Disassembling The Vapor Separator; Checking The High-Pressure Fuel Pump; Checking The Vapor Separator - Yamaha F150A Service Manual

Disassembling the vapor separator

1. Remove the pressure regulator "1".
1
2. Remove the cover "1", gasket "2", and fil-
ter holder "3".
2
3. Disconnect the lead coupler "a", and then
remove the high-pressure fuel pump "1",
filter "2", and grommet "3".
a
4. Remove the pin "1" in the direction of the
arrow, and then remove the float "2".
Vapor separator and high-pressure fuel pump
1
3
2
a
1
3
6-43
5. Disconnect the lead coupler "a".
6. Remove the needle valve assembly "1".
1
7. Remove the plates "1" and "2".
2
Checking the high-pressure fuel
pump
1. Check the electrical performance of the
high-pressure fuel pump. See "Checking
the high-pressure fuel pump" (5-18).

Checking the vapor separator

1. Check the needle valve. Replace the
needle valve assembly if bent or worn.
1
2
a
1