5 - 4 - 5 MAINBEARING COVER
Install the main bearing cover to the crankcase.
Note: As the governor gear is mounted on themain
bearing coverside, installthemain bearing cover white checking that it meshes with the
teeth ofthe camgear.(See Fig. 28.) Mean- time, if the oil sealneed 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 oilseal guide over the crankshaft toprotect the oil seal lip from damage. Then place the main bearing cover on.
-thecrankshaft if its sideclearance is 0 0.2 mm; and if not, adjust it with the ad- justing shim. (See Fig. 29.)Check
Note: Mainbearing cover tightening torque: 80 - 700
Note: Fig. 30 shows one of the methods measuring the crankshaft side clearancebetween the ma- chined face o f the crankcase and adjusting col- lar. As a paper packing is used on themachin- ed face of the crankcase, adjust the clearance by taking this thickness of 0.22 mm into ac- count. (See Fig. 30.)
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Fig. 28
. Main BearingCover
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Fig. 29
4Dial Indicator
1Ground 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
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