Thanks for that.Typically the smaller stuff gets plugged up first. Carb cleaner will swell rubber, so remove the slide before spraying. Remove pilot and main jets, and the pilot fuel screw. Make sure you get the washer and o-ring out of the fuel screw cavity. Focus your attention on the fuel screw circuit and transition ports (the small holes at the base of the throat, just in front of the slide).
Right, picked that up from your thread - to check the ignition coil.Yeah a good carb cleaning and a new spark plug to get started. You'll know those are a fresh starting point. Grab a multimeter and check resistance on the ignition coil. It's an easy check, just find out the specs from a manual. Those three things done will narrow down possible reasons for the bike acting up. And they'll be on your maintenance schedule now. If there's still trouble you can dig in.
Need to get a spark plug wrench! I left a nice T-handle one back on the DR650 in India.
Question for when I put it back together - what's the correct way to set the baseline for the idle speed screw (throttle stop in my case)? Is there a recommended number of turns out from fully wound in? And then run and set it by RPM feel/sound? (no tach)
I guess I should start another thread for this carb rebuild