2000 Mercury 40 Hp 2stroke

Tyoung24

Recruit
Joined
Sep 20, 2017
Messages
1
I have an alarm going off when key switch is switched on and when the boat is running. I looked over the motor this afternoon. The fuse is the 20A fuse at the top of the motor beside the coals. When I unplugged the fuse the alarm goes off. Any help as to what is making this alarm go off??
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,758
Overheat, low/no oil in resevoir, shorted temp/oil sensor wire or bad alarm.
 
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