Yamaha SRX440 1980 Service Manual page 41

3.
Reassembly and adjustment
C A U T I O N : - - - - - - - - - - - ,
1) Wash all parts in clean gasoline be-
fore assembling.
2)
Always use new a-rings.
3)
Make sure moving parts rotate or
slide smoothly.
4)
Apply grease to contact surfaces of
the throttle shaft.
1980 SRX440
NOTE: - - - - - - - - - - - - -
The pilot screw must not be tightened ex-
cessively.
51 Install the valve seat.
Tightening torque:
5 Nm (0.5 m-kg)
6)
Put the valve needle into the valve seat.
NOTE: - - - - ' - - - - - - - - - - -
After assembling. take care not to allow dust
and dirt to enter.
7)
Float level
(1)
Reinstall components. except for
the float chamber.
(2) Incline the carburetor at 20
~
30°
(so that the end of the float valve
a. Carburetor body
1)
Install the main nozzle. main jet. and
pilot jet.
Tightening torque:
Main nozzle: 5 Nm (0.5 m-kg)
Main jet: 2 Nm (0.2 m-kg)
Pilot jet: 0.8 Nm (0.08 m-kg)
.
2) Install the power jet and power jet cover
bolt.
Tightening torque:
Power jet:
1.8. Nm (0.18 m-kg)
Power jet cover bolt:
4 Nm (0.4 m-kg)
3) Install the throttle stop screw and coil
spring.
Adjustment: See" Low speed tuning."
4) Install the pilot screw and coil spring.
Adjustment: See" Low speed tuning."
4-9
weight), and measure the distance
from the mating suface of the float
chamber and carburetor to the top
of the float using a gauge.
Float level: .
30
±
1 mm (1.18
±
0.04 in)
.
NOTE:-----------~
The float should be just resting on. but not
depressing the spring loaded inlet needle.
1. Float level
(3) If the float level is not within the
specified range. check the valve
seat and needle valve. And replace
any damaged part.