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The saw chain tension is too loose
Adjust the saw chain tension
The guide bar and saw chain are assembled incorrectly
Refer to Removing and Installing the Guide Bar and Saw Chain
The saw chain tension is too tight
Adjust the saw chain tension
The chain oil reservoir is empty
Refill the chain oil reservoir
The guide bar groove and oil passages are dirty
Clean the guide bar and oil passages
The automatic oiler flow is too low
Increase the oil flow
The saw chain tension is too tight
Adjust the saw chain tension
The guide bar and saw chain are assembled incorrectly
Refer to Removing and Installing the Guide Bar and Saw Chain
The guide bar and saw chain are damaged
Inspect the guide bar and saw chain for damage. Replace them if
necessary
The drive assembly is damaged
Refer to Service information
The chain brake is engaged
Disengage the chain brake
The saw chain is dull
Sharpen or replace the saw chain
The saw chain is on backwards
Check and correct the saw chain direction
The fuel tank is empty
Fill the fuel tank with properly-mixed fuel
The primer bulb was not pressed enough
Press the primer bulb 10 times or until fuel is visible
The engine is flooded
Move the choke knob to Position 2, press the throttle lockout,
squeeze the throttle control and pull the starter rope
The fuel is old (over 30 days) and/or improperly mixed
Drain the fuel tank and add fresh, properly-mixed fuel
The spark plug is not working properly
Refer to Maintaining the Spark Plug
The On/Off switch is in the Off ( O ) position
Move the On/Off switch to the On ( I ) position
TROUBLESHOOTING
The fuel is old (over 30 days) and/or improperly mixed
Drain the fuel tank and add fresh, properly-mixed fuel
The air filter is dirty
Clean or replace the air filter
PROBLEM
SOLUTION
The air filter is dirty
Clean or replace the air filter
The fuel is old (over 30 days) and/or improperly mixed
Drain the fuel tank and add fresh, properly-mixed fuel
The idle speed is incorrect
Adjust the idle speed
The fuel is old (over 30 days) and/or improperly mixed
Drain the fuel tank and add fresh, properly-mixed fuel
The air filter is dirty
Clean or replace the air filter
The spark plug is not working properly
Refer to Maintaining the Spark Plug
THE SAW CHAIN ROTATES, BUT DOES NOT CUT
THE SAW CHAIN DOES NOT ROTATE
THE GUIDE BAR AND SAW CHAIN ARE RUNNING HOT, SMOKING OR STUCK
THE ENGINE LACKS POWER OR STALLS
THE ENGINE WILL NOT ACCELERATE
THE ENGINE WILL NOT IDLE
THE ENGINE WILL NOT START
If further assistance is required, contact an authorized service center.
THE SAW CHAIN COMES OFF THE GUIDE BAR
