MacDon M100 SP Operators Manual - Manual (Page 99)

HEADER OPERATION – A SERIES
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Rev. C
2. Loosen jam-nut (A).
3. Turn adjuster screw (B) clockwise (screw in)
to decrease knife speed, and counter-
clockwise (screw out) to increase the knife
speed.
NOTE
One turn of the adjuster screw will change
the knife speed by approximately 116
strokes per minute, or the wobble box
pulley speed by 58 revolutions per minute.
4. Once adjustment has been made re-torque
jam nut (A) as shown.
d. Start engine and recheck knife speed.
A
B