Checking The Primer Pump; Installing The Primer Pump - Yamaha F4B Service Manual

FUEL
a
b b
a
Leakage tester a: 90890-06840
Specified positive pressure:
200.0 kPa (2.00 kgf/cm

Checking the primer pump

1. Connect the special service tool a to the
primer pump inlet a.
2. Block the fuel outlet b using a rubber
plug b.
3. Apply the specified positive pressure.
Replace the primer pump if the specified
pressure cannot be maintained for at
least 30 seconds.
b
b
a
a
Leakage tester a: 90890-06840
Specified positive pressure:
166.7 kPa (1.667 kgf/cm

Installing the primer pump

1. Connect the fuel hoses a, b, and c to
the joint d, and then fasten them using
the plastic ties e.
6-7
Fuel system
2 , 29.0 psi)
2 , 24.2 psi)
a
e
c
2. Install the clamps f and g temporarily
onto the fuel hoses a, b, c, and h,
and then connect the fuel hose to the fuel
strainer i and primer pump j.
3. Fasten the fuel hose b, c and h using
the clamps f.
4. Install the holder k.
g
h
5. Install the primer pump j to the holders
l.
6. Connect the fuel hose a, and then
fasten it using the clamp g.
g
7. Connect the fuel hose h, and then
fasten it using the clamp g.
d
b
f
g
a
b
f
k
j
f
j a
l
i
c