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5-4-5
MAIN BEARING
COVER
Install the
main
bearing
cover
to
the
crankcase.
Note:
As
the governor gear
is
mounted on the main
bearing cover side, install the main bearing
cover white checking that
it
meshes with the
teeth of the cam gear. (See Fig.
28.)
Mean-
time,
if
the oil seal need
be
replaced, press-
fit
a
.
new oil' sea/ before installing the main
bearing cover.
Note: When installing main bearing cover, apply oil
to the bearing and oil seal lip. Fit the oil seal
guide over the crankshaft to protect the oil
seal lip
from
damage. Then place the main
bearing cover on.
Check the crankshaft if
its
side clearance
is
0
-
0.2
mm; and
if
not, adjust
it
with the ad-
justing shim. (See Fig.
29.)
Note: Main bearing cover tightening torque:
Note: Fig.
30
shows one
of
the methods measuring
the crankshaft side clearance between the ma-
chined face of the crankcase and adjusting col-
lar.
As
a paper packing
is
used on the machin-
ed face of the crankcase, adjust the clearance
by taking this thickness
of
0.22
mm into ac-
count.
(See
Fig.
30.)
80
-
700
kg-cm
-1
Pay attention to the engagement
of
n
the governor gear and cam gear.
~
Fig.
28
.
Main Bearing Cover
w
Fig.
29
4
Dial
Indicator
1
Ground Surface of Crankcase
(The
surface of the crankcase
is
to be put together with the sur-
face of the main bearing cover.)
1
Fig.
30
-
22
-