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Installation and Troubleshooting Guide 

 

 

 

   

This installation is to be completed by an Authorized Dealer or Professional Service 

  Technician. For questions regarding installation or warranty, call CDI Tech Support  

  at 866-423-4832. Do not return to the Dealer or Distributor where the part was purchased. 

  Contact CDI Electronics Directly for Return Material Authorization. 

CDI Electronics, LLC  

 353 James Record Road SW 

 Huntsville, AL 35824 USA 

Web Support: www.

cdielectronics.com

  

 Tech Support: 1-866-423-4832 

 Order Parts: 1-800-467-3371 

All rights reserved. Reproduction or use of content, in any manner, without express written permission by CDI Electronics, LLC., is prohibited. 

 

Rev E 

 4/30/2021                                                                     Page - 1 of 4                                                                                 QF-358 

 

 

 

 

 

 

 

CDI P/N: 174-5456 

 

This stator replaces the following P/N's: 398-5454A2, A6, A7, A8, A9, A17, A18, and A55. 

 

Warning! This product is designed for installation by a professional marine mechanic. CDI cannot be held liable for injury or 

damage resulting from improper installation, abuse, neglect, or misuse of this product. 

 

It is recommended that dielectric grease (i.e. CDI  991-9705) be used in the bullet nose connectors to help prevent corrosion.

 

 

Any sign of leakage out of the high voltage coils or bubbling around the battery charge windings indicate a bad Stator. Check for burn marks 

on each pole. If a problem is found on the battery windings, we recommend the Rectifier be closely checked. To replace Stators with ring 

terminals, use the bullet to ring adapters enclosed with this Stator.  

 

INSTALLATION 

 

1.  Disconnect the negative battery cable. 

2.  Disconnect the Stator wires from the Switchbox, engine ground, and the Regulator/Rectifier. 

3.  Remove the flywheel. 

4.  Mark the position of the mounting screws in relation to where the Stator wires come out of the old Stator. 

5.  Remove the old Stator. 

6.  Orient and install the new Stator in the same position as the old Stator on the engine and install the flywheel, following the service 

manual instructions. 

7.  Connect the Yellow Stator leads to the Regulator/Rectifier. 

8.  Connect the Stator Black wire to engine ground. 

9.  Connect the Red and Blue wire to one Switchbox and connect the Red/White and Blue/White wires to the other Switchbox.  

10.  Replace the flywheel according to the service manual. 

11.  Connect the negative battery cable.  

 

TROUBLESHOOTING 

 

How to test the Engine Stop Circuit (Kill) for DC Voltage:  

 

1.  DC voltage present on the kill circuit of the Switchboxes due to a faulty key switch, boat harness, or engine harness will severely 

damage the Switchboxes internal kill circuit

Connect a Digital Multi Meter to the Ignition Stop wire(s) AT THE SWITCHBOXES while 

disconnected from the Switchboxes in reference to a known good engine ground. Turn the Ignition switch on and off several times. If, at 

any time, you see over 2 VDC on the kill wire(s), there is a problem with one or both harnesses and/or the Ignition switch. The Ignition 

Stop wire should not be connected back to the new Switchboxes at any point until the problem is corrected 

OR DAMAGE TO THE 

SWITCHBOXES WILL OCCUR

!  

 

NO FIRE ON ANY CYLINDER: 

 

1.  Disconnect the Black/Yellow (or Orange) stop wires AT THE SWITCHBOXES and retest. If the engine’s Ignition now has spark, the 

stop circuit has a fault. Check the key switch, harness, and shift switch (if present). 

2.  Disconnect the Yellow wires from the Stator to the Regulator/Rectifier and retest. If the engine has spark, replace the 

Regulator/Rectifier. 

3.  Check the cranking RPM. A low cranking speed may not allow the system to spark properly. This can be caused by a weak battery, 

dragging starter, bad battery cables, or a mechanical problem inside the engine. 

4.  Inspect and clean all engine and Ignition ground connections. 

 

NO SPARK OR INTERMITTENT SPARK ON ONE OR MORE CYLINDERS: 

 

1.  If two cylinders on separate Switchboxes are not firing, check the Trigger as described in step 3 below. The Trigger has three pickup 

coils to Trigger six cylinders. #1 and #4, #2 and #5, #3 and #6 each share a Trigger coil. 

2.  Connect a spark gap tester and verify which cylinders are misfiring. If the cylinders are only misfiring above an idle, connect an 

inductive Tachometer to all cylinders and try to isolate the problem cylinders. 

 

 

 

 

 

 

 

 

Summary of Contents for 174-5456

Page 1: ...to the Regulator Rectifier 8 Connect the Stator Black wire to engine ground 9 Connect the Red and Blue wire to one Switchbox and connect the Red White and Blue White wires to the other Switchbox 10 Replace the flywheel according to the service manual 11 Connect the negative battery cable TROUBLESHOOTING How to test the Engine Stop Circuit Kill for DC Voltage 1 DC voltage present on the kill circui...

Page 2: ...ow reading symptom indicates a bad Switchbox NO SPARK ON ONE BANK ODD OR EVEN CYLINDERS ON INLINE 6 CYLINDER 1 Check the resistance and DVA of the Stator as follows Read from Read to OEM Ohms CDI Ohms DVA Connected Blue Low speed Coil Engine Gnd 5 7K Ω 2 2 4K Ω 180 V Minimum Blue White Low speed Coil Engine Gnd 5 7K Ω 2 2 4K Ω 180 V Minimum Red High speed Coil Engine Gnd 90 200 Ω 27 55 Ω 20 V Mini...

Page 3: ... this same problem Check the Trigger DVA see NO SPARK OR INTERMITTENT SPARK ON ONE OR MORE CYLINDERS 4 Perform a high speed shutdown and read the spark plugs Check for water A crack in the block can cause a miss at high speed when the water pressure gets high but a normal shutdown will mask the problem because the water will evaporate off the spark plug before you can identify it 5 Check the Trigg...

Page 4: ...tifier and retest DVA will normally be 17 50 DVA at idle If the voltage is low the Stator is possibly faulty Perform a visual of the Stator for browning and varnish dripping These are signs that the Stator has overheated If the visual inspection shows any of these signs replace the Stator TACHOMETER TESTS 1 Measure the DVA across the Stator s Yellow battery charge wires while connected to the Regu...

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