2004 Skidoo ZX Series Service Manual, Page 440Get this manual
Section 09 ELECTRICAL SYSTEM Subsection 01 (IGNITION TIMING)
MPEM Programmer
593 and 693 Engine Types Timing can also be changed using the MPEM programmer (PN 529 035 878)Connect 9-volt adaptor (PN 529 035 675) to supply cable (PN 529 035 869) and supply cable to diagnostic connector, located on right side of the vehicle529 035 675
A29E0WA
TIMING ADVANCED BY ABOUT 2
CHANGING TIMING
All Engine Types NOTE: To change the timing on the SDI engines, the VCK is mandatoryThe MPEM programmer cannot be used with these engines529 035 869
A32E2VA
VCK (Vehicle Communication Kit)