Yamaha F50F, Service Manual

Page: 88 / 305

FUEL
Fuel system
4-19
6C13G11
5. Remove the needle valve and other com-
ponents.
Checking the vapor separator
1. Check the needle valve for bends or
wear. Replace if necessary.
2. Check the float for deterioration. Replace
if necessary.
3. Check the filter for dirt or residue. Clean
if necessary.
4. Install the needle valve, float, and float
pin, and then check the float for smooth
operation.
NOTE:
• Do not reuse the float pin, always replace it
with a new one.
• Install the float pin in the direction of the
arrow
a
shown.
• Install the float pin with its tapered end
towards the punch mark
b
on the vapor
separator cover.
5. Check the float height
c
as shown.
Adjust the float height if out of specifica-
tion.
6. Check the float height
d
as shown.
Adjust the float height if out of specifica-
tion.
NOTE:
The float should be resting on the needle
valve, but not compressing it.
Adjusting the float
1. Adjust the stopper
a
of the float by
bending it until the float height
b
is within
specification.
S6D54200
S6C14210
a
b
Float height
c
:
46.6
±
1.0 mm (1.83
±
0.04 in)
Float height
d
:
35.0
±
1.0 mm (1.38
±
0.04 in)
S6C14200
d