MacDon D65 - Page 280

214327 260 Revision B
Problem Solution Refer to
Dull or broken knife sections
Replace knife section
5.5.1 Replacing Knife Section, page
138
Bent or broken guards Align or replace guards 5.5.7 Knife Guards, page 142
Reel fingers not lifting crop properly
ahead of knife
Adjust reel position / finger pitch
• 3.7.11 Reel Fore-Aft Position, page
61
• 3.7.12 Reel Tine Pitch, page 68
Steel pick-up fingers contacting knife
Increase reel clearance to cutterbar, or
adjust frown
• 5.8.1 Reel Clearance to Cutterbar,
page 202
• 5.8.2 Reel Frown, page 205
Float too heavy Adjust springs for lighter float 3.7.4 Header Float, page 57
Mud or dirt build up on cutterbar Raise cutterbar by lowering skid shoes 3.7.3 Cutting on the Ground, page 55
Mud or dirt build up on cutterbar
Install cut-out sections
See your MacDon Dealer
Mud or dirt build up on cutterbar Flatten header angle Controlling Header Angle, page 57
Knife is not operating at
recommended speed
Check engine speed of windrower
Refer to your windrower’s operator’s
manual
Symptom: Excessive Header Vibration
Knife hold-downs not adjusted
properly
Adjust hold-downs
Checking and Adjusting Knife Hold-
Downs, page 148
Knives on double-knife drive
not timed
Adjust knife timing
Adjusting Double-Knife Timing, page
172
Knife not operating at recommended
speed
Check engine speed of windrower
Refer to your windrower’s operator’s
manual
Excessive knife wear
Replace knife
• 5.5.2 Removing Knife, page 139
• 5.5.5 Installing Knife, page 141
Loose or worn knifehead pin or drive
arm
Tighten or replace parts
• 5.5.3 Removing Knifehead Bearing,
page 140
• 5.6.1 Knife Drive Box, page 155
Bent cutterbar
Straighten cutterbar See your MacDon Dealer
Symptom: Knife Back Breakage
Bent or broken guard Straighten or replace guard 5.5.7 Knife Guards, page 142
Worn knifehead pin Replace knifehead pin
5.5.3 Removing Knifehead Bearing,
page 140
Dull knife
Replace knife
• 5.5.2 Removing Knife, page 139
• 5.5.5 Installing Knife, page 141
Symptom: Excessive Breakage of Knife Sections or Guards
Knife hold-downs not adjusted
properly
Adjust hold-downs
Checking and Adjusting Knife Hold-
Downs, page 148
Cutterbar operating too low in stony
conditions
Raise cutterbar using skid shoes 3.7.3 Cutting on the Ground, page 55
Float is set too heavy
Adjust for lighter float
3.7.4 Header Float, page 57
Bent or broken guard Straighten or replace guard 5.5.7 Knife Guards, page 142
Header angle too steep Flatten header angle Controlling Header Angle, page 57
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