PB-255LN
TROUBLESHOOTING
X7501186403
35
© 07/22 ECHO Incorporated
Engine
starts
hard or
Engine
does not
start
Spark at
end of plug
wire
No spark
Ignition at
STOP position
Electrical
problem
Interlock switch
Move ignition
away from STOP
position.
See your dealer
Spark at
plug
Incorrect gap -
Covered with
carbon -
Fouled with
fuel - Plug
defective
Adjust to
0.65 mm
(0.026 in.)
Clean or replace
plug
Engine
runs, but
dies
or
Engine
does not
acceler-
ate
properly
Air filter
Air filter dirty Normal wear
Clean or replace
Fuel filter
Fuel filter
dirty
Contaminants
or residue in
fuel
Replace filter or
replace fuel
Fuel vent
Fuel vent
plugged
Contaminated
fuel
Clean or replace
Spark plug
Plug dirty or
worn
Normal wear
Clean and adjust
or replace
Carburetor Improper
adjustment
Vibration
Adjust
Cooling
system
Cooling
system dirty
or plugged
Extended oper-
ation in dirty or
dusty locations
Clean
Spark
arrester
screen
Spark
arrester
screen
plugged
Normal wear
Replace
Engine
does not
crank
N/A
Internal engine
problem
See your dealer
ENGINE PROBLEM TROUBLESHOOTING CHART
Problem
Check
Status
Cause
Remedy
