Can anyone help. Have an older model Craftsman self propelled mower, model # 917.378130 and Sears does not sell front wheels anymore. Anybody know what wheels would work? Part # is 86954. Tried to cross reference and get AYP-702236 but afraid to order unless I know they will work for sure.

KOHLER SKH426U1G2RB Model# CV15S Sped # 41567 DISPL (CC): 426 Used the tractor about 1 week ago to mow lawn, its a craftsman sit down. I attached a picture of its specs. Tried to start today, with no luck. It cranks strongly so it should not be battery, or starter I think. I tried to spray starter fluid down the carb, that did nothing. I took out the spark plug, tried to dry it, put it back in, wouldnt start. I then took the spark plug out, and while connected to the wire I tried to crank it to see if it would spark, I saw no spark. It seems too easy for it to be a bad spark plug, but it might? I found two other spark plugs in my garage but they were not for this tractor, not sure what they were from but they were used. I tried to test with them hanging off the side to see if they would spark, and they wouldnt. I'm assuming its a spark condition but not sure what I should do I next. I suppose just buying a new spark plug would be step one. Any other suggestions or possibilities?