yamaha 50hp 3 cylinder outboard kill switch not killing

curlyoggy

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Nov 21, 2014
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Hi, i have a yamaha 50hp 3 cylinder outboard which doesn't stop when the kill cord is removed and there is no other way to stop it other than fuel deprivation. The kill button wires seem to be in place, the white wire is connected to the sealed electronic unit and the black wire is attached to a bolt, and both wires seem to be intact in the protection sleeve. The spring seems strong enough in the kill switch and the engine starts without the kill cord in place. I've also unscrewed the switch and removed the small spring that keeps the metal plate from the contacts, then made the contact whilst the engine was running to no effect. I guess the switch could be broken in some way i can't see, and i could cut the wires and then touch them together to see if the switch is the issue, however i am a little reluctant and hoped someone may have some other ideas
Thanks for your time
 
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