2007 Arctic Cat Four-Stroke Factory Service Manual, Page 171Get this manual
5Remove the oil pump components and inspect for excessive wear and pitting
7Measure the outer bearing race in the rotor timing cover surfaceThe outer bearing race specification is 42.980-43.010 mm (1.692-1.693 inThe clearance specification is 0.030-0.090 mm (0.0012-0.0035 in
8Clean the cover surfaces and components with non-abrasive cleanerLubricate the rotor set with engine oil; then install the rotor set into the cover