Knife Speed; Setting Knife Speed (With Expansion Module Md #4666) - MacDon M105 Operator's Manual

1. Engage header.
2. Set HEADER INDEX switch (B) to OFF.
3. Press DISPLAY SELECTOR (E) to display at (A) DRAPER SPEED.
4. On cab display module (CDM) press FAST (C) or SLOW (D) until desired draper speed is displayed at (A).
Display shows ##.# DRAPER SPEED.
##.# = MPH or KPH

4.6.8 Knife Speed

The ideal cutting speed of the knife should be such that a clean cut is achieved. Crop types and conditions
usually influence the knife and forward speeds. Refer to the header operator's manual for more information
on knife speeds.
The knife speed is manually set by making adjustments to the knife drive pump, and has been preset at the lowest
knife rpm. For optimum performance, adjust the knife speed according to the header being used. Refer to the
following table.
If the machine is equipped with the appropriate sensor and optional module, the cab display module (CDM) will notify
you when the knife speed reaches an overload preset (usually 75% of knife speed).
The preset can be changed on the CDM. Refer to
NOTE:
The knife speed should be set within the range specified for each header.
Table 4.1 D-Series Knife Speed
Header Description
Type
20 and 25
Draper Double
Knife
20 and 25
Draper Single
Knife

Setting Knife Speed (with Expansion Module MD #4666)

DANGER
Stop engine and remove key from ignition before leaving operator's seat for any reason. A child or even a
pet could engage an idling machine.
14. Revolutions per minute - Speed of knife drive box pulley
15. Strokes per minute of knife (rpm x 2)
169890
Size (ft)
rpm
15 750
700
30
35
600
30
35 550
OPERATION
3.18.5 Cab Display Module (CDM) Programming, page
Knife Speed
Minimum
14 15
spm
1500
1400
1200
1100
175
70.
Maximum
rpm 14 spm 15
950 1900
850 1700
800 1600
700 1400
750 1500
700 1400
Revision A