FM-12: FM-12 CHAIN MOVES BUT WILL NOT CUT BECAUSE IT IS INSTALLED BACKWARD

Chain moves around the guide bar but does not cut because it is installed backward.

• Chain was fitted with cutters facing backward
• Chain was reversed during cleaning or replacement
• Direction marks were overlooked
• Cover was assembled before orientation was checked

1. 4.

1.

This is a preview of the troubleshooting guidance included in the full repair manual.

• The chain travels around the bar but only rubs the wood, produces almost no chips, and will not enter the cut.

  The chain travels around the bar but only rubs the wood, 1. Remove the battery and inspect the chain: cutters along the top of the guide bar

• Chain moves but does not cut

  Chain moves but does not cut Confirm the top cutters face forward; use FM-12 or FM-13.

• root cause analysis
• tools needed
• step-by-step repair procedure
• diagrams
• exploded views
• post-repair checks

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