90 hp wont shut off

[pontoondoug]

hello i hope someone can help me . i not started my mercury 90 hp oil injected 3 stroke it started fine but not pumping water . went to turn motor off wont shut off pull bat. cable still running

 

[lncoop]

Re: 90 hp wont shut off

Use the choke to kill it. Is it still running now?

 

[pontoondoug]

Re: 90 hp wont shut off

no i pull off gas line

 

[62 ROYAL SCOTT]

Re: 90 hp wont shut off

Hey it could be your ignition, just like your car you disconnect and it sill runs look at the [BRIGHT SIDE] At least the generator is good.also check your ground

 

[pontoondoug]

Re: 90 hp wont shut off

ok thanks

 

[CharlieB]

Re: 90 hp wont shut off

The battery is only there to start the motor, the 'mag' ignition is a 'ground-to-kill' .

You could remove the battery and use a pull-rope to start the motor and run fine all day.

Either the ignition switch is defective or there is a poor connection somewhere between the ignition switch and the ignition switchbox on the motor. The black wire with the thin yellow stripe is the 'kill' wire, unplug this wire at the switchbox and test the end coming from the wire harness with an Ohm meter, you need to see continuity to ground (the motor block) with the ignition switch turned OFF, and no continuity with the switch turned ON.

DO NOT TEST the wire from the switchbox, any voltage applied here can/will damage the switchbox.