Crankshaft Removal Procedure

Crankshaft Removal Procedure





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 pin (1) from the nose of the crankshaft.