Assembling The Carburetor - Yamaha YZ125 2009 Owner's Service Manual

2. Install:
• Reed valve assembly "1"
• Reed valve spacer "2"
3. Install:
• Carburetor joint "1"
• Bolt (carburetor joint) "2"
Bolt (carburetor joint):
10 Nm (1.0 m•kg, 7.2 ft•lb)

ASSEMBLING THE CARBURETOR

1. Install:
• Throttle stop screw "1"
• Locknut "2"
• Pilot air screw "3"
Note the following installation points:
a. Screw in the pilot air screw until it is lightly
seated.
b. Back out it by the specified number of turns.
Pilot air screw:
2-1/4 turns out
CARBURETOR AND REED VALVE
2. Install:
• Starter plunger "1"
3. Install:
• Main jet holder "1"
• Main jet "2"
• Pilot jet "3"
• Valve seat "4"
• Screw (valve seat) "5"
4. Install:
• Needle valve "1"
• Float "2"
• Float pin "3"
• Screw (float pin) "4"
• Needle jet cover "5"
• After installing the needle valve to the float, in-
stall them to the carburetor.
• Check the float for smooth movement.
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