Main jet size

[matt matysek]

On the main jet how do you tell the size. On the "bucket of bolts" bike I picked up the main jet has no markings of any kind on side top or bottom could this be a aftermarket or el cheapo
Thanks matt

 

[Blaaster]

Fit one of a known size and throw the unmarked one in the trash....

 

[matt matysek]

I found a 230 in the "spare" carb guess I'll be using that one for now until testing time
Thank ya