Echo WT-1610SP Operator's Manual page 17

PROBLEM
Engine runs, but dies
or does not accelerate
properly
Drive belt rolling or
falling off pulleys
Wheels do not spin
with transmission bail
engaged
*If equipped
POSSIBLE CAUSES
Air filter dirty
Fuel filter dirty
Fuel vent plugged
Spark plug dirty/worn
Carburetor vibration
Cooling system dirty/plugged
Spark arrestor* plugged
Pulley not aligned
Belt not tensioned properly
Spindle bearing failed
Transmission engagement cable is out
of adjustment
Transmission belt is slipping
Sprockets are spinning on shafts
Chain is off sprockets
WHEELED TRIMMER
REMEDY
Clean or replace
Replace
Clean or replace
Clean and adjust or replace
Adjust
Clean
Clean or replace
Align pulleys
Tension belt with 70 lbs. of force
Replace bearing
Adjust cable on handle bar or at transmission
See maintenance section on tensioning belt
Check for roll pins and set screws in sprockets
Check sprocket alignment and tension
TROUBLESHOOTING
13