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Moist electrode of spark plug
Check whether there is oil
spillover in the carburetor
Y
1.
Check whether the float
needle valve and the valve
seat are firmly combined
2.
Check
whether
conical
surface
of
float
needle valve is abrasive
stepped.
3.
Check
whether
carburetor float is broken
4.
Check
whether
carburetor float is too low
Remove
spark
plug and check it
N
Check whether air
filter is blocked
the
as
the
the
1. Check leakage on outer
connections
of
engine.
2. Check whether the piston
ring is seized in the
groove or whether it has
enough elasticity.
3. Check abrasion of the
piston
ring
and
cylinder.
Dry electrode of spark plug
Drop a little gasoline into the cylinder for trial startup
Flameout shortly
after startup
The carburetor is blocked
inside or the float is too
high
20
1. Check whether the
the
air vent in fuel tank
cover is blocked.
2. Check whether the
fuel filter and the
fuel
switch
blocked.
3. Check whether the
the
fuel switch works
normally.
4. Check whether the
oil
hole
carburetor
blocked.
5. Check whether the
carburetor float is
too high.
Continue to work
after startup
Startup
device
carburetor (startup &
enrichment
system)
is at fault
are
of
the
is
of
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