4-
11
ROCKER ARM
I
Rocker arms are made from forged steel
and are wholly sintered.
A
screw for adjusting valve clearance is
provided at the end
of
rocker arm.
Rocker arms are lubricated
by
the oil mist
contained
in
the breathing air from
crankcase.
(See
Fig. lo.)
4-
12
ROCKER COVER
Rocker cover is made from steel sheet.
A
breather plate
is
installed in the rocker
cover to breath air into intake port.
(See Fig.
1
1.)
4-
13
AUTOMATIC DECOMPRESSION
SYSTEM
Automatic decompression system
is
com-
posed
of
a release lever and a flyweight
assembled to the comshaft.
Below
the predetermined speed, the release
lever
lifts
the exhaust tappet slightly to
release compression.
(See
Fig. 12.)
FIG.
10
FIG.
11
/-
FIG.
12
-8-
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