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Revision B
Problem
Solution
Refer to
Symptom: Ragged or uneven cutting of crop
Excessive knife wear
Replace knife
•
5.5.3 Removing Knife, page 134
•
5.5.6 Installing Knife, page 136
Loose or worn knifehead pin or
drive arm
Tighten or replace parts
•
5.5.4 Removing Knifehead Bearing,
page 134
•
5.6.1 Knife Drive Box, page 146
Bent cutterbar
Straighten cutterbar
See your MacDon Dealer
Symptom: Excessive breakage of knife sections or guards
Knife hold-downs not properly
adjusted
Adjust knife hold-downs
5.5.8 Knife Hold-Downs, page 141
Cutterbar operating too low in stony
conditions
Raise cutterbar using skid shoes
Cutting on the Ground, page 61
Float is set too heavy
Adjust springs for lighter float
Bent or broken guard
Straighten or replace guard
Header angle too steep
Flatten header angle