Yamaha F50D Servise Manual - page 137
6-16
0
1
2
3
4
5
6
7
8
9
10
A
Assembling the carburetor
1.
Install the main nozzle
1
, a new O-ring
2
, plug
3
, pilot jet
4
, and main jet
5
to
the carburetor body.
2.
Install the needle valve
6
, float
7
, float
pin
8
, and screw
9
, and then check the
float for smooth operation.
TIP:
9
Hook the needle valve
6
into the slot
a
on
the float
7
, and then install it into the valve
seat
b
.
9
Install the float pin
8
into the slit
c
on the
carburetor body and lock it with the screw
9
.
3.
Install the spring
0
, a new O-ring
q
, and
pilot screw
w
, turn it in until it is lightly
seated, then out the specified number of
turns.
Installing the carburetor
1.
Install the carburetors to the power unit.
See “Intake silencer” (6-11).
Prime Start plunger length
a
after supply-
ing power (reference data):
24.6 mm (0.97 in) at 20 °C (68 °F)
a
B
L
1
3
4
5
2
Pilot screw setting:
2 1/4 ± 1/2 turns out
(except for tamperproof type)
9
8
7
6
a
c
c
b
w
q
0
Carburetor unit