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  1. M

    M18 valve questions

    Thanks Guys, I ordered a fuel pump and will replace the fuel lines and check out the carb. Sure hope that's the problem, since it's getting worse, and we're getting lots of snow. In the mean time, I'm tearing down and refurbishing another QA42A Snow blower that I found this weekend.
  2. M

    M18 valve questions

    The gas cap vent was one of the first things I rulled out (had that issue with a motorcycle years ago and it drove me nuts). I was concerned about the spark when I checked that, but I didn't check it when it was "hot". I wouldn't call it strong spark, and wonder if that contributes to the hard...
  3. M

    M18 valve questions

    Well, I didn't actually check that, I had the guy at the machine shop do the valves, with the specs from Kohler. He said everything was to spec. Mistake?
  4. M

    M18 valve questions

    Just to follow up on this project. The engine got new ehaust valves,seats, and guides, along with all new valve springs and rings. The cylinders were still to spec., so they were honed. I found a great machine shop to do the work and that took some stress out of it. The engine is running...
  5. M

    What do you see here?

    Charley, Any recommendations on cleaning the heads? Not sure what you mean by resurfacing them. I tend towards over doing things like cleaning and have been known to create more problems for myself. I'm confident the MMO mixture is correct to the instructions on the bottle, but it only saw...
  6. M

    What do you see here?

    Charlie, The plug in this cylinder looked pretty normal(brown color, good gap). I've been using MMO in the gas for only about 3 years. Gas doesn't get old, since it's used year round. The gunk, that's still there is hard, the stuff that scraped out was more like dry soot. Should I worry...
  7. M

    What do you see here?

    This is the head from a M18 with over 1000 hrs. My wife sees an angel. I wonder how so much of this surface is "factory new".
  8. M

    M18 valve questions

    Larry, Jeremiah, Thanks for your response. Sorry my question was so general. I have been maintaining this tractor for almost 20 years, and it was my Dad's before that. He was a Cadet dealer and I remember when they first came out. My Lawn Boy push mower didn't get replaced until '64...
  9. M

    M18 valve questions

    My 1811 was loosing power and compression was down to 60. I pulled the heads off to check it out. The cylinders look good but the valves need to be replaced. I am wondering if just replacing the valves is an option, or if the valve seats and guides are normally part of the fix. I've never...
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