MSD 6560 6M-2L Marine Certified Ignition with Rev Limit Installation - Manual

Parts Included:
1 - MSD Ignition 3 - Wire Splicers
1 - Harness, PN 64601 2 - Spade Connectors
4 - #8 x 3/4" Screws
WARNING: During installation, disconnect the battery cables. When disconnecting the battery
always remove the Negative cable first and install it last.
Note: Solid Core spark plug wires cannot be used with an MSD Ignition.
Note: An MSD 6M-2 cannot be used with distributorless ignition systems (DIS).
THEORY OF 6 SERIES IGNITION
CAPACITIVE DISCHARGE
The MSD 6M-2 Series Ignitions feature a capacitive discharge ignition design. The majority of stock ignition
systems are inductive ignitions. In an inductive ignition, the coil must store energy and step up the voltage
to maximum strength in between each firing. At higher rpm, since there is less time to charge the coil to
full capacity, the voltage falls short of reaching maximum energy which results in a loss of power or top
end miss.
The MSD Ignition features a capacitor to store the energy as it is quickly charged to 460-480 volts. It then
releases all of this energy when the ignition is triggered. With the CD design, the voltage sent to the coil
is always at full power even at high rpm.
MULTIPLE SPARKS
The 6M-2 produces full power multiple sparks for each firing of a plug. The number of multiple sparks that
occur decreases as rpm increases, however the spark series always lasts for 20° of crankshaft rotation.
Above 3,000 rpm there is simply not enough "time" to fire the spark plug more than once, so there is only
one powerful spark.
6M-2, PN 6460
The 6M-2 is equipped with a special 4-wire connector that will plug into an optional Rev Limiter, PN 8768. The
Soft Touch circuitry provides a smooth and accurate rev limit by dropping the spark to individual cylinders.
The Rev Limit is adjustable with special rpm modules in incremements of 200 rpm (see page 12).
6M-2L, PN 6560
The 6M2-L has a built-in rev limiter. The rpm limit is adjusted with marine rpm modules (see page 12).
6M-2L Only
3 - RPM Modules, 4,000, 6,000 and 8,000
M S D
• W W W . M S D P E R F O R M A N C E . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4
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MSD Marine Ignitions
6M-2, PN 6460 and 6M-2L, PN 6560