My $56 ebay motor runs awesome except at idle or when low speed jets are main circuit. Rebuilt carbs. Set low timing at 3 deg and max at 19 as per manual. 3 deg low also has cam at mark, as per supplement for manual. mix set in gear @idle warmed up. Seems as though it loads up at idle yet it needs a shot of choke and some throttle to start. mostly seems a problem at a busy boat launch when starting it to load on trailer, other than that it wouldn't bother me at all. No tach on it yet (coming) and hate a high idle rounding off dogs on gears. I have noticed that the bores for the throttle shafts seem sloppy but not sure what norm is for these carbs. How much slop is there in the throttle shafts through the bore on these carbs? My 40 and 18 'rudes are tighter(but also different carbs). Anyone ever try boring these out and putting bushings in?
