Setting Knife Speed (Without Expansion Module Md #B4666) - MacDon M105 Operator's Manual

12. Loosen jam nut (A).
13. Turn adjuster screw (B) clockwise (screw in) to
decrease knife speed, and counterclockwise (screw
out) to increase the knife speed.
NOTE:
One turn of the adjuster screw (B) will change the knife
speed by approximately 116 strokes per minute (spm),
or the knife drive box pulley speed by 58 revolutions per
minute (rpm).
14. Once adjustment has been made, torque jam nut (A).
15. Close hood, start engine, and recheck knife speed.

Setting Knife Speed (without Expansion Module MD #B4666)

1. Check header knife drive box pulley speed with a
handheld tachometer.
2. Multiply the rpm reading by 2 to obtain the knife speed
in strokes per minute.
3. Compare reading to Table
page 175.
4. If required, adjust knife speed. Refer to Step
Knife Speed (with Expansion Module MD #4666), page
176.
169890
OPERATION
4.1 D-Series Knife Speed ,
9., Setting
Figure 4.183: Knife Speed Adjuster Screw
Figure 4.184: Knife Drive Box on Header
177
Revision A