Owners manual

ManualsBrandsMSD Ignition ManualsAutomotive4253 Enhancer Ignition Control Module Fits 90-93 SJ650 Super Jet

MSD POWERSPORTS

• WWW.MSDPOWERSPORTS.COM • (915) 858-3365 • FAX (915) 858-3496

Parts Included In This Kit:

1 - Enhancer Ignition PN 4253

2 - 6mm x 20mm Stainless Steel Flat Washers

Ignition Enhancer for 650 and 701

Yamaha Engines

PN 4253

Important: Read these instructions before attempting any installation.

The Enhancer Ignition is a direct replacement for the stock CDI unit. No modiﬁcations in mounting or

wiring are necessary. The Enhancer increases spark energy and includes an adjustable Rev Control

and an engine protecting Holeshot/Engine Overtemp RPM Limiter. The timing curve is also modiﬁed

to improve low end and mid range while maintaining top end performance.

Note: It is recommended that on the initial start up after installation of the Enhancer, that the ignition

timing be left in the factory setting.

Note: It is recommended that you have the Service Manual for your craft.

INSTALLATION

1. Disconnect the negative battery cable.

2. Remove the electrical box from its mount. Refer to the Service Manual.

3. Remove the 14 screws and open the electrical box.

4. Remove the screws holding the stock CDI unit. Disconnect the wires and remove the unit.

5. Connect the color coded wires of the Enhancer to the factory wiring harness. Refer to Figure 1 for

wiring. Make sure all connections are tight and fully seated. The PINK wire coming from the Enhancer

is for the Holeshot/Overtemp feature and is explained in following sections.

6. The Enhancer Ignition will have an additional RED Wire that splits. This will connect just before the

in-line fuse (See Fig. 1).

7. The Enhancer Ignition will have two WHITE Wires. The WHITE Wire with a Male connector will attach

to the factory WHITE/RED Wire. (You may need to use the supplied jumper if your WHITE/RED Wire

also has a Male connector.) The WHITE Wire with a Female connector will attach to the factory WHITE

Wire.

8. Position the Enhancer Ignition in the stock mount. Route the wires so they are secure. Install the

supplied retaining screws and washers. If you plan on adjusting the Rev Limiter, do not assemble the

electrical box. Refer to Adjusting the Rev Limiter in the following section. The Rev Limiter is set at the

factory at 8,000 rpm.

9. Install the top of the electrical box making sure that the rubber seal is in place and no wires are out of

position. Install the 14 screws and mount the electrical box.

10. Connect the negative battery cable.

WARNING: During installation disconnect the battery cables. When disconnecting the battery,

always remove negative cable ﬁrst and install it last.

2 - 6mm x 20mm Stainless Steel Hex Bolts

2 - Zip ties

Summary of content (4 pages)

PAGE 1
Ignition Enhancer for 650 and 701 Yamaha Engines PN 4253 Important: Read these instructions before attempting any installation. The Enhancer Ignition is a direct replacement for the stock CDI unit. No modifications in mounting or wiring are necessary. The Enhancer increases spark energy and includes an adjustable Rev Control and an engine protecting Holeshot/Engine Overtemp RPM Limiter. The timing curve is also modified to improve low end and mid range while maintaining top end performance.
PAGE 2
INSTALLATION INSTRUCTIONS Note: Before starting the engine, make sure all wires and lines are mounted away from the engine and exhaust. Note: If you are installing the Enhancer Ignition on a late model Yamaha Watercraft and find that the connector on the Enhancers White wire does not match the connector on the factory White/ Red wire, then you need to install the supplied White jumper wire. This jumper will allow the connectors on the White and White/Red wires to match (See the insert in Figure1).
PAGE 3
INSTALLATION INSTRUCTIONS 3 3. Once you have the desired rpm limit set, tighten the locknut on the potentiometer. Hold the shaft in place with a screwdriver as you tighten the nut to prevent the rpm limit from changing. Figure 2 The Adjustable RPM Potentiometer. CONNECTING THE HOLESHOT/OVERTEMP RPM LIMITER The PINK Wire of the Enhancer Ignition is for the Holeshot/Overtemp feature. There are several options in the way this feature can be used.
PAGE 4
Figure 3 Connecting the Holeshot Feature. Service In case of malfunction, this MSD component will be repaired free of charge according to the terms of the warranty. When returning MSD components for warranty service, Proof of Purchase must be supplied for verification. After the warranty period has expired, repair service is based on a minimum and maximum fee. All returns must have a Return Material Authorization (RMA) number issued to them before being returned.