Well, my gasket catalogs aren't up to date, but: 1930 McCord says tighten all gradually (mfrs chart if available etc)(they actually recommend three circuits to tight!) then "go over...tightening them again after the motor has been run long enough to heat thoroughly." 1939 Victor says: CAST IRON heads: "final tightening ...after motor has been run a few hours and has been thoroughly warmed up. It will be found that nuts can be drawn down further." ALUM heads: "...let the motor run hot (I assume they meant operating temp)and then let it cool. After it has cooled tighten the bolts to the final tension." Cleaning threads is always recommended; some torque lists have different values for oiled and dry threads.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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