outboard wont shut off with key

[regal sebring]

Hi , Im new here hopefully Im posting this in the right area....( and I am ready for OMC sea drive bashing) I just replaced powerhead in a 1985 OMC Seadrive 1.6 litre outboard , no problems with removing old one and installing replacement , it fired right up first time ,which was a nice surprise ( i dont really have any experience with outboards)...but when i turned the key off motor wasnt shutting down , I had to pinch fuel line to get it to shut down ....any ideas????

 

[NYBo]

Re: outboard wont shut off with key

Welcome to iboats!:welcome:

Are you sure the replacement switch is compatible with an outboard and is properly connected to the magneto wires?

 

[regal sebring]

Re: outboard wont shut off with key

I never replaced switch i replaced powerhead and thats it?I switched 2 wires on ignition just to see if it would make a difference?.( thinking wiring on powerhead may be slightly different ) I put them back to where they were
Im thinking it can?t be anything too serious or it wouldn?t start and run

 

[jhebert]

Re: outboard wont shut off with key

...when turned the key off motor wasn[']t shutting down...any ideas...?

Your engine operates on a magneto generated spark. To suppress the spark you have to shunt the KILL wire to ground. This is done on the ignition switch. You can see the wiring in a detailed and illustrated article I wrote at

continuousWave: Whaler: Reference: Ignition Switch

 

[regal sebring]

Re: outboard wont shut off with key

ok thats excellent thank u very much .. but why would new power head be different

 

[NYBo]

Re: outboard wont shut off with key

You must have something hooked up incorrectly under the cowl, or one of the magneto wires has broken between the powerhead and the ignition switch.

 

[regal sebring]

Re: outboard wont shut off with key

ok cool I?ll have a look , but as far as i know , I only connected main plug ( big rubber connector) , main starter lead and 2 ground wires

 

[Silvertip]

Re: outboard wont shut off with key

Start the engine and then disconnect the big harness plug. Insert a short jumper wire between the ignition kill terminal on the engine side harness and ground. If the engine dies the problem is in the helm side if the harness. If not, the problem is with the engine harness wiring.

 

[merc150]

Re: outboard wont shut off with key

Start the engine and then disconnect the big harness plug. Insert a short jumper wire between the ignition kill terminal on the engine side harness and ground. If the engine dies the problem is in the helm side if the harness. If not, the problem is with the engine harness wiring.

Check or ground the ignition switch. I just had the same problem

 

[regal sebring]

Re: outboard wont shut off with key

ok thanks , but how do I do that