The green one is vacuum, for use with a vacuum fuel tap. You must seal this one if you don't use a vacuum fuel tap. The red one is for the oil feed line. If you use mix fuel, close this as well. The big connector on the other side is the fuel intake. Don't leave any connections open, as they suck in air, messing up the mixture. Always put in the choke, and connect it to 12V DC (battery) if it's electric. Otherwise it messes up your fuel mixture. I can suggest you should buy a hand choke. They are cheap, and don't use 12V DC.
If you connected the carburator good, with an air filter, warm up the engine and drive full throttle for a little while and stop. Turn off the engine direct and check the spark plug for the right color. Black = too big main jet. White = too small main jet. Adjust main jet until the spark plug is nicely brown colored. Screw the idle screw a bit in so it runs a bit faster. Screw the air mixture in. Then screw the air mixture screw out 1.5 turns. If you give full throttle, and the engine does not go full rpm directly, turn out the air mixture screw until it reacts good. Then set the idle so it runs nice and slow with a warm engine. If you drive full throttle and the spark plug turns black or white again, change main jet until the plug turns brown again. If you have problems running 1/4 to 3/4 throttle, you can change the position of the needle with the small clip which holds the needle in the throttle slide until you have good reaction overall. Sometimes you have to change little things until it is totally perfect.
I have a 2004 Standard, and adapted it for a A55 Streetmate cilinder. I run with main jet 58 with a home made filter, and reach top speed of 65km/h with A55 Streetmate cilinder and Tecnigas Next R exhaust. The filter is made from a rubber that fits good, with a double layer of strech underwear. I use this because i don't have an original A55 air filter and a power filter does not give any improvements, and i have to use a bigger main jet.
Right side with hand choke and home made filter.
- carb3.JPG (34.97 KiB) 16840 keer bekeken
Nice colors. I really want to see that thing going fast. 
