Troubleshooting - Echo PB-760 LN H/T Operator's Manual

PB-760 LN H/T

TROUBLESHOOTING

Problem Check
Fuel at carburetor
Fuel at cylinder
Engine cranks -
starts hard/
doesn't start
Spark at end of
plug wire
Spark at plug
Air filter
Fuel filter
Engine runs,
Fuel vent
but dies or
does not Spark Plug
accelerate
Carburetor
properly
Cooling System
Spark Arrestor
Screen
Engine does
N/A
not crank
Engine runs, Blower pipe
blower doesn't
work or is
weak/uneven
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.
X7531125002
© 03/2013 ECHO Inc.
ENGINE PROBLEM TROUBLESHOOTING CHART
Status
No fuel at carburetor
No fuel at cylinder
Muffler wet with fuel
No spark
No spark
Air filter dirty
Fuel filter dirty
Fuel vent plugged
Plug dirty/worn
Improper adjustment
Cooling system
dirty/plugged
Spark arrestor screen
plugged
N/A
Pipe clogged
Pipe loose
Pipe damaged
TROUBLESHOOTING
Cause
Fuel strainer clogged
Fuel line clogged
Carburetor
Carburetor
Fuel Mixture too rich
Stop switch off
Electrical problem
Interlock switch
Spark gap incorrect
Covered with carbon
Fouled with fuel
Plug defective
Normal wear
Contaminants/residues
in fuel
Contaminants/residues
in fuel
Normal wear
Vibration
Extended operation in
dirty/dusty locations
Normal wear
Internal engine problem
Build-up of debris
Vibration
Wear/Misuse
Remedy
Clean or replace
Clean or replace
See your Echo dealer
See your Echo dealer
Open choke
Clean/replace air filter
Adjust carburetor
See your Echo dealer
Turn switch to ON
See your Echo dealer
See your Echo dealer
Adjust to .65mm (0.026 in.)
Clean or replace
Clean or replace
Replace plug
Clean or replace
Replace
Clean or replace
Clean and adjust or replace
Adjust
Clean
Replace
See your Echo dealer
Unclog
Tighten
Replace
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