Dear Valued Customer:

Thank you for your Email. We are the O.S. service center in North
America.

If you have nothing mounted to the engine (flywheel, clutch, etc), then
it's normal for the crank to move in and out of the bearings. When you
get the flywheel/clutch assembly properly-mounted, there should be
virtually no fore-and-aft movement of the crank.

We hope you find this information helpful. Should you have any further
questions or concerns, please do not hesitate to contact us at this
email address. (Please be sure to copy all previous emails into any
future questions.)

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Anyway i installed my clutch setup and their is no more movement. problem solved
thanks to everyones input