Use and Care Manual

TROUBLESHOOTING EB770RT
36 X7531127000
© 10/19 ECHO Incorporated
Engine
starts
hard
or
Engine
does not
start
Fuel at
cylinder
No fuel at
cylinder
Carburetor See your dealer
Muffler wet
with fuel
Fuel mixture
too rich
OPEN choke
Clean or replace
air filter
Adjust carburetor
See your dealer
Spark at
end of plug
wire
No spark
Ignition at
STOP position
Electrical prob-
lem
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
0.65mm (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
arrestor
screen
Spark arres-
tor 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