Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw CHAIN WON'T MOVE Error Fix: Chain Not Moving When Trigger Is Pulled

The motor sounds like it is running (you can hear the motor spin up) but the chain does not move on the guide bar. First check the chain brake — the chain brake is the large hand guard in front of the top handle. If the chain brake is engaged (pushed forward), the chain will not move even though the motor runs. Pull the chain brake handle back toward the top handle to release it. If the chain brake is not engaged, the chain may have come off the bar — look at the bar tip and underside. If the chain is still on the bar, the chain tension may be far too loose, causing the chain to sit in the bar groove without engaging the drive sprocket. Tighten the chain using the tensioning knob or screw on the side of the chainsaw. The chain should be snug against the bottom of the bar but still able to be pulled along the bar by hand with moderate effort. If the motor runs and the chain is properly tensioned but still won't move, the drive sprocket or clutch mechanism may have failed — this requires warranty service.

warning2 fixes available✨ Free fix available

Quick Answer

Error CHAIN WON'T MOVE on the Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw means: Chain Not Moving When Trigger Is Pulled. The top-ranked community fix is “Inspect and Replace Drive Sprocket or Clutch Assembly” (medium difficulty, ~60 min, DIY cost: $0-$20). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · chainsaw

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many chainsaw repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $150-$250.

Other Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw Error Codes

BATT ALL BLINK

Battery Fault — All 4 LEDs Blinking

2 fixes

BATT COLD

Battery Too Cold to Operate or Charge

2 fixes

BATT DEPLETED

Battery Fully Depleted — No LEDs Lit

2 fixes

BATT OVERHEAT

Battery Over-Temperature — Tool Shuts Down

2 fixes

CHAIN BRAKE STUCK

Chain Brake Won't Release

2 fixes

CHAIN LOOSE

Chain Comes Off the Guide Bar

2 fixes

CHAIN STRETCH

Chain Has Stretched Beyond Adjustment Range

2 fixes

CHARGER RED-GREEN

Charger Alternating Red/Green — Defective Battery

2 fixes

People Also Ask About Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw Error CHAIN WON'T MOVE

What does error code CHAIN WON'T MOVE mean on a Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw?

Error code CHAIN WON'T MOVE on the Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw means: Chain Not Moving When Trigger Is Pulled. The motor sounds like it is running (you can hear the motor spin up) but the chain does not move on the guide bar. First check the chain brake — the chain brake is the large hand guard in front of the top handle. If the chain brake is engaged (pushed forward), the chain will not move even though the motor runs. Pull the chain brake handle back toward the top handle to release it. If the chain brake is not engaged, the chain may have come off the bar — look at the bar tip and underside. If the chain is still on the bar, the chain tension may be far too loose, causing the chain to sit in the bar groove without engaging the drive sprocket. Tighten the chain using the tensioning knob or screw on the side of the chainsaw. The chain should be snug against the bottom of the bar but still able to be pulled along the bar by hand with moderate effort. If the motor runs and the chain is properly tensioned but still won't move, the drive sprocket or clutch mechanism may have failed — this requires warranty service.

How do I fix error code CHAIN WON'T MOVE on my Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw?

The most successful fix is "Inspect and Replace Drive Sprocket or Clutch Assembly" (medium difficulty, ~60 minutes). Estimated DIY cost: $0-$20. HomeMD has 2 community-ranked fixes for this error.

Is error code CHAIN WON'T MOVE on a Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw serious?

This error is rated warning severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw error CHAIN WON'T MOVE myself?

Yes — the top-ranked community fix ("Inspect and Replace Drive Sprocket or Clutch Assembly") is rated medium difficulty and takes about 60 minutes. Tools needed: Wrench or socket set, T20 Torx screwdriver, Pliers.

How much does it cost to repair Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw error CHAIN WON'T MOVE?

DIY cost: $0-$20. Professional repair typically costs $150-$250. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw have?

The Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw has 8 other known error codes, including: BATT ALL BLINK (Battery Fault — All 4 LEDs Blinking), BATT COLD (Battery Too Cold to Operate or Charge), BATT DEPLETED (Battery Fully Depleted — No LEDs Lit), BATT OVERHEAT (Battery Over-Temperature — Tool Shuts Down), CHAIN BRAKE STUCK (Chain Brake Won't Release), and 3 more.

What other error codes does the Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw have?

The Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw has 8 other known error codes:

BATT ALL BLINK — Battery Fault — All 4 LEDs Blinking (2 fixes)
BATT COLD — Battery Too Cold to Operate or Charge (2 fixes)
BATT DEPLETED — Battery Fully Depleted — No LEDs Lit (2 fixes)
BATT OVERHEAT — Battery Over-Temperature — Tool Shuts Down (2 fixes)
CHAIN BRAKE STUCK — Chain Brake Won't Release (2 fixes)
CHAIN LOOSE — Chain Comes Off the Guide Bar (2 fixes)
CHAIN STRETCH — Chain Has Stretched Beyond Adjustment Range (2 fixes)
CHARGER RED-GREEN — Charger Alternating Red/Green — Defective Battery (2 fixes)

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