valve adjustment
Point is you don't need to know that to set the lash. Throw it away..
The easiest way to make sure you are checking lash at the right time is to use the "EOIC" method.
http://www.circletrack.com/enginetech/ctrp_1012_setting_valve_lash/photo_2.html http://www.circletrack.com/enginetech/ctrp_1012_setting_valve_lash/photo_2.html
You can set your lash with an Allen wrench and a standard crescent wrench, but a dedicated
EOIC stands for Exhaust Opening, Intake Closing when working with the intake and exhaust valves in a single combustion chamber. To use this method, pull the valve cover so that you can see the rockers and valve stems and turn the engine over by hand. (You can also use a bump starter if you choose.) Work with only one pair of valves from a single combustion chamber at a time. When you see the exhaust valve beginning to open-you will see the rocker begin to push the valve stem down-you will know that the corresponding intake valve is fully closed with the lifter on the base circle of the cam lobe. Likewise, when you see the intake valve fully open and then start to close (Intake Closing), you will know the corresponding exhaust valve is ready to be checked. Repeat the process with each pair of valves on the engine