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Troubleshooting, Troubleshooting hc-152 – Echo HC-152 User Manual

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© 4/2013 ECHO Inc.

TROUBLESHOOTING

HC-152

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