Minnboater
Cadet
- Joined
- Jul 9, 2011
- Messages
- 10
A while ago I purchased an ancient Mercury 7.5 HP that had sat for years and years without running. The outboard looked really nice under the hood, and the price was right and so I didn't mind spending a little money on parts This is one odd little engine under the flywheel; it has a stator and mechanical points. One of the cylinders had no spark so I bought a lime green coil off of ebay after the seller indicated it was a replacement part for my vintage outboard (1971). The engine started immediately after but it ran rough. The spark on the other cylinder was weak by comparison so I went looking for another lime green coil. No luck, so I picked up familiar looking orange coil from a boneyard near my house. Once this coil was on, the little outboard ran perfectly. One trip on the water was all I got however, and it hasn't started since. There's no spark on either cylinder now and I'm wondering if I messed things up with the coils. My question: did running the motor with mismatched coils fry the stator? I think there's supposed to be 400 VAC at the green wire going to the coils but there's nothing there now when I pull the starter. The insulators under the flywheel look great. I read online somewhere that you shouldn't hit the kill switch on this motor unless you are in the lake. I think I hit that switch a few times before hearing that when it was running in my driveway cooled by a garden hose and earmuffs. Any help or perspective you folks can offer would be appreciated.
Many thanks.
Many thanks.