MacDon FD75 OM - Manual (Page 63)

OPERATION
1. Raise header to full height, shut down combine and
remove key from ignition.
2. Engage header lift cylinder safety props.
3. Loosen upper jam nut (A) on spring tensioner.
4. Turn lower nut (B) to decrease tension until length
of protruding thread (C) on tensioner decreases
1—1-3/8 in. (25–35 mm) from its original position.
5. Tighten jam nut (A).
6. Repeat above for opposite side.
Figure 4.23: Tensioner
4.6.4 Reel Settings
Table 4.2 FD75 Reel Settings Chart
Cam Setting Number
(Finger Speed Gain)
Reel Position
Number
Reel Finger Pattern
1 (0) 6 or 7
2 (20%) 6 or 7
169894 49 Revision A