Yamaha 2003 YZ450F, Owner'S Service Manual

Page: 54 / 644

GEN
INFO
1 - 13
DECOMPRESSION LEVER
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.
Order Part name Q’ty Remarks
1 Oil seal 1
2 Torsion spring 1
3 Decompression shaft 1
4 Decompression cable guide 1
5 Flange bolt 1 M 6
×
1.0 [L=14 mm (0.55 in)]
6 Decompression cable 1
7 Decompression lever 1
8 Boot 1
9 Decompression lever holder (upper) 1
10 Collar 1
11 Panhead screw 1 M 5
×
0.8 [L=20 mm (0.79 in)]
12 Nut 1 M 5
×
0.8
13 Decompression lever holder (lower) 1
14 Hexagon bolt 2 M 5
×
0.8 [L=16 mm (0.63 in)]
14
13
11
10
8
7
9
12
6
5
4
1
2
3
T
R
.
.
10 Nm (1.0 m
•
kg, 7.2 ft
•
Ib)
T
R
.
.
7 Nm (0.7 m
•
kg, 5.1 ft
•
Ib)
T
R
.
.
4 Nm (0.4 m
•
kg, 2.9 ft
•
Ib)
B
B
B
B
B
E