failure mode
FM-09: FM-09 CHAIN IS TOO TIGHT, BINDS BY HAND, OR BAR AND CHAIN OVERHEAT
FM-09 CHAIN IS TOO TIGHT, BINDS BY HAND, OR BAR AND CHAIN OVERHEAT
Diagnostic overview
FM-09 CHAIN IS TOO TIGHT, BINDS BY HAND, OR BAR AND CHAIN OVERHEAT
Likely Root Causes
- Chain was over-tensioned
- Chain or bar is dry
- Guide-bar groove or oil hole is clogged
- Wrong or damaged chain is installed
- Bar rails or drive links are burred
Quick Checks
- POST-REPAIR CHECK
Repair Preview
Release the trigger, remove the battery, and let the bar and chain cool before touching them.
This is a preview of the troubleshooting guidance included in the full repair manual.
Related symptoms
The chain is hard to pull around the bar, the bar becomes unusually hot, or smoke appears without an electrical odor.
The chain is hard to pull around the bar, the bar 1. Release the trigger, remove the battery, and let the bar and chain cool before
Included in the full manual
- root cause analysis
- tools needed
- step-by-step repair procedure
- diagrams
- exploded views
- post-repair checks
Public pages show a preview only. Purchase the full manual to download complete repair steps, diagrams, and verification procedures.