214805
101
Revision A
1009608
A
B
Figure 5.35: Knife Speed Adjuster Screw
6.
Loosen jam nut (A).
7.
Turn adjuster screw (B) clockwise (screw in) to decrease
knife speed, and counterclockwise (screw out) to increase
the knife speed.
NOTE:
One turn of 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).
8.
Once adjustment has been made, torque jam nut (A).
9.
Close hood, start engine, and recheck knife speed.
Setting Knife Speed without Expansion Module (MD #B4666)
1007691
A
Figure 5.36: Knife Drive Box on Header
1.
Check header knife drive box pulley speed with a handheld
tachometer.
2.
Multiply the rpm reading by two to obtain the knife speed
in strokes per minute.
3.
Compare reading to Table
4.
If required, adjust knife speed. Refer to Step
and Step
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