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MOUNTING

The Launch Master can be mounted in any position but keep in mind to mount it so the rotary dials 

are accessible for adjustments. A section of Velcro is supplied for mounting. Double sided tape or 

tie wraps are also recommended depending on the final mounting area. Before mounting the unit, 
confirm that the wiring harnesses reach their connections.

Parts Included: 

1 - Launch Master, PN 4351

MSD Powersports Launch Master

4-Cylinder, Two Coil, Wasted Spark

PN 4351

1 - Harness

Note:

 The Launch Master is a launch rpm limiter that will not provide nor modify any over-rev protection. 

The stock high rpm rev-limiter will still be active. 

 

The MSD Powersports Launch Master is a universal launch rpm limiter. The Launch Master will 

provide consistent launches and quicker 60-foot times. RPM adjustments are made via two rotary 

switches located on the harness side of the unit. The adjustment range is from 1,800 to 9,900 rpm, 

in 100 and 1000 rpm increments. An LED will illuminate when the launch rev limit is active. 

Note:

 It is recommended to have the service manual for your motorcycle.

4-WIRE CONNECTOR

TAN (2)

Signal Connections (Negative side of coils).

12-Volt Connection through this single Red wire (Positive side of coils).

RED

BLACK

Connects to a good engine ground or the negative battery terminal.

BLUE

Activation Wire. When grounded, the launch feature will be active. The harness 

is supplied from MSD for a ground activation.

2-WIRE CONNECTOR

WHITE/BLUE

Activation Wire. When switched to 12 volts, the launch feature will be active. (The 
position of the blue wire on the connecting 3-pin harness must be moved.)

Note:

 Never connect both the Blue and White/Blue wires at the same time. 

Note:

 The stock clutch lever or aftermarket clutch lever with momentary switch 

       can be used to activate the Launch Master. 

WIRING

LED

The built-in LED will illuminate when the Launch Master is activated.

1 - Velcro strip

1 - Parts bag 

MSD POWERSPORTS

  • 

WWW.MSDPOWERSPORTS.COM

  •  (915)  858-3365  •  FAX  (915)  858-3496

Содержание Launch Master

Страница 1: ...t range is from 1 800 to 9 900 rpm in 100 and 1000 rpm increments An LED will illuminate when the launch rev limit is active Note It is recommended to have the service manual for your motorcycle 4 WIRE CONNECTOR TAN 2 Signal Connections Negative side of coils 12 Volt Connection through this single Red wire Positive side of coils RED BLACK Connects to a good engine ground or the negative battery te...

Страница 2: ...correct Ground the Blue launch wire If the LED turns on with the Blue wire grounded the correct connections were made If the LED does not turn on check the connection to the stock coils Note Refer to your service manual for coil accessibility LAUNCH MASTER PN 4351 COIL COIL TAN TAN RED BLACK GROUND FOR 12V ACTIVATED LAUNCH MOVE THE BLUE WIRE TO ALIGN WITH THE WHITE BLUE WIRE ON THE CONTROLLER FIGU...

Страница 3: ...e limit at a lower rpm such as 3 000 and test the system If the engine has trouble starting or running check the following Ground connection Coil connections Note Due to safety controls on some applications the launch rpm limit may be activated when the bike is in neutral or when the kickstand is down Lift and remove the purple lock with a small screwdriver Lift the tab and pull on pin to remove I...

Страница 4: ...alled on the vehicle The repaired unit will be returned as soon as possible using Ground shipping methods ground shipping is covered by warranty For more information call MSD at 915 855 7123 MSD technicians are available from 7 00 a m to 5 00 p m Monday Friday mountain time TECH NOTES __________________________________________________________________________________________________________________...

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