Odd jetting?

[metalforever]

Ok, i bought my GS used which was apparantly a stock bike, it didnt appear to be modified at all.

However when i got into the carb the main jet read 120, i thought it was meant to be higher than this?

I also bought a replacement carb with 115 mains in, of course these are UK parts but surely this isnt standard?

Should i upjet the bike to what is said to be 'stock'?

[The Buddha]

125/40 is stock in canada for an 89-00 GS. However the needle profile greatly determines the mains that are right. You may have very thin needles and that may be why it worked with that main.
Cool.
Buddha.

[sledge]

Check the ID no on the RH side of the carb body. UK (E-02) reference is 01D30. 120/40 are the standard jet sizes for the UK market.