Working on old MTD rototiller, (no model number can be found), but the briggs motor with it, does, (altho I can't find it at the briggs site, model 100902-0197-01). Anyway reason for my post, I found a wire just hanging, coming from under the flywheel, and wanted to see if anyone had an idea of what it was, before I spend time pulling the flywheel off. I enclosed a pic below. Thanks, Steve

I ran my Honda HRR216 self-propelled mower without oil until it seized (don't even ask...). I got it unseized and started, and it seized again. Unseized it again (more easily the second time) and now have it running. I've run it until hot and then changed the oil twice now. The oil is thin and black after 15 minutes of running. Also, when hot and under stress (higher grass, for example, or self-propelling), it rattles pretty loudly. Thought I'd start with the flywheel. Took the cover off and spun the wheel by hand, which seems to have a hitch. With the flywheel seated, I can wobble it slightly side to side. It spins freely, but I hear a clank under the deck when I spin it. Haven't taken the flywheel off, as I don't have a puller, but I will get one if it may offer a solution. Could the key be bad and the mower still run (and also produce rattling sound)? Could it be something else related to the flywheel and still have the above symptoms? Things I'm also considering are: cracked head gasket; loose pin at the piston; loose bolt at the connecting rod; cracked connecting rod. Thoughts on those? I'm willing to open it up and investigate, but anything else I should check before doing so? Thanks.