TROUBLESHOOTING
3.
After sharpening teeth, check each tooth radius for evidence of a square (sharp) corner. Use the round (rat tail) file to renew the radius.
CUTTING
TOOTH
AREA
SRM-3020T
30º
GULLET
(RADIUS)
CUTTING
TOOTH
RADIUS
TROUBLESHOOTING
Problem
Engine starts hard
ENGINE PROBLEM TROUBLESHOOTING CHART
Check
Fuel at carburetor
Status
No fuel at carburetor
Cause
Fuel strainer or fuel line obstructed
Remedy
Clean or replace
See your dealer or
Engine does not start
No fuel at cylinder
Carburetor See your dealer
OPEN choke
Fuel at cylinder
Engine starts hard
Muffler wet with fuel
Fuel mixture too rich
Clean or replace air filter
Adjust carburetor or
Engine does not start
Spark at end of plug wire
Spark at plug
No spark
Stop switch
OFF - Electrical problem -
Interlock switch
Incorrect gap -
Covered with carbon - Fouled with fuel - Plug defective
See your dealer
Turn switch to ON
See your dealer
Adjust to 0.65mm
(0.026 in.)
Clean or replace plug
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X7502350102
©
2/20
ECHO Incorporated
SRM-3020T
TROUBLESHOOTING
Problem
ENGINE PROBLEM TROUBLESHOOTING CHART
Check Status Cause Remedy
Engine runs, but dies
Air filter
Fuel filter
Air filter dirty Normal wear
Fuel filter dirty
Contaminants or residue in fuel
Clean or replace
Replace filter or replace fuel or
Engine does not accelerate properly
Fuel vent
Fuel vent plugged
Contaminated fuel
Clean or replace
Engine runs, but dies or
Spark plug
Carburetor
Cooling system
Engine does not accelerate properly
Spark arrestor screen
Plug dirty or worn
Normal wear
Improper adjustment
Vibration
Cooling system dirty or plugged
Extended operation in dirty or dusty locations
Spark arrestor screen plugged
Normal wear
Clean and adjust or replace
Adjust
Clean
Replace
Engine does not crank
N/A
Internal engine problem
See your dealer
Fuel vapors are extremely flammable and may cause fire and/or explosion. Never test for ignition spark by grounding spark plug near cylinder plug hole, otherwise serious personal injury may result.
X7502350102
©
2/20
ECHO Incorporated
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