I've just finished installing my rebuilt 583 . How much oil should I pour into the(upper)line that goes into the crankcase housing ? ( I was told I should fill this hose ). When I started it up it idled for a couple seconds then jumped to very high revs , I had to shut it down quickly ... why would it do this ? I'm running my first tank of fuel at a 100:1 ratio .. what are other precautions I should take ? ie : cooling system and what not ?