1985-1995 Polaris ATV and Light Utility Hauler Service Manual, Page 255Get this manual
ENGINES Crankshaft Alignment When the crankshaft runout exceeds .005" (.15 mm) it must be straightened or replacedTo straighten crankshaft the crank wheel(s) must be relocated on the lower rod pinThe four basic movements which need to be made to realign the crankshaft are listed below1If the dial indicators are moving in the same direction and approximately the same amount while the shaft is rotated, the crankshaft has twisted on the lower rod pinTo correct this, remove the shaft from the fixture and strike the crank wheel on the high spot (A)This will rotate the wheel on the lower rod pin
2If the right side indicator is moving more than the left indicator while turning the shaft, and the high spot is found with the rod in this position (see photo at right), the crankshaft wheels will have to be squeezed togetherRemove the shaft from the fixtureLocate the high spot and squeeze directly opposite from it using large channel lock pliers or viseArrows show direction of force to be applied