MacDon D1X Series - Page 276

215651 262 Revision B
Problem Solution
Refer to
Symptom: Ragged or uneven cutting of crop
Loose knife drive belt
Adjust drive belt tension
• Checking and Tensioning Untimed
Double-Knife Drive Belts, page 160
• Tensioning Timed Double-Knife
Drive Belts, page 167
Improper knife hold-down adjustment Adjust knife hold-down
• 5.5.8 Knife Hold-Downs, page 141
• Checking and Adjusting Hold-
Downs with Pointed Guards, page
141
• Checking and Adjusting Hold-
Down at Double-Knife Center
Pointed Guard, page 142
• Checking and Adjusting Hold-
Down with Stub Guards, page 143
Dull or broken knife sections
Replace knife sections
5.5.1 Replacing Knife Section, page
132
Bent or broken guards Align or replace guards
5.5.7 Knife Guards, page 137
Reel fingers not properly lifting crop
ahead of knife
Adjust reel position and/or
finger pitch
• 3.7.9 Reel Fore-Aft Position, page
67
• 3.7.10 Reel Tine Pitch, page 68
Steel pick-up fingers contacting knife
Increase reel clearance to cutterbar or
adjust frown
• 5.8.2 Reel Frown, page 202
Float is set too heavy Adjust springs for lighter float 3.7.2 Header Float, page 63
Mud or dirt build-up on cutterbar Raise cutterbar by lowering skid shoes Cutting on the Ground, page 61
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 Adjusting Header Angle, page 64
Knife is not operating at
recommended speed
Check engine speed of windrower
Refer to the windrower
operator’s manual
Symptom: Knife back breakage
Bent or broken guard Straighten or replace guard 5.5.7 Knife Guards, page 137
Worn knifehead pin Replace knifehead pin
5.5.4 Removing Knifehead Bearing,
page 134
Dull knife
Replace knife
• 5.5.3 Removing Knife, page 134
• 5.5.6 Installing Knife, page 136
Symptom: Excessive header vibration
Knife hold-downs not properly
adjusted
Adjust hold-downs 5.5.8 Knife Hold-Downs, page 141
Knives on double-knife drive not
timed
Adjust knife timing
Adjusting Timed Double-Knife Timing,
page 169
Knife not operating at
recommended speed
Check engine speed of windrower
Refer to the windrower operator’s
manual
TROUBLESHOOTING