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4. AUXll,lARY PARTS
A. Funnel type breather
Breather chamber of funnel type is
located
an
the rear upper side
of
the upper crank
case.
Inside
the chamber breather body is supported by a spring and back pressure is
guided along
the
direction
as
shown in
the
Figure
separating oil to outside of crank
case.
Here
a check
valv
e
is fitted to avoid outside
vapour
to be sucked.
2
3
5
fI-
- - {
7
a;J
Breather
body
®
Breather
valve body
@
Breather
chamber
®
Breather valve
®
Breather va lve
spring
<V
Breather
support
spring
®
Cott
er
pin
®
Breather valve (plain view)
Fig
.
4
-
1.
B. Kick starter mechanism
Kick spindle pawl
for Mad
el
C72, 77 mates with
the inside groove of low gear
by
pawl spring
to rotate low
gear.
When not
in
kick, the
head
of
pawl
by
kick
spindle
metal bush so that
low g ear attains
free state.
110
is
pressed
dawn
Fig
.
4
-
2.
CD
Kick
starter spin
®
l
ow
gear
comp lete
®
Kick spindle pane
l
For
Model
CB72
,
77, cons
idering
relati
on
with the chassis
,
advance step kick system was
applied.
A piece of gear was set
ins
ide
the R crank
case
cover
to reverse direction
of
rotati
o
n and
can start engine transmitting
rotat
ional
power
to
the
kick
spindle
pawl.
IFig
.
4-31
Fig
.
4
-
3
.
C ronk
case cover
C.
Cam chain tensioner
ill
R.
crank
case cover
compo
®
Ki
ck
storter gear
®
Kick arm
@
Kick
starter pinion
®
Kick
stort
er
spring
®
Clutch lifter thread
compo
Inside
cam chain chamber located at center part of cylinder cam
chain
IOK219-94L1
is
set to transmit
rotat
iona
l
motion
of
crank to cam shaft, and
cam
chain tension
is
applied
to make high
speed
motion
of
cam chain correctly and
smoothly.
Here
the cam
chain
tension works to
supress
waving of chain
by
pressing cam
chain.
In Figure 4-4,
6mm
bolt fitted on the tensioner push bar be loosen,
th
e roller
will be pushed out by a spring
to
give
a
adequate
tension
on the chain.
According
to slackness of chain
adjustment
can
be done by this set
SCrew.
To
make Sure tightness
of
chain,
it
is
favo
rable
to
adjust putting the crank
shaft
at the
lower
dead paint.
11
1
.,
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