MAC215990
466
Revision A
6.2
Cutting Action and Knife Components
Use the following tables to determine the cause of the cutting action and knife component problems and the
recommended repair procedure.
Troubleshooting
–
Cutting Action and Knife Components
Problem
Solution
Refer to
Symptom: Ragged or uneven cutting of crop
Knife hold-down not adjusted properly
Adjust the hold-down
•
•
Knife sections or guards are worn
or broken
Replace all worn and broken
cutting parts
•
Replacing Pointed Center Knife
•
Replacing Pointed Knife Guards,
•
•
Replacing Short Knife Guards or
•
4.8.1 Replacing Knife Section, page
306
Knife is not operating at
recommended speed
Feeder house speed set too low or
knife speed not adjusted to
proper range
Checking Knife Speed, page 138
Ground speed too fast for reel speed
Reduce ground speed or increase
reel speed
•
•
Reel fingers not lifting crop properly
ahead of knife
Adjust reel position/finger pitch
•
3.9.11 Reel Fore-Aft Position, page
144
•
3.9.12 Reel Tine Pitch, page 152
Cutterbar too high
Lower cutting height
3.9.1 Cutting off Ground, page 115
or
3.9.2 Cutting on Ground, page 118
Header angle too flat
Steepen header angle
Cutting edge of guards not close
enough or parallel to knife sections
Align guards
Adjusting Knife Guards and Guard Bar,
page 318
Tangled/tough-to-cut crop
Install short knife guards
MacDon Dealer
•
or