Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw CHAIN STRETCH Error Fix: Chain Has Stretched Beyond Adjustment Range

The chain has stretched with use and can no longer be adequately tensioned using the tensioning mechanism — even at maximum tension, the chain sags below the bar. All cutting chains stretch during use as the rivet holes and drive link connections wear. A new chain will need tensioning several times during its first use as the components "seat." When the chain has stretched to the point where the tensioner cannot take up more slack, the chain must be replaced. Do NOT attempt to remove links from the chain to shorten it, as this requires a specialized chain breaker tool and improper repair can cause the chain to fail during use. Replace with a Ryobi replacement chain matching the bar length, pitch, and gauge specified in the owner's manual. Replacement chains for the RY40550 are available at Home Depot and online — ensure you match the correct specifications (bar length, number of drive links, pitch, and gauge).

info2 fixes available

Quick Answer

Error CHAIN STRETCH on the Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw means: Chain Has Stretched Beyond Adjustment Range. The top-ranked community fix is “Replace the Chain Using a Chain Breaker Tool and Inspect the Sprocket” (hard difficulty, ~45 min, DIY cost: $50-$80). 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: $120-$180.

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 WON'T MOVE

Chain Not Moving When Trigger Is Pulled

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 STRETCH

What does error code CHAIN STRETCH mean on a Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw?

Error code CHAIN STRETCH on the Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw means: Chain Has Stretched Beyond Adjustment Range. The chain has stretched with use and can no longer be adequately tensioned using the tensioning mechanism — even at maximum tension, the chain sags below the bar. All cutting chains stretch during use as the rivet holes and drive link connections wear. A new chain will need tensioning several times during its first use as the components "seat." When the chain has stretched to the point where the tensioner cannot take up more slack, the chain must be replaced. Do NOT attempt to remove links from the chain to shorten it, as this requires a specialized chain breaker tool and improper repair can cause the chain to fail during use. Replace with a Ryobi replacement chain matching the bar length, pitch, and gauge specified in the owner's manual. Replacement chains for the RY40550 are available at Home Depot and online — ensure you match the correct specifications (bar length, number of drive links, pitch, and gauge).

How do I fix error code CHAIN STRETCH on my Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw?

The most successful fix is "Replace the Chain Using a Chain Breaker Tool and Inspect the Sprocket" (hard difficulty, ~45 minutes). Estimated DIY cost: $50-$80. HomeMD has 2 community-ranked fixes for this error.

Is error code CHAIN STRETCH on a Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw serious?

This error is rated info 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 STRETCH myself?

Yes — the top-ranked community fix ("Replace the Chain Using a Chain Breaker Tool and Inspect the Sprocket") is rated hard difficulty and takes about 45 minutes. Tools needed: Wrench or socket set, Chain breaker tool, Protective gloves, Eye protection.

How much does it cost to repair Ryobi Ryobi RY40550 40V HP Brushless 14 in. Chainsaw error CHAIN STRETCH?

DIY cost: $50-$80. Professional repair typically costs $120-$180. 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 WON'T MOVE — Chain Not Moving When Trigger Is Pulled (2 fixes)
CHARGER RED-GREEN — Charger Alternating Red/Green — Defective Battery (2 fixes)

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