hi josh,
being a kawasaki it is likely to have replaceable bearings.if the bearings have rusted or seised due to heat related malfunctions then its best to replace them, but if they have just became tight over time then i normally fill the sump up with diesel and let it soak. the diesel works good when it come to un-seizing things. if you let it soak for a few days, and slowly tap it free with a hammer it should be right to go. this method works good on most engines that have seised due to sitting a long time. if they do become free make sure they have the right tolerances and are not loose before starting the engine as this can cause damage.
regards jay
