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ok, thanks.

also, does anyone know the true stock size? found three sizes and of course they all say they fit most 50cc gy6's. going to measure but as i'm sitting here waiting to go to work i thought i'd ask.

quite familiar with 150's, but i am currently working on a 50cc with carb problems. i have cleaned it several times as it sat for a year or so and apparently had water in the tank causing a mess. after said cleanings i can't get it to go beyond about 8mph and have givin up on the carb, just going to order a new one. anyway, the 150's have a decelerator valve/diaphragm on the side near the top for when letting off full thottle , when looking up 50cc versions they are calling a similar small diaphragm but with a plunger on the bottom of the carb an "accelerator pump"?

i'm guessing wordage is just a bit messed up or confused but is this or is this not the relative equivalent to whats on the 150 and work about the same way, allowing a touch of extra fuel through when the throttle is suddenly reduced to zero so it doesn't stall out?

that stator is an ungrounded version, where your old was grounded. you need to get a matching regulator/rectifier. i went through the exact thing when i replaced my engine with "kit" that had r/r, starter relay, blinker relay etc, but only changed the motor considering everything else was fine. unfortunately the r/r they sent had different connector so i had to order a 4 wire. my lights did EXACTLY what yours is and after plenty of diagnosing it eventually burned out every bulb on the ac side of things, headlights, dash lights, and tail light.

www.scrappydogscooters.com/COMMON_PARTS.html , scroll down to Floating ground regulator rectifier #02.

you can look elsewhere of course but they seem to be the only seller i found to actually list whether or not it is a floating ground version or not (they have both).

as was mentioned the bowl float valve is not sealing and that is the only reason you see gas flow from the OVERFLOW tube. replacing the gas will not fix this (although should be done) so unfortunately you will have to pull the barb and check it. i had floats with the mold seem had plastic sticking off from it (was not properly cleaned up during manufacture) and was once in a while hanging on the side of the bowl. a little knife work fixed me up but you may have a needle valve problem. also adjust your valves

as tvnacman said, check your variator. keep in mind that the variator face should be off and the clutch pulley open (it's tough but squeeze it with your hands and get the belt in as far as you can) when installing a belt. tighten the variator nut by hand and keep checking that the belt is not in the way to keep it from sitting flat. then tighten for real. i use a regular impact driver (not an impact wrench). it gets it plenty tight and never had a problem, except my first go when i did not keep the belt out of the way and it was crooked, not visibly so but it was actually only tight to the belt so it loosened as soon as i took off. ruined the variator in the process but i learned well from it.