Yamaha F4B, Service Manual

Page: 73 / 202

6-6
Fuel tank
0
1
2
3
4
5
6
7
8
9
10
A
2. Disconnect the fuel hoses
c
and
d
.
3. Remove the primer pump
e
.
4. Remove the holder
f
, fuel strainer
g
,
fuel hose
c
, and primer pump
e
.
5. Remove the fuel hoses
d
,
h
, and
i
.
Checking the fuel tank
1. Check the fuel tank. Replace if cracked
or damaged.
Checking the fuel joint
1. Check the fuel joint. Replace if cracked or
damaged.
2. Connect the special service tool
a
to the
fuel joint outlet
a
.
3. Apply the specified positive pressure.
Replace the fuel joint if the specified
pressure cannot be maintained for at
least 10 seconds.
Checking the fuel strainer (tank side)
1. Check the fuel strainer. Clean it using
straight gasoline if there is foreign mate-
rial.
Checking the fuel strainer
1. Check the fuel strainer. Replace if
cracked or damaged.
2. Connect the special service tool
a
to the
fuel inlet
a
.
3. Block the fuel outlet
b
using a rubber
plug
b
, and then apply the specified
positive pressure. Replace the fuel
strainer if the specified pressure cannot
be maintained for at least 15 seconds.
c
e d
c
g
e
f
h
i
d
Vacuum/pressure pump gauge set
a
:
90890-06756
Specified positive pressure:
50.0 kPa (0.50 kgf/cm 2 , 7.3 psi)
50 0
a
a