Ok guys... I've been fighting bad jetting since I got this machine. Stock jetting... Yes it runs ok... but there are days want to set it on fire... It starts and idles perfectly every time (no choke needed, even when cold) without fail... so I'll agree the PJ is running slightly rich. Its the transition above idle that's killing me... at times it blubbers, coughs, chokes, but other times, it will get into the mid range (1/2 throttle) and then blubber... It will run in the mid range all day if you keep it below 1/2 throttle. You cannot get into a clean upper range. Sitting in neutral, you can open the throttle all the way, and it revs about 1/2 of where I think it should go. It doesn't completely rev out as a two stroke should, and it's worse with a load on the motor.
Changes I've made... I've leaned out the clip, 3rd to 2nd notch.. (3rd is where is was when I got the machine) runs better, but not good enough for me... If I move the clip to the top notch, the idle seems better, (could be my imagination) but then it will not rev out at all... pulled the MJ and found it's a 210. Cannot find a marking on the needle or PJ. I'm ok with the PJ for now...
I think I'm going to order jets larger than the current 210, (220 and 230). My semi educated guess as to what is happening... with the rich bottom end, its allowing the motor to get into the mid range, but the main jet is too small not allowing it to rev out... My fix is moving the clip to the top notch (leaning out the lower end), and swapping out the current 210 MJ for with a 220, or 230 to allow the carb to get more fuel and hopefully into the upper RPM range.
Last edited by eprovenzano; 08-19-2019 at 08:47 AM.