MacDon FD75 OM - Manual (Page 415)

TROUBLESHOOTING
7.2 Cutting Action and Knife Components
Symptom Problem Solution Section
Knife hold-downs not
adjusted properly
Adjust hold-downs
Knife Hold-Downs, page
309
Knife sections or guards
are worn or broken Replace all worn and
broken cutting parts 6.8 Knife and Knife Drive,
page 300
Knife is not operating at
recommended speed Check engine speed of
combine Refer to your combine
operator’s manual
Ground speed too fast for
reel speed Reduce ground speed or
increase reel speed
4.7.5 Reel Speed, page
146
and 4.7.6 Ground
Speed, page 147
Reel fingers not lifting crop
properly ahead of knife Adjust reel position/finger
pitch
4.7.10 Reel Fore-Aft
Position, page 152
and
4.7.11 Reel Tine Pitch,
page 156
Cutterbar too high Lower cutting height
4.7.1 Cutting Height, page
51
Header angle too flat Steepen header angle
4.7.4 Header Angle, page
145
Bent knife, causing binding
of cutting parts Straighten bent knife and
align guards
Cutting edge of guards not
close enough, or parallel to
knife sections
Align guards
6.8.7 Knife Guards, page
304
Tangled/tough-to-cut crop Install stub guards
See your MacDon Dealer,
Knife Hold-Downs, page
309
, and 8.1.16 Stub
Guard Conversion Kit,
page 420
Reel too far back Move reel forward
4.7.10 Reel Fore-Aft
Position, page 152
Ragged or uneven
cutting of crop
Loose knife drive belt Adjust drive belt tension
6.8.8 Knife Drive Belt, page
311
169894 401 Revision A