TROUBLESHOOTING
HCS-3020 4020
34
X7702243800
© 3/2016 ECHO Inc.
TROUBLESHOOTING
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 car-
buretor
See your Echo
dealer
Spark at
end of plug
wire
No spark
Stop switch
OFF
Electrical prob-
lem
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 0.65mm
(0.026 in.)
Clean or replace
Clean or replace
Replace plug
