MacDon FlexDraper FD75 - O-Ring Face Seal Hydraulic Fittings

214323 525 Revision B
Symptom: Excessive breakage of knife sections or guards
Knife hold-downs not adjusted
properly
Adjust hold-downs
Checking and Adjusting Knife Hold-
Downs, page 410
Cutterbar operating too low in stony
conditions
Raise cutterbar with skid shoes
Cutting on Ground, page 58
Float set too heavy Adjust float springs for lighter float 3.7.2 Header Float, page 60
Bent or broken guard Straighten or replace guard
6.8.7 Knife Guards, page 404
Header angle too steep Flatten header angle 3.7.4 Header Angle, page 78
Symptom: Knife back breakage
Bent or broken guard Straighten or replace guard 6.8.7 Knife Guards, page 404
Worn knifehead pin Replace knifehead pin
• 6.8.3 Removing Knifehead Bearing,
page 401
• 6.8.4 Installing Knifehead Bearing,
page 402
Dull knife
Replace knife
• 6.8.2 Removing Knife, page 400
• 6.8.5 Installing Knife, page 402
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