Here's our question(s). We have a Craftsman power propelled lawn mower. Bought in 1995. Only been run for maybe 3 hours tops. So everything still even looks new. Took it out, cleaned it up, drained it, tightened it, etc. But it won't start. Ordered a solid state ignition and put it in. Dave thinks the problem may be a clearance problem but there are no specifications in the owner's manual. This mower was from back when everything Sears sold, had only Sears' name on it. So we don't know the engine manufacturer. The mower is Sears model #: 917.376340 and the engine Sears model #: 143.966500. This is 6.5 hp engine takes plug RJ19LM.
Dave is trying to find out the specification for clearance between the magnet mounted on the flywheel and the solid state ignition. When the clearance is set at 2 - 3 thousandths, the mower would not start. When the clearance is set at 17 - 18 thousandths, it starts, runs rough and fouls the plug. Of course, at this time, he isn't really sure this is the problem. So if anyone has any other ideas, please?
Hope there is someone out there who can help with this. Even if just to help us identify the engine, or if there is a standard for clearance that might work?
Thanks again for all your help. We really appreciate the time it takes to give it.