Yamaha WR450F(R) Owner's Service Manual page 328

2
1
3 4
1
2
4
1
Accelerator pump
1. Inspect:
2. Inspect:
6
5
Air cut valve
3
1. Inspect:
ASSEMBLY AND INSTALLATION
Carburetor
1. Install:
2. Install:
4 - 14
CARBURETOR
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.
Diaphragm (air cut valve) 1
G
Spring (air cut valve) 2
G
Air cut valve cover 3
G
O-ring 4
G
Tears (diaphragm)/damage → Replace.
Cold starter plunger 1
G
Pilot air jet 1
G
ENG