1973 50hp evinrude fuse problem? HELP!!!

[wikelam]

I have a 50 hp evinrude that runs fine, when it will start. the problem is that the fuse will blow when key is turned and the motor starts to turn over. if turned over for more than 2 seconds the fuse will blow. if in gear will not turn over but fuse blows when key is turned. what could be the problem. when it starts the motor runs great, but when cold it takes a few fuses to get started. ANY HELP WOULD BE NICE!!!!!

 

[wikelam]

Re: 1973 50hp evinrude fuse problem? HELP!!!

Any help?

 

[jim phillips]

Re: 1973 50hp evinrude fuse problem? HELP!!!

You must have a short between the switch and the starter or maybe corrosion that is causing more draw then the fuse will handle

 

[wikelam]

Re: 1973 50hp evinrude fuse problem? HELP!!!

I will check all connections for corrosion or loose wires.

 

[wikelam]

Re: 1973 50hp evinrude fuse problem? HELP!!!

connections seem tight and noncorroded. battery terminals seem clean, cleaned them any way. still pops fuse when trying to start.

 

[wikelam]

Re: 1973 50hp evinrude fuse problem? HELP!!!

Any Help?????

 

[papasage]

Re: 1973 50hp evinrude fuse problem? HELP!!!

check the switch i change the switch could be a wire touching or in the switch itself

 

[Xcusme]

Re: 1973 50hp evinrude fuse problem? HELP!!!

Check the condition of one of the blown fuses. If the fuse appears blackened on the inside of the glass tube, that indicates a dead short to ground. The sudden inrush of current vaporizes the fuse and looks black. Look for wires touching the block or otherwise going to ground.<br /><br />If the blown fuse is just melted in half, that indicates an overload. Too much current was drawn thru the fuse element causing it to get hot and melt. Whatever that circuit is powering is drawing too much current. Since you mentioned that it takes 2 seconds or so for the fuse to blow points to an overload. A dead short will take out that fuse at the speed of light. <br /><br />Try substituting a light bulb for the fuse while testing. A bright light will indicate a large current flow (possibly your problem). If the light just glows, that's a small current flow . Either way, it sure saves on replacing fuses until you get things sorted out.