This is the procedure i use for my chainsaws ,
Turn the low and high speed adjustment screws out 1 1/2 turns adjust the
idle screw , then slowly turn the low speed adjustment in until the engine
starts speeding up then open it back out a little until it slows back down a
little, now adjust the idle for preferred idle speed ( chain should not be
turning)
Run saw up to wide open and turn in the high speed adjustment until the saw
runs at full speed then turn it back out a little so the engine sputters a
little DO NOT run it wide open for more than a few seconds.
To verify the low speed you should be able to pull the throttle in all the
way and it should not die, if it tries to die open the low speed slightly
and re-adjust idle if necessary.
