Re: Can a Mercury switchbox be repaired?
I went to the CDI site
http://www.cdielectronics.com/Portals/0/installsheet/114-7452K 1.pdf
to find a wiring diagram to swap the channels and found this in the trouble shooting section for my switch box (its a CDI unit)...
of particular note is the warning and #5 which describes my problem.
Only problem is I don't know what the correct voltage is supposed to be at the stator and trigger.... anyone know????? Am I testing this with the motor running?
WARNING! If the old pack fired only one cylinder, remove the flywheel and check the magnets to see if they are loose.
TROUBLESHOOTING THE 114-7452K1
Visually inspect the stator for cracks or varnish leakage. If found, replace the stator.
Unit will not fire:
1. Disconnect the black/yellow kill wire AT THE PACK. Check for broken or bare wires on the unit, stator and trigger. Using the Fluke meter with the 511-9773 peak reading adapter (or CD-77), measure DVA voltage of the stator from the black/yellow wire to engine ground with everything connected. It should be approx. 180 volts or more. Black/white wire to ground should be 25 volts or more.
2. Engine will not kill: Check kill circuit in the pack by using a jumper wire connected to the black/yellow wire coming out of the pack and shorting it to ground. If this kills the engine, the kill circuit in the harness or on the boat is bad, possibly the ignition switch.
3. High speed miss: Check the DVA voltage of the stator while running the engine. It should show a smooth climb on the black/white wire. NOTICE: Use caution when doing this and do not exceed the rated voltage range of your meter. The readings should show a smooth climb in voltage. If there is a sudden or fast drop in voltage right before the miss becomes apparent, the stator is usually at fault. If there is no indication of the problem, it could be a small water leak in one or both cylinders.
4. Coils fire with spark plugs out but not in: Check for dragging starter or low battery causing slow cranking speed. DVA test stator and trigger.
5. Intermittent firing on one or more cylinders: Check for low voltage from the stator and trigger.
6. All Cylinders fire but engine will not crank and run: Index the flywheel and check timing on both cylinders. If the timing is off, replace the switch box.
