I have an old (probably early 70's) Miller welder with an Onan Model CCKA-MS/2748J engine. It quit running last summer and I just didn't get a chance to work on it until now. It does not have spark at the plugs. I verified that by pulling a plug, grounding it on the head, and cranking. It has power on the primary side of the coil, so I was wanting to check the points next. I assumed they were located under the flywheel. I have the flywheel off but it looks like the whole front of the case, including the seal would come off, and I can't see any wire there, either. The positive side of the primary from the coil goes behind the manifold to a little box. I'm not sure if it's a magneto, or what I'm up against here. Anyone have any experience with this particular engine? I've looked for a manual, but can't find anything left in print.

Thanks!