Re: KLR You Experienced? Err, kinda not really.
Pulling the plug after a ride will give you a little info but not much, it will indicate overall rich/lean but not where in the carb/throttle settings is it off. Start with a clean plug, fire the bike up and let it idle until warm and pull the plug and look at it, if not right, adjust the pilot settings, if good, put it back in and then go do plug chops. Mark the bar in 1/4's for throttle position so 1/4 turn, 1/2 turn, 3/4 turn full. Get on a quiet street you can hold a throttle position for a steady min or 2. Bring your plug wrench and a couple of plugs. Ride at 1/4 throttle first steady for a KM or 2, pull clutch, hit the kill and pull over, pull out the plug and look, if all golden brown and good, pilot circuit is good. Next do the same at 1/2 throttle, if good, do 3/4, if good do WOT. My guess is you'll foul or lean out before WOT, there is a great chart I'll see if I can find that correlates throttle position and plug condition to know what to change, i.e. screw mixtures, jet sizes, needle position etc.