Generic Race 50, Service Manual

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24
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Spark plug electrode wet Spark plug electrode dry
Check carburetor for flooding Drip a little gasoline into cylinder to
perform experimental starting
1. Check between needle
valve and valve seat of
carburetor float for ajar
position caused by foreign
materials
2. Check cone of float
needle valve of carburetor
for steps caused by wear
3. Check for broken
carburetor float
4. Check carburetor float
for insufficient height
Check air cleaner
for clogging
Engine shuts down
in a very short time
after start
Engine can
continue to work
after start
Inside of carburetor
clogged or float
height excessive
Carburetor
starting device
(i.e. starting
richer system)
malfunctioning
1. Check all joints outside
engine for air leak
2. Check for the piston ring
locked in groove or having
insufficient elastic force
3. Check piston ring and
cylinder for wear
1. Check breather on
fuel tank cap for
clogging
2. Check fuel filter and
fuel cock for clogging
3. Check fuel cock for
proper operation
4. Check oil inlet on
carburetor for clogging
5. Check carburetor
float for height excess
Remove spark
plug for
inspection