MAC215986
160
Revision A
1029362
A
Figure 3.215: Flywheel
6.
Measure the rpm of flywheel (A) with a hand-held photo
tachometer.
NOTE:
One revolution (rpm) is equivalent to two knife strokes
(spm) (1 rpm = 2 spm).
7.
Shut down the engine, and remove the key from
the ignition.
Table 3.23 FD2 Series Header Knife Speed
Header
Recommended Knife Drive Speed
Range (rpm)
Single-Knife
Drive
Double-Knife
Drive
FD225
600
–
700
—
FD230
600
–
750
—
FD235
600
–
700
600
–
750
FD240
600
–
650
600
–
750
FD241
—
600
–
750
FD245
—
600
–
750
FD250
—
600
–
750
8.
Compare the flywheel rpm measurement with the rpm
values in Table
NOTE:
All header models are factory-set to 650 rpm. This knife
speed will work fine in normal cutting conditions.
9.
Contact your MacDon Dealer if the pulley rpm
measurement exceeds the specified rpm range for your
header.
3.9.10
Reel Height
The reel operating position depends on the type of crop and cutting conditions.
Set the reel height and fore-aft position to carry material past the knife and onto the drapers with minimal damage to
the crop.
The reel height is controlled manually or with button presets on the ground speed lever (GSL) in the combine cab. Refer to
your combine operator
’
s manual for instructions on controlling reel height or setting up auto reel height presets. Where
applicable, this manual contains instructions for presetting reel height on selected combines. Refer to
for more information.
For more information on fore-aft positioning, refer to