Knife Speed; Reel Height; Reel Fore-Aft Position - MacDon D65 Operator's Manual

4.7.7 Knife Speed

The header knife drive is driven by the windrower hydraulic pump and is controlled with the windrower Cab Display
Module (CDM). The default speed is 1200 strokes per minute (spm). Refer to your windrower operator's manual.
Table 4.3 Knife Speed Guidelines
Header Size (ft.)
15 ft.
20, 25 ft.
30 ft.
35 ft.
40 ft.

4.7.8 Reel Height

The crop type and condition determine the operating height of the reel.
Set reel height to carry material past the knife onto the drapers with minimal disturbance and damage to the cut
crop. Also see 4.7.9 Reel Fore-Aft Position, page
The reel height is controlled with switches in the operators cab.
Indications that reel may be too low are:
• Crop loss over header backtube
• Disturbance of crop on drapers by the reel fingers
• Crop being pushed down by the tine tubes
Indications that the reel may be too high:
• Cutterbar plugging
• Leaving uncut lodged crop
• Grain stalks dropping ahead of cutterbar
Refer to 4.6.2 Header Settings, page 46
IMPORTANT:
Maintain adequate clearance to prevent fingers contacting the knife or the ground. Refer to
to Cutterbar, page 200.

4.7.9 Reel Fore-Aft Position

Reel fore-aft position is a critical factor for good results in adverse conditions. The reel position is factory-set for
normal conditions and can be adjusted forward or backward as required using controls in the cab.
The reel can also be moved approximately 9 in. (227 mm) further aft by repositioning the fore-aft cylinders on the
reel arms to accommodate certain crop conditions
For double reel headers, refer to
For single reel headers, refer to
169899
OPERATION
Recommended Knife Speed Range (spm)
Single Knife
—
1200–1400
1200–1400
1100–1300
1050–1200
58.
for recommended reel height in specific crops and crop conditions.
Repositioning Fore-Aft Cylinders on Double Reel, page
Repositioning Fore-Aft Cylinders on Single Reel, page
58
Double Knife
1500–1900
1400–1700
1200–1600
1200–1400
1100–1400
6.8.1 Reel Clearance
62.
59.
Revision A