Crankshaft and Bearings Removal

1. Before removing the crankshaft, measure the crankshaft end play using the following procedure:
1.1 Reinstall the lower crankcase.
1.2 Place a dial indicator at the crankshaft nose.
1.3 Gently force the crankshaft to the extreme front and rear positions with a pry tool while monitoring the movement of the dial indicator.
1.4 The crankshaft end play should not exceed 0.05-0.5 mm (0.002-0.020 inch).
1.5 If the specifications are exceeded, replace the thrust bearing.
1.6 If a new thrust bearing does not bring the tolerances within specification, replace the crankshaft.
1.7 Remove the lower crankcase.

2. Locate or fabricate two V-blocks to support the crankshaft.
3. Using two hands, lift the crankshaft straight up from the engine block.
4. Place the crankshaft on the v-blocks, in a secure place.





5. Remove the crankshaft sprocket drive key (1) from the nose of the crankshaft.