboard
stroke (B) (moving towards the center of the header).
NOTE:
The center stroke is when the knife sections (C) are
centered between the guard points.
Figure 5.93: Adjusting Timing – Right Side
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Revision A