Troubleshooting - Echo PB-2520 Operator's Manual

PB-2520

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
Engine
starts
hard Fuel at
or Engine carburetor
does not
start
Fuel at
cylinder
Engine
starts
hard
or
Spark at
Engine
end of plug
does not
wire
start
Spark at
plug
X7501190003
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Status
Fuel strainer or
No fuel at
fuel line
carburetor
obstructed
No fuel at
Carburetor
cylinder
Muffler wet Fuel mixture
with fuel too rich
Ignition at
STOP position
Electrical prob-
lem
Interlock switch
No spark
Incorrect gap -
Covered with
carbon -
Fouled with
fuel - Plug
defective
TROUBLESHOOTING
Cause
Clean or replace
See your dealer
See your dealer
OPEN choke
Clean or replace
air filter
Adjust carburetor
See your dealer
Move ignition
away from STOP
position.
See your dealer
Adjust to
0.65mm (0.026
in.)
Clean or replace
plug
Remedy
35