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Main bearings
To replace the bearings proceed as follows:
- heat the crankcase half in an oven to 100 °C;
- remove the bearing using a drift and hammer;
- install the new bearing (while the crankcase is still hot) keeping it perfectly square in its seat using a
tubular drift that only bears on the outer ring of the bearing;
- allow the parts to cool and check that the bearing is securely fastened to the crankcase half.
Check that the gap between crankcase and fitted bearings is not lower than 0.03 mm, otherwise replace
the crankcase halves.
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