5-4-3
ASSEMBLING
ORDER
and
PRECAUTIONS
-
1) Place the tappets into the crankcase.
NO,TE: The intake and exhaust tappets are the
same, but mark them differently when
disassembling because of different valve
clearances; and fit them into their origi-
nal place. Apply oil
to
the tappets before-
hand.
-
2)
Assemble the crankshaft and camshaft at the
same time.
NOTE: The timing marks are punched on the
crankshaft gear and the camshaft gear.
Match these timing marks when assembl-
ing. (See Fig.
22.)
3)
Assemble the connecting rod and the piston.
NOTE: The piston
is
offset. Assemble
it
so
that
the square
(0)
on
the piston top matches
the
@
MAG mark on the connecting.rod.
(See Fig.
23.)
CAUTION: When inserting the piston pin and
fitting the clip on, be careful not to
damage the piston surface.
I
Fig.
22
Fig.
23
4) Fit the piston rings on
the
piston.
NOTE: Each piston ring has
a
punched mark
on
its
open end. These marks have to face upward when
assembled.
NOTE: When
the
piston rings are fitted in place, make sure that their ends
are
staggered as shown
in
Fig.
24.
Be careful not to install them in the wrong groove. (See Figs.
24
and
25.)
Thrust
Side
Top
Ring
(Chrome-plated)
Second
Ring
(Undercut)
Oil
Ring
(Chrome-plated)
(Assembly Type)
Fig.
24
-
21
-
Fig.
25
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