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Group 21 Engine Body
Measuring camshaft end play
Use a dial gauge to measure the end play of the cam-
shaft to which the camshaft gear is installed. If the
end play exceeds the service limit, replace the thrust
plate.
Camshaft end play, mm [in]
Standard clearance ... 0.10–0.25 [0.0039–0.0098]
Service limit .............. 0.40 [0.0157]
Replacing camshaft bushings
Install the bushings in the crankcase, then secure
them in place with the set screws. Before tightening
the screws, be sure that the screw holes in the bush-
ings and crankcase are aligned and that the oil holes
in the bushings are aligned with those leading to the
oil gallery in the crankcase. Use a wide bushing as
the bearing for the rear section, and insert it in the
correct attitude.
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