Draining The Fuel; Checking The Vacuum Hose; Checking The Fuel Filter; Disassembling The Vapor Separator - Yamaha F150B Service Manual

Draining the fuel

1. Drain the remained gasoline in the vapor
separator with a drain pan. Loosen the
drain screw a, and then remove the cap
b. Push in the air valve with a screw-
driver.
a
2. Tighten the drain screw a to the speci-
fied torque.
Vapor separator drain screw a:
2 N·m (0.2 kgf·m, 1.5 ft·lb)

Checking the vacuum hose

1. Check the vacuum hose. Replace the
vacuum hose if cracked or damaged.

Checking the fuel filter

1. Check the fuel filter a. Replace the fuel
filter if there is dirt, residue, or external
damage.

Disassembling the vapor separator

1. Remove the float pin a in the direction of
the arrow a.
b
2. Remove the needle valve assembly and
Checking the high-pressure fuel
pump
1. Check the high-pressure fuel pump elec-

Checking the vapor separator

1. Place the cover assembly upside down,
Float height a: 55.0–61.0 mm (2.2–2.4 in)
TIP:
To measure the height of the float, it should
be resting on the needle valve. Do not press
a
the float.
a
a
other components. See exploded dia-
gram (6-29).
trical performance. See "Checking the
high-pressure fuel pump" (5-25).
and then measure the float height a.
a
Vapor separator
0
1
2
3
4
5
6
7
8
9
10
A
6-32