The only way to measure the clearance on a worn rocker arm (where it meets the valve) is to use a dial indicator set to read in alignment with the valve stem. The cup shape of the worn rub point will defeat a feeler gauge every time. The only good thing is it makes them loose which is much better than tight. If it dies out when the throttle opens, the carb is probably partially plugged. The idle adjustment is also an indicator of goop in the passages. A clean carb might make it much better. Start it and get it so that it does the burbling thing, then run a little propane into the carb inlet (hose off) from a propane torch with the nozzle off (pure propane) if it then smooths out, you know it is carb related! Jim
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Today's Featured Article - Women and Tractors - Tractor Engine Repair - by Teri Burkholder. One of the great things about working on a tractor engine with your other half is that you know what he is thinking of at all times and can anticipate his every move and his next thought of what he will do. With Ben, anyway, I can tell! He'll be busy working and I’m handing him tools and he says, "give me that..." and I’ve already got it in his hand or "hand me that....."and I’ve got the portable light right where he needed it placed to see. "Run in the house and get me a...."as I open th
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