2002 Bombardier Quest 650XT Service Manual, Page 359Get this manual
Section 03 ENGINE Subsection 07 (LUBRICATION SYSTEM)
Check inner rotor for corrosion pin-holes or other damagesIf so, replace oil pump shaft assemblyBe sure to also check oil pump housing and coverIf damaged, replace the complete oil pump assembly
If clearance between the outer rotor and its bore in the oil pump exceeds the tolerance, replace the complete oil pump assemblyUsing dial indicator, measure side wear as shownR610motr58A
1Pittings on the teeth
Using feeler gauge, measure the clearance between inner and outer rotorsR610motr60A
1Oil pump housing surface 2Dial indicator