Yamaha YZ450F(S) Owner's Service Manual page 266

2
1
3 4
1
Starter plunger
1. Inspect:
Accelerator pump
1. Inspect:
2. Inspect:
6
5
ASSEMBLY AND INSTALLATION
Carburetor
1. Install:
2. Install:
4 - 14
CARBURETOR
Cold starter plunger 1
G
Hot starter plunger 2
G
Wear/damage → Replace.
Diaphragm (accelerator pump) 1
G
Spring 2
G
Cover 3
G
O-ring 4
G
Push rod 5
G
Tears (diaphragm)/damage → Replace.
Dirt → Clean.
Throttle shaft 1
G
Spring 2
G
Lever 1 3
G
Spring 1 4
G
Lever 2 5
G
Spring 2 6
G
Dirt → Clean.
Cold starter plunger 1
G
Pilot air jet 1
G
ENG