2004 Skidoo ZX Series Service Manual, Page 252Get this manual
Section 05 ENGINES (4-TEC) Subsection 05 (LUBRICATION SYSTEM)
CAUTION: The outer rotor no28 and the oil pump shaft with inner rotor no27 are marked on the upper sideWhen installing, make sure that the position of the outer rotor is not reversed1
R1004motr50A
R1004motr51A
1Oil pump cover surface 2Dial indicator
1Marking
NOTE: At installation always replace the oil seal no26 fitted in the oil pump coverPush oil seal in place by using the oil seal pusher (PN 529 035 911)
R1004motr62A