-４８-
8.
Carburetor
8-3 Inspection
7) Main Check Valve
Make sure to check the main check valve in
case fuel is not supplied though the priming tic
when operated.
Press the vinyl pipe (inner diameter:
φ
5mm)
against the main check valve and blow and
suck with mouth.
[A]: Stop by blowing
[B]: Open by sucking
Main check valve has no failure.
In case of failure, soak the body assy. into
gasoline for about 10 minutes and repeat
blowing and sucking several times. If this is not
successful, replace the body assy.
NOTE:
Do not clean the main check valve with
compressed air. If the main check valve is
cleaned by compressed air, it may not
function properly.
8) H-needle
Remove the limiter cap with the
limiter cap tool
(see page 50).
Remove the H-needle, check the wear and
damage of the tip and screw portions and if
necessary replace it with a new one.
Clean the clogging of the fuel passage of the
carburetor body. When cleaning, remove the
throttle valve and spray the carburetor cleaner
from the main nozzle side and the H-needle
mounting hole side.
NOTE:
In this carburetor, the fuel passage at the
tip of the needle is narrower than the
conventional carburetor. Therefore, to
prevent clogging, clean the passage
securely.
When using a fuel with a high mixing ratio
of oil, clogging is likely to be caused by oil
sludge and dust, so we recommend mixing
ratio gasoline 50 : FD registerde oil 1.
Plastic Pipe
Main Check Valve
H-needle
O-ring
Carburetor
Cleaner
Main
Nozzle
Body
H-needle Mounting Hole
Body Assy.
[A]
[B]
