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EB790/RT
2.
Turn adjustment screw until
throttle trigger free play is
4 - 6 mm (3/16-1/4 in.).
3.
After adjustment, squeeze and
release throttle trigger several
times to verify carburetor
throttle shaft has full range of
movement from idle to wide
open throttle positions.
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
Fuel at
carburetor
Engine
starts
hard or
Engine
Fuel at
does not
cylinder
start
X7501201900
© 10/23 ECHO Incorporated
Status
Fuel strainer or
No fuel at
fuel line
carburetor
obstructed
No fuel at
Carburetor
cylinder
Muffler wet
Fuel mixture
with fuel
too rich
TROUBLESHOOTING
4 - 6 mm
(3/16 - 1/4 in.)
Cause
Clean or replace
See your dealer
See your dealer
OPEN choke
Clean or replace
air filter
Adjust carburetor
See your dealer
Remedy
45
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