Table of Contents
Advertisement
4·13 FUEL AND LUBRICATION SYSTEM
INSPECTION
Check the following items for any damage.
*
Pilot jet
*
Needle valve
*
Main jet
*
Starter jet
*
Main air jet
*
Gasket and a-ring
*
Pilot air jet
*
Throttle shaft oil seal
*
Needle jet air bleeding hole
*
Diaphragm
*
Float
*
Pilot outlet and by-pass holes
NEEDLE VALVE INSPECTION
If foreign matter is caught between the valve seat and the
needle, the gasoline will continue flowing and cause it to
overflow. If the seat and needle are worn beyond the per-
missible limits, similar trouble will occur. Conversely, if the
needle sticks, the gasoline will not flow into the float cham-
ber. Clean the float chamber and float parts with gasoline.
If the needle is worn as shown in the illustration, replace
it together with a valve seat. Clean the fuel passage of the
mixing chamber with compressed air.
FLOAT HEIGHT ADJUSTMENT
To check the float height, invert the carburetor body, with
the float arm kept free, measure the height
@
while float
arm is just in contact with needle valve by using calipers.
Bend the tongue as necessary to bring the height
@
to this value.
Float height@: 14.7±1.0 mm (0.58±0.04 in)
.root,
09900-20102: Vernier calipers
CORRECT
INCORRECT
THROTTLE POSITION SWITCH (Except for E-03,18,24,28 and 33 models)
• Remove the fuel tank. (Refer to page 4-3.)
Inspect the throttle position switch for continuity with pock-
et tester. If any abnormality is found, replace the respec-
tive switch assemblies with new ones.
Cib
09900-25002: Pocket tester
~
Tester knob indication: X 1
Q
range
~
Position
B
B
ON (full-throttle)
0
-0
OFF
B: Black
NOTE:
When making above test, it is not necessary to start the
engine.
Advertisement
Table of Contents
