Bombardier SeaDoo 2001 factory shop manual, Page 358Get this manual
Section 10 ELECTRICAL SYSTEM Subsection 02 (IGNITION SYSTEM)
NOTE: If engine fail to start and as soon engine stops revving (startstop button has been released), Fixed Timing function is disabledTo reactivate function, repeat complete procedure
Ignition timing is set at 12 BTDC at any RPM, when the Fixed Timing Function is active947 Engines Through the MPEM programmer, the ignition timing can be advanced up to or retarded up to 4The MPEM programmer corrects the ignition timing in incrementsCAUTION: If the ignition timing is adjusted too advanced, this will cause serious damage to the engineThe timing mark on the PTO flywheel refers to the physical component position when the spark must occursThe MPEM must be synchronized with the markFor instance, on particular engine, the timing correction may need to be advanced to so that the mark aligns with timing mark pointer toolThis is not the real spark advance, just correction for the tolerances of the mechanical componentsKnowing that, you select with the programmer the higher or lower number to advance or retard the actual timing correction by referring to the following chartTIMING CORRECTION CHART PROGRAMMER NUMBER (MPEM) IGNITION TIMING CORRECTION 4