SOURCE: fuel mixture screw
Begin by screwing the mixture screw in all the way until it stopps,,,but ONLY JUST STOPS,,,,,DONT FORCE IT,,,then look at the top of the screw slot,,and call that 12 oclock,,,now turn the screw out to you three full turns going through 12oclock,,that means 12 to 12 is one turn.
then start the bike,,,finish your adjustments now by slowley turning the screw outwards until the engine starts to misfire,,,at this point turn the screw back in one half to three quarters of a turn.Now you have the mixture set roughly.
For fine tuning,, you need to use a monometer while turning the mixture screw
Best of luck...
SOURCE: piaggio nrg mc3 air carbrutor idle screw and air mixture settings
A service manual is a valuable tool with an aging bike. I suggest the dealer/mfr. or Clymer books. In the meantime, go to the library reference section...646 stacks should have what you need.
SOURCE: 02 Yamaha xvs 650 dragstar classic that misfires when it warms up
First I would change all the spark plugs, and if that didn't make a difference then it sounds like the coil(s) are warming up and breaking down........when it starts to skip take a good pair of pliers with good rubber on them and pull each spark plug wire, when you get to the one that the running doesn't change then I would replace that particular coil
SOURCE: 1999 yamaha dragstar paint
Go to a local FinishMaster store and they will use a color eye to find u a color
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