How To Test Mercury Outboard Switch Box

If spark is restored then the box that WAS sparking has a bad Bias circuit and is blocking spark on the other box. If it is the switchbox you really should replace both of them for a couple reasons.

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It the problem stays on the same cylinders the switch box is likely bad.

How to test mercury outboard switch box. Grn Green WhtGrn WhiteGreen Stripe. Swap the stator leads end to end on the switch box Red with redwhite and blue with bluewhite. Switching the coils will tell you if it is a coil leaving the trigger just from the process of elimination.

Stick a meter across the wires. Quick test without the test light. Use the Look-Up Charts on pages 11 through 23 to.

332-2803 332-2803A3 Mfg Part. The colored insulation around the terminals can have some cracking and even a little missing that is common by this time for these engines. You can test the Mercury power pack in either one of two ways.

But if I have spark coming out on the coil the box should be good right. We know the stator is good or you would have no spark. Mid 70s mercury inline 6 cylinder distributor and switchbox.

I have had the same problems with a few of my mercs. Disconnect the Mercury Outboard switch and reset if the engine fires replace the Mercury Outboard switch. Find year and modelclick on the part with the problem stator switchbox rectifier etc.

List Price 6922 114-2803 Switch Box Mercury 95110 hp Inline 6 Cross Ref. Mercury 225EFI keeps blowing Switchbox. If the voltage is less than 9 12 volts during cranking there is a problem in the battery s or the Ignition switch Box.

Just click save button to. The terminals on the switchbox need to be firmly in place if they are not then dont use the switchbox. Worst case scenario you could clip one of the wires and test it.

Testing the trigger with an ohm meter doesnt always tell you if it is good or bad. The switch box is new. If its good you should read an open.

332-7778 CDI Module Switch Box for Mercury Outboard Motor 50-275 HP Replace 332-5524A1 332-7778A12 332-7778A3 332-7778A7 332-7778A1 332-7778A6 332-7778A9. IF these are CDI boxes it. Sierra 18-5881 Switch Box for Mercury Chrysler Force The Sierra 18-5881 Switch Box is for 4 cylinder in-line outboards with ADI ignition systems.

That leaves testing the trigger with a DVA. Universal ignition switch wiring diagram page 1 iboats re universal ignition switch wiring diagram you are probably looking at ignition switches for an i o outboard switches require more and different ignition coil troubleshooting tips for mercury mariner mercury mariner ignition coil diagrams coil packs and repair manuals troubleshooting tips. Here is a test for you.

47 out of 5 stars. Switchboxes are located in the Parts Guide on pages 7 through 10. This is one way to bench test a switch box and you also can do this on the outboard motor.

If the test light comes on during these tests then the switch is OK. You should now get two contacts that light up the test light. PARTS GUIDE12 meg pdf or.

Use one of the links below to access the Parts Guidepdf or Parts Catalog. Select your switch box for 2 cylinder mercury boat engine. Mercury Sport Jet 90 - Rev Limiter and Switch Box Tests.

There is a way to test the switchbox. When a spark test fails on one side of the motor disconnect the Bias wire and retest. Mercury Outboard Switch Box Failures.

1973-85 98 HP model 110 1977-81 20 HP engines. If the voltage is less than 9 12 volts during cranking there is a problem in the battery s or the Ignition switch Box. Check the voltage on the red and white Ignition wires at the CD Unit.

Disconnect the Mercury Outboard switch and reset if the engine fires replace the Mercury Outboard switch. I was told the switch box is bad but I hooked it up today and pulled the wire from the coil put a jumper wire in it and placed it near a ground and when i turn it over it has a really strong blue spark. All Sierra aftermarket parts are manufactured to meet or exceed OEM requirements.

1990 40hp 4 cylinder no spark at 2 cylinders. A red wire and a purple wire connected If you can reach the switch turn it to crank or have someone turn it and see if the last connection lights the test light. 115hp Tower of Power - no spark on 135 New switch boxes still nothing help.

Mercury produces an extensive line of outboard motors. Like all mechanical equipment Mercury motors can exhibit issues ignition problems being some of the most. Mercury Outboard Ignition Switch Wiring Diagram.

Now I have no rotor in it so i can not tell if it will start just yet. Mercury ignition switch box Mike you can test the kill switch. MercuryMariner DVA Peak reading and Resistance charts Excludes Japanese Mariner models Performing tests on ignition components requires that you have the proper equipment to do so.

In large black letters click troubleshooting and installation guidehope this helps. 332-2803A4 Not In Stock. If the problem moves to the other cylinders the stator is bad.

One method requires you to use a multimeter to test the power pack directly. 1976-80 4 HP model 40 1974-86 75 HP. This chart assumes you have the adequate testing equipment to diagnose ignition problems.

CDI Mercury Replacement Switch box 114-6222 features. You should read 14-15000 ohms on stock switch boxes and 9200-9800 ohms on racing switch boxes. If its bad meaning constantly pressed you should read zero ohms.

I have a 1973 65hp mercury. Outboard motor electronics are sometimes troublesome particularly since major systems like the power pack may control everything from instrumentation to the timing and synchronization of the motor. Designed for boaters from CDI Electronics.

Check the voltage on the red and white Ignition wires at the CD Unit. Mercury Marine is an international motor boat company based in Lake Forest Illinois providing motors for private commercial and government craft. Use your Engine Serial Number to confirm the correct switchbox.

MAKE SURE THE READING IS. So if you like to get all of these great graphics about Mercury Outboard Ignition Switch Wiring Diagram. You will need two jumper wire volt meter and a spark tester.

Disconnect the WhiteBlack jumper between the switch boxes and check the resistance from each boxes WhiteBlack terminal and engine ground. So that leaves the coil or the trigger.

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