Starter Plunger/Accelerator Pump; Carburetor Assembly And Installation - Yamaha YZ426F(M)/LC Owner's Service Manual

CARBURETOR
Starter plunger
1. Inspect:
Cold starter plunger 1
Hot starter plunger (red) 2
Wear/damage → Replace.
Accelerator pump
1. Inspect:
Diaphragm (accelerator pump) 1
Spring 2
Cover 3
O-ring 4
Tears (diaphragm)/damage →
Replace.
Dirt → Clean.
ASSEMBLY AND INSTALLATION
Carburetor
1. Install:
Hot starter plunger (red) 1
Cold starter plunger 2
2. Install:
Main air jet 1
Pilot air jet 2
Intake joint 3
3. Install:
Starter jet 1
Pilot jet 2
Spacer 3
Needle jet 4
Main jet 5
4 - 13
ENG