MacDon FlexDraper FD75 - O-Ring Boss Hydraulic Fittings - Non-Adjustable

214323 524 Revision B
Problem Solution Refer to
Steel pick-up fingers contacting knife
Increase reel clearance to cutterbar or
adjust “frown”
• 6.13.1 Reel Clearance to Cutterbar,
page 464
• 6.13.2 Reel Frown, page 467
Float too heavy Adjust springs for lighter float 3.7.2 Header Float, page 60
Mud or dirt build-up on cutterbar Raise cutterbar by lowering skid shoes Cutting on Ground, page 58
Mud or dirt build-up on cutterbar
Install cutout sections
Installing Knifehead Shield, page 416
Mud or dirt build-up on cutterbar Flatten header angle 3.7.4 Header Angle, page 78
Knife is not operating at
recommended speed
Check engine speed of combine Refer to combine operator’s manual
Knife hold-downs not adjusted
properly
Adjust hold-downs
Checking and Adjusting Knife Hold-
Downs, page 410
Knife not operating at recommended
speed
Check engine speed of combine Refer to combine operator’s manual
Excessive knife wear
Replace knife
• 6.8.2 Removing Knife, page 400
• 6.8.5 Installing Knife, page 402
Loose or worn knifehead pin or drive
arm
Tighten or replace parts
6.8.1 Replacing Knife Section, page
399
Symptom: Excessive vibration of adapter and header
Incorrect knife speed Adjust knife speed 3.7.8 Knife Speed, page 88
Driveline U-joints worn Replace U-joints See your MacDon Dealer
Bent cutterbar
Straighten cutterbar See your MacDon Dealer
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