1/4 to 1/3 is mostly jet
1/3 to 2/3 is about even, jet + needle
2/3 - 3/4 is mostly needle
Thanks Ace. So, if im getting this, switching to one jet leaner would require the needle to move a bit richer for good 1/3 to 2/3 performance. Outside temps may also impact this as well (summer v winter for example). Am I correct, generally?
Have you gotten better at dealing with needle changes with the TM-32? Do you have any hints for me when I get to that point? Do you do it on the engine with the tank removed? I'm thinking it's easier to remove the carb to make needle changes. No?
Hey 2CV. I like your new title 'North America's Fastest AVL'!
So far, I just pull the tank to get to the carb on the engine. For change needle settings, I just rotate the carb slightly to the timing chest side of the bike, and pull the cable / slide assembly off the top. The i compress the spring and release the cable; the slide just comes off and the spring releases itself! It's easy to get off; To get it back on, you need to compress the spring with all the fixings in place on the cable plate, and re-attach to the slide. Once the cable is on the slide, it's easy. It's just the spring that is a b*tch (I gave up on the zip ties - more trouble that its worth!). I do the same to change the needle jet, except I pull the bowl and main jet, and then lift it out the top; no need to mess with the spring...
I've gotten quick at it. Yesterday I changed twice; gotten down to about 20 minutes, with minimal swearing. But there is a learning curve!