Alarm on 150 2 stroke outboard

Mclintock

Recruit
Joined
Apr 21, 2022
Messages
1
I was at lake sat and all after taking off i heard this alarm buzzing sound so i brought it home and changed water jacket gaskets checked thermostats. They are working properly water impeller is working well water flowing everywhere it should be pissing like a stud horse lol where do i go from here or is there another alarm i don’t know about i pre mix my fuel no oil reservoir on motor.
 

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aspeck

Moderator
Staff member
Joined
May 29, 2003
Messages
17,457
I moved this from Forum Issues to "Other Outboard Brands" since we have no idea of the year, make, or model of you motor. More information would be needed to answer this question.
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
25,371
Is that an old Merc/Mariner?

Most overheat alarms work by grounding the signal wire to the block. These wires are usually brown or brown/white. If the insulation falls off, then can short to ground tripping the alarm.
 
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