MacDon FlexDraper FD1 Series Operator's Manual page 590

Problem
Knife is not operating at
recommended speed
Symptom: Excessive header vibration
Knife hold-downs not adjusted
properly
Knife not operating at recommended
speed
Excessive knife wear
Loose or worn knifehead pin or drive
arm
Symptom: Excessive vibration of float module and header
Incorrect knife speed
Driveline U-joints worn
Bent cutterbar
Symptom: Excessive breakage of knife sections or guards
Knife hold-downs not adjusted
properly
Cutterbar operating too low in stony
conditions
Float is set too heavy
Bent or broken guard
Header angle too steep
Symptom: Knife back breakage
Bent or broken guard
Worn knifehead pin
Dull knife
214683
TROUBLESHOOTING
Solution
Check engine speed of combine or
header knife speed
Adjust hold-downs
Check engine speed of combine
Replace knife
Tighten or replace parts
Adjust knife speed
Replace U-joints
Straighten cutterbar
Adjust hold-downs
Raise cutterbar using skid shoes
Adjust float springs for lighter float
Straighten or replace guard
Flatten header angle
Straighten or replace guard
Replace knifehead pin
Replace knife
566
Refer to
•
Refer to combine operator's
manual
•
Checking Knife Speed, page 95
•
Adjusting Hold-Downs with
Pointed Guards, page 448
•
Adjusting Hold-Downs with
Stub Guards, page 451
Refer to combine operator's manual
•
5.8.2 Removing Knife, page 438
•
5.8.5 Installing Knife, page 440
5.8.1 Replacing Knife Section, page
437
Checking Knife Speed, page 95
See your MacDon Dealer
See your MacDon Dealer
•
Adjusting Hold-Downs with
Pointed Guards, page 448
•
Adjusting Hold-Downs with
Stub Guards, page 451
3.7.2 Cutting on the Ground, page
62
3.7.3 Header Float, page 64
5.8.7 Knife Guards, page 441
3.7.5 Header Angle, page 81
5.8.7 Knife Guards, page 441
•
5.8.3 Removing Knifehead
Bearing, page 439
•
5.8.4 Installing Knifehead
Bearing, page 440
•
5.8.2 Removing Knife, page 438
•
5.8.5 Installing Knife, page 440
Revision A