Upjet a stock 1997 Zuma

[traegan]

I am thinking about ordering a set of main jets to fool around with the carb on my stock 1997 zuma. (everything in pretty decent shape, 800 miles + storage for the last ~27 years).

I was looking to upjet, my plug looks to be running a bit lean. But the CW50 service guide says the main jet is already pretty big @ #93.



Should I really consider going bigger than #93?

For reference, I ride for fun in the CA foothills with some pretty decent curves and grades. So, trying to eek out as much performance as I can out it while keeping it 50cc.

[aeroxbud]

I think my 02 BWS ran a 93 as stock also. Never had a problem with it till I upgraded the cylinder, and went with a bigger carb.
If you are worried about it. Perhaps invest in a temperature gauge.

[traegan]

Thanks. I am not really worried about it, but was going to order some bigger jets and it seemed out of the ordinary to be going so big on a 50cc.

edit: especially if I decide to pickup an exhaust. That is the one piece of the scoot that appears to be worse for wear.

[Zino]

stock jetting works well as is trust Yamaha engineers
once you add a pipe then you will need to change the jetting
the more extreme the pipe the bigger the jetting

when I snowmobiles we actually went as lean as possible so she would just scream until we either won or holed a piston.