Yamaha 2T/4T carb throttle mod/restriction?

[gallitzin]

Youtube MicBergsma aka Mitch's Scooter Stuff documents a throttle modification for a 2T Yamaha Zuma.  The carburetor slide is limited to 2/3rds of its output potential by limiting how far the throttle cable can pull it open.

* Yamaha Zuma 50cc Throttle Mod - www.youtube.com/watch?v=7b8wzsmSiBg?t=9  (visible at 10 seconds into the 4min video)

I was wondering if anyone noticed this on other models.   I can't find much information about the carb itself online for Yamaha models, but I wonder if increasing the output from the carb puts the 50cc engine beyond its spec'd capability, even if the air/fuel ratio is correct.

Has anyone else seen or done this throttle control on the carburetor modification?  I suppose this was only for 2T models that tried to reduce their overall power output.  4T models don't really have this problem since they don't have enough power with the same 50cc to even limit.

[aeroxbud]

They keep thinking of new ways to restrict our toys.
I'm sure the engine would be fine. It's designed to use all of the carbs fuel, then restricted.
I suppose in a way it's kinder to the engine than restricting it at the variator. Letting it run at max revs everywhere

[jorgevega24]

Hows it going guys i have a 09 zuma i currently just did the throttle mod. From 2/3 throttle to full.stock carb I have a motorforti 72cc kit and an unknown pipe it is aftermarket it has a blue muffler thats all i can say. But i currently have a 95 jet in and its still bogging on top end i was wondering if you guys had suggestions or advice?