Installing The Valves And Valve Springs - Yamaha MZ360 Service Manual

VALVE
5
a

INSTALLING THE VALVES AND VALVE SPRINGS

The following procedure applies to all of the valves, valve
springs and related components.
1.
Install:
• Valve stem seal
4
3 • Valve "1"
2
• Valve spring "2"
M
• Valve spring retainer "3"
• Valve cotter "4"
1
E
NOTICE
• Do not compress the spring more than necessary.
• Surface "a" with the rounded edges of the valve cot-
ter must face downward (to the valve spring retainer
side) when installing it on top of the valve spring
b
retainer. If surface "b" of the opposite side is facing
downward when the valve cotter is installed, it could
result in the premature wear of the valve cotter.
TIP
• When installing the valve stem seal, install it so that the
c
outer spring "c" does not come off.
• When "I" or "IN" is stamped on the stamped portion "d" of
the valve, install the valve on the intake side of the cylin-
der head, and when "EX" is stamped, install the valve on
the exhaust side of the cylinder head.
d
New
New
Use the valve spring compressor "5" to install the
parts.
Valve spring compressor:
90890-01253
3-43
(Intake side only)
1
2
3
4
5
6
7
8
9
10