SRM-266/S
TROUBLESHOOTING
© 3/2013 ECHO Inc.
X7502026002
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TROUBLESHOOTING
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.
ENGINE PROBLEM TROUBLESHOOTING CHART
Problem Check
Status
Cause
Remedy
Engine cranks -
starts hard/
doesn’t start
Fuel at carburetor
No fuel at carburetor
Fuel strainer clogged
Fuel line clogged
Carburetor
Clean or replace
Clean or replace
See your Echo dealer
Fuel at cylinder
No fuel at cylinder
Carburetor
See your Echo dealer
Muffler wet with fuel
Fuel Mixture too rich
Open choke
Clean/replace air filter
Adjust carburetor
See your Echo dealer
Spark at end of
plug wire
No spark
Stop switch off
Electrical problem
Interlock switch
Turn switch to ON
See your Echo dealer
See your Echo dealer
Spark at plug
No spark
Spark gap incorrect
Covered with carbon
Fouled with fuel
Plug defective
Adjust to .65mm (0.026 in.)
Clean or replace
Clean or replace
Replace plug
Engine runs,
but dies or
does not
accelerate
properly
Air filter
Air filter dirty
Normal wear
Clean or replace
Fuel filter
Fuel filter dirty
Contaminants/residues
in fuel
Replace
Fuel vent
Fuel vent plugged
Contaminants/residues
in fuel
Clean or replace
Spark Plug
Plug dirty/worn
Normal wear
Clean and adjust or replace
Carburetor Improper
adjustment
Vibration
Adjust
Cooling System
Cooling system
dirty/plugged
Extended operation in
dirty/dusty locations
Clean
Spark Arrestor
Screen
Spark arrestor screen
plugged
Normal wear
Replace
Engine does
not crank
N/A
N/A
Internal engine problem See your Echo dealer
