hat nozzels

what are the holes for in the hat side of nozzles. what if you blocked some off to get idle ?

 

Those would be airated Nozzles, if you block off the holes you will have a siphoning
effect when you go to shut the motor down, or it will run on till theres no fuel left in the
block and lines from the barrall Valve, the motor will run for more than you would like untill the lines go dry or has more air than fuel to continue running.
If you have more nozzles than you need in your hat, you can put in the npt fitting and use different sized nylon plugs to get more or less air for rpm adjust, the less air the lower rpm,..the more air the higher rpm, rich or lean, you can use this method also for blower temp too.


2 cents worth