EGO EGO POWER+ CS1804 18-Inch 56V Cordless Chainsaw with Chain Tensioning CHAIN-LOOSE Error Fix: Chain Too Loose on Bar

Error code CHAIN-LOOSE on the EGO EGO POWER+ CS1804 18-Inch 56V Cordless Chainsaw with Chain Tensioning means: Chain Too Loose on Bar. The chain hangs visibly below the guide bar or derails during cutting — the chain tension needs adjustment; loosen the bar clamp nuts, turn the tensioning knob clockwise until the chain sits snugly against the bar with about 1/8" snap-back when pulled, then retighten the clamp nuts; new chains stretch significantly during the first few uses and require frequent retensioning

The most successful fix is "Replace Chain Tensioning Assembly and Inspect Guide Bar" (medium difficulty, ~30 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Replace Chain Tensioning Assembly and Inspect Guide Bar") is rated medium difficulty and takes about 30 minutes. Tools needed: Combination wrench (usually 13mm), Phillips screwdriver, Needle-nose pliers.

DIY cost: $15-$25. Professional repair typically costs $100-$150. Many homeowners save money by trying the top-ranked community fix first.

The EGO EGO POWER+ CS1804 18-Inch 56V Cordless Chainsaw with Chain Tensioning has 8 other known error codes, including: BAR-OIL-EMPTY (Bar and Chain Oil Reservoir Empty), BAR-OIL-LEAK (Bar Oil Leaking When Stored), BAT-1-FLASH (Battery Single LED Flashing), BAT-COLD (Battery Too Cold to Operate), BAT-HOT (Battery Overtemperature Protection), and 3 more.

Error code CHAIN-LOOSE also appears on 1 other EGO model: CS1401 14 in 56V Brushless Motor Cordless Chainsaw with Rapid Reload Chain Tensioning. The fix may vary by model, so check each model's specific page for tailored repair steps.