hi
I have a 1993 Yamaha T9.9 ELHR 4 stroke
this motor will will start on half a crank
idles like a kitten purring
runs WOT BEUTIFULLY
ISSUE :
shen accelerating it coughs ,sputters ,backfires though the carb
i don’t think it can get sny cleaner
replaced a wack of parts
been trying to...