MacDon FD75 OM - Manual (Page 416)

TROUBLESHOOTING
Symptom Problem Solution Section
Reel too high or too far
forward Lower reel or move reel
rearward
4.7.9 Reel Height, page
151
and 4.7.10 Reel
Fore-Aft Position, page
152
Ground speed to slow Increase ground speed
4.7.6 Ground Speed, page
147
Loose knife drive belt Adjust drive belt tension
6.8.8 Knife Drive Belt, page
311
Improper knife hold-down
adjustment
Adjust hold-down
Knife Hold-Downs, page
309
Dull or broken knife section Replace knife section
6.8.1 Replacing Knife
Section, page 300
Bent or broken guards Align or replace guards
6.8.7 Knife Guards, page
304
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
Steel pick-up fingers
contacting knife Increase reel clearance to
cutterbar or adjust “frown”
6.12.1 Reel Clearance to
Cutterbar, page 348
and
6.12.2 Reel Frown, page
350
Float too heavy
Adjust springs for lighter
float 4.7.3 Header Float, page
137
Raise cutterbar by lowering
skid shoes Cutting On the Ground,
page 55
Install cut-out sections See your MacDon Dealer
Mud or dirt build-up on
cutterbar
Flatten header angle
4.7.4 Header Angle, page
145
Knife plugging
Knife is not operating at
recommended speed Check engine speed of
combine
See your MacDon Dealer
Knife hold-downs not
adjusted properly
Adjust hold-downs
Knife Hold-Downs, page
309
Knife not operating at
recommended speed Check engine speed of
combine
See your MacDon Dealer
Excessive knife wear Replace knife
6.8.5 Installing Knife, page
303
Excessive header
vibration
Loose or worn knifehead
pin or drive arm
Tighten or replace parts
6.8.1 Replacing Knife
Section, page 300
Incorrect knife speed Adjust knife speed
4.7.8 Knife Speed, page
150
Driveline U-joints worn Replace U-joints —
Excessive vibration of
adapter and header
Bent cutterbar Straighten cutterbar See your MacDon Dealer
169894 402 Revision A