Sea-doo RX Shop Manual page 222

Section 09 ELECTRICAL SYSTEM
Subsection 02 (IGNITION SYSTEM)
2. Connect timing light pick-up to MAG side spark
plug wire.
1. Timing light pick-up
3. Rev the engine to 3500 RPM and point beam of
timing light straight in line with timing mark
pointer.
1
F06H07A
1. Timing light straight in line with tool slot
CAUTION: If engine is to be run more than a
few seconds, engine must be cooled using the
flush kit.
NOTE: If mark on PTO flywheel is perfectly align-
ed with timing mark pointer, no adjustment is re-
quired.
Ignition Timing Adjustment
To correct the ignition timing, the data of the
MPEM is changed using the MPEM programmer
(P/N 529 035 585) or the VCK (Vehicle Communi-
cation Kit) (P/N 529 035 676).
09-02-6
MPEM Programmer
NOTE: For more information on the programmer,
refer to the MPEM programmer guide (P/N 219
700 090).
Through the MPEM programmer, the ignition tim-
ing can be advanced up to 3° or retarded up to 4°.
The MPEM programmer corrects the ignition tim-
ing in 1° increments.
CAUTION: If the ignition timing is adjusted too
advanced, this will cause serious damage to
the engine.
The timing mark on the PTO flywheel refers to the
physical component position when the spark must
occurs. The MPEM must be synchronized with
the mark. For instance, on a particular engine, the
timing correction may need to be advanced to 2°
so that the mark aligns with timing mark pointer
tool. This is not the real spark advance, just a cor-
rection for the tolerances of the mechanical com-
ponents.
Knowing that, you select with the programmer the
higher or lower number to advance or retard the
actual timing correction by referring to the follow-
ing chart
TIMING CORRECTION CHART
PROGRAMMER
NUMBER
(MPEM)
2
3
4
1
5
6
7
8
Examples:
a. You found the flywheel mark advanced. You
must retard the ignition timing.
– The programmer gives you the number 3. Re-
ferring to the chart, number 3 returns a cor-
rection of 2° (advanced) and this is too much
in this case.
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IGNITION TIMING
CORRECTION
3°
2°
1°
0
- 1°
- 2°
- 3°
- 4°
SMR2000-060_09_02A.FM