help with sync carbs

hi buddies, i want to save me some dollars and sync my carbs, i dont know too much about the topic so i need some help from you, if you have a tuto or you know where i can find one tellme please. i want to sync carbs and regulate idle mixture too thanks my biek is yamaha xj 650 maxim

 

Have you checked your valve clearances yet?

The valve clearances need to be in spec or you won't get a good sync.

Once your carbs have been cleaned and serviced and their float levels accurately set, you do a "bench" sync.

Then after putting them back on the bike, you do your vacuum sync with the motor running.

You're synchronizing the carbs to balance out the small differences between cylinders; the valves have to be in spec first or you're wasting your time.

 

Also, did you manage to get your airbox back yet, or find a replacement?