Yamaha F150A, Service Manual

Page: 186 / 493

6-9
Fuel filter
Disassembling the fuel filter
assembly
1. Remove the fuel cup assembly “1”, O-
ring “2”, and fuel filter element “3”.
Checking the fuel filter element
1. Check the fuel filter element. Replace if
there is dirt or residue.
Checking the fuel cup assembly
1. Check the fuel cup assembly. Clean
using straight gasoline if there is foreign
material or replace if cracked.
When cleaning the fuel cup assembly, do
not remove the clip and float.
2. Check the water detection switch. See
“Checking the water detection switch” (5-
16).
Checking the primer pump
1. Connect the special service tool “1” to
the primer pump inlet “a”.
2. Block the fuel outlet “b” using a rubber
plug “2”.
3. Apply the specified positive pressure.
Replace the primer pump if the specified
pressure cannot be maintained for 30
seconds or more.
Assembling the fuel filter assembly
1. Install the fuel filter element “1”, a new
O-ring “2”, and the fuel cup assembly “3”,
and then tighten the fuel cup assembly
“3” to the specified torque.
Vacuum/pressure pump gauge set “1”:
90890-06945
Specified negative pressure:
80.0 kPa (0.80 kgf/cm
2
, 11.6 psi)
6P3
6P3
1
b a
2
1
3
2
Leakage tester “1”: 90890-06840
Specified positive pressure:
166.7 kPa (1.67 kgf/cm
2
, 24.2 psi)
b
a
1
2