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High Altitude Carb Jetting for 1992 90hp Evinrude - jet help needed

fullers528

New member
Hi - I'm trying to figure out the parts to rejet my 1992 90hp VE90TLEN 2-stroke for altitude. Moved boat from sea-level up to 5000 ft and she is running very rich. Reduced prop from 14x13 to 14x11 so getting 5000 rpm. From the carb drawings I see the defaults are Idle Orifice #38C, Orifice #26C, High Speed Orifice #56C. My biggest concern is the idle but if i'm rebuilding then might as well change them all. I've found a #25C for the orificie (PN 333458) - but struggling to find numbers / alternatives for the high speed or idle. Can anyone suggest how much to adjust the nozzle size and possibly even part #'s to look for? Thanks, Fullers
 
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