Help ASAP please

So I just took the stator off and water came out about two caps full. And looks all cruddy in there
 
dirt bike/quad owners manual say to take cover off,
and check for condensation quite frequently.
there is a gasket and rubber plug on them to/to help keep water out.
 
If the flywheel has spun, there is a chance that it may need lapping to stop it doing it again.

The following may help:::

Lapping the flywheel consists of putting some fine valve grinding paste on the taper of the crankshaft, placing the flywheel on, ( without the key), and revolving the flywheel back and forth.

When the flywheel turns more freely as the paste gets broken up, take off the flywheel, wipe out the used paste and inspect.

The grooves should now be flattened out.

If there are still grooves, repeat the operation until good mating surfaces are made.

Be sure to wash off all, and I mean all of the grinding paste.

I like to finalise by using a Duco cutting compound No 3 for the final lap.

Tension the nut to 53 ft lbs, do not use Loctite, it is not the nut that holds it on, it is the pressure applied to the tapers.

Make sure that you have the washer under the nut.