4-8
GOVERNOR
The governor is a centrifugal flyweight type which permits
constant operation
at
the selected speed against load varia-
tions. (See
Fig.
9.)
4-9
BALANCER
The balancer is assembled with the main bearing cover. Un-
balanced moments
of
inertia generated in vertical and hori-
zontal directions by the crankshaft, piston and connecting
rod are balanced by the balancer whxh rotates at the same
rate as the crankshaft in opposite direction thereto, thus re-
ducing vibration
due
to unbalanced moments
of
inertia.
(See
Fig.
10.)
4-10
DECOMPRESSION DEVICE
The intake cam has a special profile and the intake valve is sligh
of
compressed air out to make starting easy. (See
Fig.
11
.)
EXHAUST TAPPET
IN
TAPPET
'.O.
EXHAUST-CAM
DECOMP
LIFT
SHAFT
SIDE
Fig.
9
Fig.
10
.tly raised during the compression stroke to let a slight amou
IN
TAPPET
IN
CAM
Fig.
I
1
-7-
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