Re: Question about mixture screws and factory pro settings
we always fit new needle jets when we do a jet kit, especially with the factory pro ti needles.
i did a 750 this week using the d08 kit. be aware the '97 models (single disc, old style motor) use different jetting to the '98 onwards 750 (from memory anyway). i used bigian's settings - needle on the first notch, 132.5 main. i dropped the pilot to 40 from 42.5 (std) which may be a little lean. new needle jets were the 13240041A part, which is a Y2, same as the 900 as well. 41B is a Y6, pre '98 750 engines. 41E is a Y0 (smallest), cagiva elephant 900.
i think 40 main is a bit small.
the mixture screws were 4 turns out. this gave an idle CO of around 5%, just nice. the idle was a bit high when i first checked it, and it needed the screws 4 1/2 turns out for 5% CO then. once i lowered it i wound the screws in 1/2 a turn.
to check the float levels i have the bike vertical on a rear stand. attach a clear plastic tube to the float bowl drain and loop it up the side of the carb. open the drain and let the fuel level stabilise - you may need to bleed the air out of the tube. ther are two little round bosses on the sides of the carbs - the rh one has a small hollow in it, the lh another little boss. that's the fuel level for the correct float level. it's the easiest way to check it, best done before and after youpull it apart just to be sure. i've never really seen one off.