For a green hand setting valve lash (rocker arm to valve stem clearance) find the TDC line on your timing on the compression stroke. (both rocker arms on number one cylinder all the way up)which means both push rods are all the way down. Take a 5/8" box end wrench and loosen a lock nut. Leaving the wrench on the lock nut take a screw driver and adjust the clearance to a snug sliding fit on a .012 feeler gage and holding the screw driver so it will not turn, tighten the lock nut. Move to the second rocker arm and do the same. Next do the number two cylinder by turning the engine just enough to have both rocker arms all the way up as it was on number one. Then following the firing order do the same on number four cylinder. then move to number three. Doing it this way you follow the firing order of 1-2-4-3. This also helps under what is happening to make an engine run. By understanding how the valves work you can then take any engine and find the firing order by removing the valve cover or covers and turning the engine by hand and mark each cylinder as both rockers are both up after finding the compression stroke on number one.
I am a big believer in the many details of the running engine learned when working on them rather than just assembling them and hopping for the best. In my opinion it makes it more fun.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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