MacDon D65 SP DHOM - Manual (Page 70)

OPERATION
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
Recommended Knife Speed Range (spm)
Header Size (ft.)
Single Knife Double Knife
15 ft. — 1500–1900
20, 25 ft. 1200–1400 1400–1700
30 ft. 1200–1400 1200–1600
35 ft. 1100–1300 1200–1400
40 ft. 1050–1200 1100–1400
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 58 .
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 for recommended reel height in specific crops and crop conditions.
IMPORTANT:
Maintain adequate clearance to prevent fingers contacting the knife or the ground. Refer to
6.8.1 Reel Clearance
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 Repositioning Fore-Aft Cylinders on Double Reel, page 62 .
For single reel headers, refer to Repositioning Fore-Aft Cylinders on Single Reel, page 59 .
169899 58 Revision A