CDI 174-6617A17 Installation And Troubleshooting Manual

This unit replaces the following P/N's: 86617A14 & A17.
Warning! This product is designed for installation by a professional marine mechanic. CDI Electronics cannot be held liable for
injury or damage resulting from improper installation, abuse, neglect, or misuse of this product.
How to test the Engine Stop Circuit (Kill) for DC Voltage:
1. DC voltage present on the kill circuit of the Switchbox due to a faulty key switch, boat harness, or engine harness will severely damage
the Switchbox's internal kill circuit. Connect a Digital Multi Meter to the Ignition Stop wire(s) AT THE SWITCHBOX(S) while
disconnected from the Switchbox 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 Switchbox at any point until the problem is corrected OR DAMAGE TO THE
SWITCHBOX WILL OCCUR!
1. Disconnect the Negative battery cable (if equipped).
2. Remove the flywheel according to the service manual for your engine.
3. Disconnect the old Stator from the Switchbox.
4. Remove the old Stator and save the original bolts.
5. Using the original bolts, install the new Stator per OEM specifications with thread locker applied to the Stator bolts.
6. Connect the new Stator to the Switchbox.
7. Reinstall flywheel according to the service manual for your engine.
8. Reconnect the Negative battery cable (if equipped).
NO SPARK ON EITHER CYLINDER:
1. Disconnect the Black/Yellow stop wire AT THE SWITCHBOX and retest. If the engine now has spark, the stop circuit has a fault. Check
the key switch and harness (if equipped).
2. Check the cranking RPM. A cranking speed of less than 250 RPM 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.
3. Inspect and clean all engine and ignition ground connections. Make sure the Switchbox and Ignition coils are grounded.
4. Verify the flywheel only has Two outer magnets and not Four magnets. The newer ignition system has a four magnet flywheel and this
Stator will not work for that application.
5. Check the Stator and Trigger as follows:
Read from
Blue (Low speed Stator)
Red (High speed Stator)
Brown/Yellow (#1 Trigger)
Brown/Yellow (#1 Trigger)
Brown/White (#2 Trigger)
6. Check the DVA on the Black/Yellow kill wire coming out of the Switchbox. You should have a reading of at least 150 DVA or more. The
Stator and Trigger should be connected to the Switchbox for this test. If you do not, check the DVA on the Stator and the Trigger. If the
DVA on the Stator and Trigger but the DVA on the Black/Yellow Kill wire coming out of the Switchbox is low, the Switchbox is likely
faulty.
7. Check the DVA on the Green wires from the Switchbox while connected to the Ignition coils. Check the reading on the Switchbox
terminal AND on the Ignition coil terminal. You should have a reading of at least 150 DVA minimum at both terminals. If the reading is
low on one cylinder, disconnect the Green wire from the Ignition coil for that cylinder and reconnect it to a Pack Load Resistor. Retest. If
the reading is now good, the Ignition coil is likely bad. A continued low reading symptom indicates a bad Switchbox.
8. Check the flywheel magnets for cracked, broken, or loose magnets.
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Rev C • 6/19/2023
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 P/N: 174-6617A17
TROUBLESHOOTING
Read to
Black (Stator ground)
Black (Stator ground)
Brown/White (#2 Trigger)
Engine Ground
Engine Ground
CDI Electronics, LLC • 353 James Record Road SW • Huntsville, AL 35824 USA
www.cdielectronics.com
INSTALLATION
OEM Ohms CDI Ohms
2900-3500 Ω 1900-2400 Ω
100-180 Ω 200-250 Ω
650-850 Ω
Open Open
Open Open
• Tech Support: 1-866-423-4832 • Order Parts: 1-800-467-3371
Page - 1 of 3
DVA Connected
180 V Minimum
25 V Minimum
- 4 V Minimum
1 V Minimum
1 V Minimum
Disconnected
180 V Minimum
25 V Minimum
4 V Minimum
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QF-358