Well yes... I was looking for something a litte more usefull in checking the correctness of the settings. It came with the screw's varying from 1 turn out, to 4 an 3/4 turns out, so my dad decided to set them all to 2 turns out. Today I found that if you rev the bike, it starts flaming on this setting, so changed them to 3 turns out. It flames less and runs better but still flames, so want to try and set them up properly. --
But if it's flaming from the exhaust, then it isn't running at it's optimum, so you'd want your bike running at it's best wouldn't you? --
heh. That was the answer I was going to give, but then decided it would be too cruel.[/QUOTE] I was only trying to be kind.
Well it's clearly borked _now_, but I think your big mistake was letting your dad anywhere near it, as he's clearly just as clueless as you are. My first answer still seems your best option - get it to a mechanic now, before you do any _real_ damage.
I know that, you know that... I just thought it might be helpful to explain it to Dynamic, so he can tell his dad..
I work on the basis that the less his Dad knows, the better. Hopefully he'll learn to stop sticking his uneducated oar in.
The same as any bike - a screwdriver that you can use to twiddle them with the engine running, & an ear or 2. Screw them all in until lightly seated, then back them out 1 full turn. Get the engine warm, then back them out 1/4 turn at a time, until you get the fastest idle speed, waiting a few seconds between each adjustment to let the engine settle. You might be able to do them 1 at a time depending how well the engine runs at idle, otherwise you'll have to keep switching between them. If the idle speed drops or the engine starts to stutter when moving a particular screw, put that one back to where it was & continue with the others. Assuming they're fuel screws rather than air bypass screws, I.e. they're on the engine side of the carb, screw them back in 1/8 of a turn once you've found the fastest idle. On most bikes, the final positions should be between 1 & 3 turns out ideally. Any more either way & something else is wrong, or you need to go up or down a size on the pilot jets. As with any carb 'problems', make sure the valve clearances, plugs, air filter & inlet/exhaust are all hunky dory first. The mixture screws only affect up to 1/8 throttle, & are pretty unimportant on a multi-cylinder bike. If it ticks over smoothly, & needs choke to run when cold, they're probably close enough.
