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Author Topic:   blown fuse on a yamaha 225f
lucas posted 06-15-2006 12:52 AM ET (US)   Profile for lucas   Send Email to lucas  
My starboard engine, trim, and gauges were lifeless this am. I pulled the cowling and found a blown 20amp fuse designated as "main fuse/trim". I replaced it with another 20amp and turned the key to find everything turn on, I turned off the key switch, waited 2 minutes, turned it back on and nothing happened. I checked the replacement fuse and found it was blown. Any ideas of what to try next?
rtk posted 06-15-2006 06:53 AM ET (US)     Profile for rtk  Send Email to rtk     
The same thing happened to me this spring on my Mercury engine. Had nothing to do with turning the key though.

I have a dual binnacle control that is for a main/kicker engine. When I trimmed up the kicker the main fuse blew on the main engine.

I disconnected the power trim switch harness from the control, and plugged in another trim switch I had, no blown fuse. I can only guess that a wire pinched in the remote control, causing a short in the trim switch circuit.

Try unplugging the trim harness(s) that go from the control to the main harness (assuming power trim switch is on the control handle) to see if the fuse still blows without power to the trim system.


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