Ebikerman wrote on 10/05/09 at 07:15:18:My Clymer Manual lists 3 carbs for the LS650 and S40. How do you know which carb came on the '07 S40 and which jets are stock? 145 and 150 are at least some of the main jets shown in the Clymer Manual.
Stock '05 had a 145 main, and it's unlikely they'd go richer on a later model.
Quote:My bike runs great after halfing the white washer thickness, and gets about 57 mpg on the hiway. Most will think me crazy, but I would rather be legal if possible. I would not know which carb to purchase or what jets to replace or their size in the carb on the bike. Is there much exhaust emission difference made by raising the needle by as much as half the washer thickness? What about 145 to 150 main jet?
Dude. You would be an absolute fool to buy a new carb, or even any stock carb parts to bring yours back to factory specs, when your bike runs well, you're happy with the performance, and it gets 57mpg (!)
No bureaucrat is ever going to dig into your carb and find your
dirty little secret, ooh the white spacer is only
half as thick as it
should be.. busted!
Think of the environmental costs associated with junking the engine prematurely and building a replacement, because the mixture was off due to legal requirements. Stupid laws should be broken and it's your patriotic duty to break them, IMO.
Quote:The Suzuki Dealer in Tifton Georgia said they have not had any returns for surging or back firing on these 650s for about 4 years the parts man has been there yet many on this forum modify the carb to prevent this behavior.
Right, because everybody knows it's far easier to turn a screw than go back to the dealer just to listen to a bunch of hemming and hawing about how they can't do anything because their hands are tied legally. That's for warranty work, though. Go to a Harley dealer and plunk down the money to convert to Screamin' Eagle gear and they're all "Sir, yes sir! Competition use-only parts coming right up!"