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10 hp problems

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Got 7010 put back together that I bought a few weeks ago and was mowing with it tonight when it started to run real rough,almost like carb problem.But when I felt the points cover it was really hot so I pulled cover and adjusted points a 1/4 turn closed and started to run great again,So I continued to mow and it started doing it again. Should I be looking at replacing points and condensor? Thanks

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Yes locknut is tight,starting to think its carb,after 2 hrs of mowing real good today it started to act up and have to run full choke now

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If nothing else helps, try checking your valve clearance. As a valve heats up the stem will actually get longer. If you have too little clearance the valve will stop sealing properly after operating for a while. Had it happen on three different engines. Mine started acting up after about 15-20 minutes. Engine would act lean, and opening up jet would help for just a few minuted, then it would act up again. If I shut down the engine for an hour or so, it would again run for 15 minutes or so and I would also have to lean it out again when I first started it.

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