MacDon FFT FD75 Assembly Instructions Manual page 285

9. Check that draper speed control (A) is set to 6 as
shown. If required, turn knob until desired setting lines
up with slot in panel.
10. Ensure feeder house variable speed is set
to MINIMUM.
CAUTION
Never start or move the machine until you are sure all
bystanders have cleared the area.
11. Open left endshield. Refer to
page 83
12. Start combine and run header slowly for five minutes
while watching and listening FROM THE OPERATOR'S
SEAT for binding or interfering parts.
NOTE:
Reel and side drapers will not operate until oil flow
fills lines.
13. Run header for an additional ten minutes at operating
speed while watching and listening FROM THE
OPERATOR'S SEAT for binding or interfering parts.
14. Have someone check rpm of knife drive box pulley (A)
with a handheld tachometer.
15. Compare actual pulley rpm with values in following chart:
Table 6.1 Recommended Knife Drive Speed (rpm)
Header Size
30 foot
35 foot
40 foot
45 foot
214325
RUNNING UP HEADER
3.4.5 Opening Endshield,
Recommended Knife Drive
Speed Range: Single Knife
600–700 rpm
550–650 rpm
525–600 rpm
N/A
275
Figure 6.5: Draper Speed Control
Figure 6.6: Knife Drive Box
Recommended Knife Drive
Speed Range: Double Knife
–
550–700 rpm
Revision A