Yamaha YZ125X1 Owner's Service Manual page 66

• After installing the needle valve to
the float, install them to the carbure-
tor.
• Check the float for smooth move-
ment.
5. Install:
• Float chamber "1"
• Plate "2"
• Screw (float chamber) "3"
6. Install:
• Jet needle "1"
• Needle holder "2"
To throttle valve 3.
7. Install:
• Throttle cable "1"
• Locknut "2"
Locknut:
4 Nm (0.4 m•kg, 2.9
ft•lb)
• Mixing chamber top "3"
• Spring (throttle valve) "4"
• Ring "5"
• Throttle valve "6"
• While compressing the spring, con-
nect the throttle cable.
• Align the projection "a" on the ring
with the groove "b" in the needle
holder "7".
CARBURETOR AND REED VALVE
8. Install:
• Mixing chamber top "1"
• Screw (mixing chamber top) "2"
To carburetor "3".
After installing, check the throttle grip
for smooth movement
9. Install:
• Air vent hose "1"
• Overflow hose "2"
• Clamp "3"
Pass the air vent hose at the rear (on
the air cleaner side) of the throttle ca-
ble "4".
INSTALLING THE CARBURETOR
1. Install:
• Carburetor "1"
Install the projection between the car-
buretor joint slots.
4-11
2. Tighten:
• Bolt (air filter joint) "1"
Bolt (air filter joint):
2 Nm (0.2 m•kg, 1.4
ft•lb)
• Bolt (carburetor joint) "2"
Bolt (carburetor joint):
2 Nm (0.2 m•kg, 1.4
ft•lb)
3. Clamp:
• Air vent hose "1"
• Overflow hose "2"
Refer to "CABLE ROUTING DIA-
GRAM" section in the CHAPTER
2.
4. Adjust:
• Idle speed
Refer to "ADJUSTINGTHE EN-
GINE IDLING SPEED" section in
the CHAPTER 3.