Yamaha YZ450F Manuel D'atelier Du Proprietaire page 54

DECOMPRESSION LEVER
An auto decompression device is standard equipment on the machine. There is no need to operate
the decompression lever in normal use because the auto decompression device is working.
Use the decompression lever when the engine fails to start or when you want to step down the kick
starter with a lighter force.
For engine starting failure, refer to "STARTING AND BREAK-IN".
Installation (Supplied for Europe and optional for other destinations)
For installation, follow the steps below.
B
1
2
3
E
Order
1 Oil seal
2 Torsion spring
3 Decompression shaft
4 Decompression cable guide
5 Flange bolt
6 Decompression cable
7 Decompression lever
8 Boot
9 Decompression lever holder (upper)
10 Collar
11 Panhead screw
12 Nut
13 Decompression lever holder (lower)
14 Hexagon bolt
DECOMPRESSION LEVER
B
6
5
10 Nm (1.0 m kg, 7.2 ft
•
4
7 Nm (0.7 m
B
Part name
8
B
Ib)
•
7
kg, 5.1 ft Ib)
• •
9
B
12
Q'ty
1
1
1
1
M 6 × 1.0 [L=14 mm (0.55 in)]
1
1
1
1
1
1
M 5 × 0.8 [L=20 mm (0.79 in)]
1
M 5 × 0.8
1
1
M 5 × 0.8 [L=16 mm (0.63 in)]
2
1 - 13
GEN
INFO
4 Nm (0.4 m kg, 2.9 ft
•
14
13
11
10
Remarks
Ib)
•