RedMax G621AVS manual Troubleshooting Guide, Case 2. Lack of power/Poor acceleration/Rough idling

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12. Troubleshooting Guide

Case 1. Starting failure:

Make sure the icing prevention system is not working.

Check fuel for water or substandard mixture.

➜

Check for engine flooding.

➜

Check the spark.

➜Replace with proper fuel.

➜Remove and dry the spark plug.

Then pull the starter again with no choke.

➜Replace with a new plug.

Check fuel for water or substandard mixture.

➜

Check air filter and fuel

filter for clogging.

➜

Check carburetor for

inadequate adjustment.

Check oil for

substandard quality.

➜

Check oil passage

and ports for clogging.

➜Replace with proper fuel.

➜Clean.

➜Readjust speed needles.

➜Replace.

➜Clean.

When your unit seems to need further service, please consult with our service shop in your area.

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Contents G621AVS 3369-93110Safety First ContentsG621AVS Power unit SpecificationsParts location Symbols on the machine Engine Family 5KZXS MnemFor safe operation Kickback Safety Precautions for Chain SAW Users Moving Direction Installing guide bar and saw chainChain cover Chain tensioner nut Loosen TightenFuel and Chain oil HOW to MIX FuelRecommended Mixing Ratio Gasoline 50OIL For Your Engine LIFE, Avoid Fueling the UnitChain OIL Starting Engine Chain oil Fuel SwitchOperation Throttle interlock Latch Choke knobAdjusting Carburetor F13 Checking OIL SupplyIcing Prevention System ANTI-FREEZE PartsChain Brake How to confirmF19 Front handle Released Braking Brake leverSawing Guard Against Kickback F20F21 Felling a Tree F21Log hanging off the ground F23 F22 F23 F24 F25 Log lying on the ground F22Cutting Limb of Fallen Tree F24 Oiling port MaintenanceMaintenance After Each USE Oiling port Guide barPeriodical Service Points NGK BPM7A F34 F35 Maintenance of Saw Chain and Guide BarSAW Chain Oregon BAR StorageGuide BAR GB BARCase 2. Lack of power/Poor acceleration/Rough idling Troubleshooting GuideCase 3. Oil does not come out Parts list Fig.A-1 Power Unit G621AVS Fig.A-2 Power Unit  27  Fig.B Carbburetor Fig.D Cutting Head Chain Saws Limited Warranty RedMax Garantie limitée des tronçonneuses