Yamaha F5A - Checking the Primer Pump; Installing the Primer Pump

6-7
FUEL
Fuel system
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.
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.
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.
5. Install the primer pump j to the holders
l.
6. Connect the fuel hose a, and then
fasten it using the clamp g.
7. Connect the fuel hose h, and then
fasten it using the clamp g.
Leakage tester a: 90890-06840
Specified positive pressure:
200.0 kPa (2.00 kgf/cm
2
, 29.0 psi)
Leakage tester a: 90890-06840
Specified positive pressure:
166.7 kPa (1.667 kgf/cm
2
, 24.2 psi)
b
a
b
a
b
b
a
a
b
c
e
a
d
a
b
h
i
g
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f
j
k
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a