Assembling The Carburetor; Installing The Carburetor - Yamaha F50D Servise Manual

a
Prime Start plunger length a after supply-
ing power (reference data):
24.6 mm (0.97 in) at 20 °C (68 °F)

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.
5
4
2. Install the needle valve 6, float 7, float
pin 8, and screw 9, and then check the
float for smooth operation.
L
B
3
2
1
7
b
TIP:
Hook the needle valve 6 into the slot a on
9
the float 7, and then install it into the valve
seat b.
Install the float pin 8 into the slit c on the
9
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.
Pilot screw setting:
2 1/4 ± 1/2 turns out
(except for tamperproof type)

Installing the carburetor

1. Install the carburetors to the power unit.
See "Intake silencer" (6-11).
Carburetor unit
a
8
6
9
c
c
0
q
w
6-16
0
1
2
3
4
5
6
7
8
9
10
A