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12-4-6 INSTALLING THE TAPPETS and CAMSHAFT
Install the tappets. and then the camshaft.
NOTE: Align the timing mark at the base of the cam gear
with the timing mark of the crank gear. If the valve timing
is set incorrectly, the engine will not run or operate proper-
ly. (See Fig. 72-75.)
NOTE: If the intake and exhaust valves are installed in
reverse order, tappet clearance will be incorrect.
Fig. 72-75
12-4-7 INSTALLING THE MAIN BEARING COVER
Install the main bearing cover to the crankcase.
NOTE:
The governor gear is already mounted to the bearing cover; therefore, it is necessary to confirm that the governor
gear is meshed with the cam gear. (See Fig. 72-76.)
If the oil seal requires replacement, pressure-fit the new oil seal in position before installing the main bearing cover.
NOTE: Prior to installation, apply oil to the bearing and oil seal.
Apply a small amount of oil to the cover fitting face,
as specified, in preparation for installing the bearing cover packing.
Place the oil seal guide over the crankshaft so that the
oil sea7 lip will not be damaged during installation.
Make sure that the side clearance of the crankshaft is within 0 to 0.2mm.
If necessary, adjust the clearance, using the adjusting collar.
(see Fig. 72- 7 7.)
NOTE:
Torque for the main bearing cover: 80 - 7 00 kg-cm.
MAIN BEARING COVER.
fY;ie;
GOVERNOR GEAR
‘-
Fig. 72-77
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