1999 Ski-Doo Factory Shop Manual Volume Three, Page 206Get this manual
Section 06 ELECTRICAL Subsection 02 (IGNITION TIMING)
Select no1 TIMING ADJUSTMENT
1TIMING ADJUST 2ENGINE SERIAL#
Example: Timing mark as verified with timing light at 3500 RPM was too early by 2The correction factor programmed is no4Select correction factor no5This will retard the timing by because the difference between correction factor no4 and no5 is(passing from to1)
A30E20A
Press ENTERNow the display shows the engine timing correction factor that is programmed in the MPEMIn the following example timing correction factor is 4A30E24A