Saw Chain Cuts Crookedly/Leans To One Side/Cuts Unevenly - Oregon Harvester Handbook

Saw Chain Troubleshooting

Saw chain cuts crookedly/leans to one side/cuts unevenly

21. Damage to cutters on one side of saw chain.
Cause: Cutters on one side of saw chain are damaged by hitting the
saw box or the ground/debris .
Symptoms: Guide bar and saw chain bind in the cut . Could result
in guide bar and saw chain breakage when removing the guide bar
from tree . Uneven guide bar rail wear .
Remedy: File cutters back enough to remove all damage . Square up
guide bar rails if uneven .
Note: Prevent the bar from being bent and touching the saw
box . Always make sure the felling cut is done before moving the
harvester head with the crane .
22. Different cutter top-plate lengths
Cause: Inconsistent sharpening .
Symptoms: Guide bar and saw chain bind in the cut . Could result
in guide bar and saw chain breakage when removing the guide bar
from tree . Uneven guide bar rail wear .
Remedy: File cutters back to even cutter top-plate lengths . Square
up guide bar rails if uneven .
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Mechanical Timber Harvesting Handbook