84 Johnson 70HP Orfices

ckahleer

Recruit
Joined
Mar 21, 2016
Messages
5
The carb on this motor have 3 removable orifices. From the Clymer manual, It looks like the bottom front orifice is the main fuel jet and the front top orifice is the idle air bleed. But what is the orifice in the angled facing block near the choke line nipple for? Is it regulating fuel or air?
Craig
 
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