2005 Ski-Doo REV Series Shop Manual, Page 303Get this manual
Section 07 ELECTRICAL SYSTEM Subsection 01 (IGNITION SYSTEM)
MODIFY? YES NO
TRANSFER PGMR MPEM
A30E27A
A00A42A
If the new correction factor selected above is the good one select NO and press ENTEROtherwise select YES to choose an other correction factor
During very short period of time the following message will appear
1TIMING ADJUST 2ENGINE SERIAL# AT N