SRM-3020 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
30º
GULLET
(RADIUS)
CUTTING
TOOTH
RADIUS
TROUBLESHOOTING
Problem
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
No fuel at cylinder
Carburetor See your dealer
OPEN choke
Engine starts hard or
Engine does not start
Fuel at cylinder
Spark at end of plug wire
Spark at plug
Muffler wet with fuel
No spark
Fuel mixture too rich
Clean or replace air filter
Adjust carburetor
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
X7502350002
©
2/20
ECHO Incorporated
43
TROUBLESHOOTING SRM-3020
Problem
ENGINE PROBLEM TROUBLESHOOTING CHART
Check Status Cause Remedy
Air filter
Air filter dirty
Normal wear Clean or replace
Engine runs, but dies or
Fuel filter
Fuel vent
Spark plug
Fuel filter dirty
Fuel vent plugged
Plug dirty or worn
Contaminants or residue in fuel
Contaminated fuel
Normal wear
Replace filter or replace fuel
Clean or replace
Clean and adjust or replace
Engine does not accelerate properly
Carburetor
Cooling system
Spark arrestor screen
Improper adjustment
Cooling system dirty or plugged
Spark arrestor screen plugged
Vibration
Extended operation in dirty or dusty locations
Normal wear
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.
44
X7502350002
©
2/20
ECHO Incorporated
