I had been having trouble getting my Wheel Horse 525 to start. When we were in Wisconsin it lived in a nice heated building and started easy, not so here in Iowa when it sleeps in an unheated shed. Most of last year I had to put the battery tender on it and gave it a toot of either or run the propane construction heater and a fan to warm it up, then think good thoughts to get it started. I tried changing plugs but the old plugs came out with a lot of aluminium on the threads I cleaned the threads out in the heads and did manage to get the new plugs in and seated, still not real good at starting. I meant to take the heads off this summer and get inserts in them and check out the valve seat situation but with my Mom passing, a few of the vehicles we're driving throwing temper tantrums and being shorthanded at work that didn't get done. First snow fall this year and it was difficult to start and I was back to either and battery chargers. It's got a Japanese carburetor on it and I'm told the rebuild kit is over $100. Well I filled the gas cans up with 92 octane ethanol free unleaded, filled it up and dumped the last of a can of Sea Foam into the tank. She started up this morning without any starting aids and idles better than it has since it came to me. Now I have to pace myself and make sure I get one of the Cub Cadets well enough this spring to handle the lawn duties so I can give the Wheel Horse the attention it needs.