My 500 Touring EFI is blowing the 20 amp main fuse after running awhile. It runs fine till it blows the fuse,everything works like the fan and all the lights. My best guess is, I have a wire grounding out. Anybody experience this? Any idea where to look? Thanks

 

If you are talking about the auto type blade fuse blowing,then check further back from the fuse block assy and check out the thermal fuse(should be on top of the harness),had problems with this one on several machines before I retired. If you find a 10 amp marking on it,replace with a 20 amp,plus check for corrosion on either side of the fuse. Also fuse block can be lifted up and check connections into the block. Hope this helps. OPT

 

ditto on the fuse block I have seen the wires under it pull loose and ground out , causing short