[REDRiDER 119]

Hey guys, as some of you know, I'm relatively new here. Well, my question is (1)- how do I rejet my carb?
And (2)- What is the proper jet position on my carb for running my bike without the baffle?

Thanks!

[Asmith]

To rejet the carb, it is easiest to remove it from the bike.

To get to the needle, remove the top, pull out the slide assy and change needle.

To get to the pilot and main jets, remove the float bowl and access the two jets from there.

Here are the recommended part numbers for the POWER UP Mod for the CRF 150F.

-99103-KPT-0420-Slow jet (42 being the size, stock is 40)

-99113-GHB-1150-Main jet (115 being the size, stock is 98 )

-16012-KPT-921-Needle set (middle clip)

These parts might not be right for each and every 150. Proper jetting is affected by temperature, altitude and humidity.

If you install the parts above you also need to do the following,
-Remove the snorkel from the top of the air box, you need to remove your seat to do this.
-Remove or modify the exhaust baffle from the end of the stock muffler.
-Buy a hi flow air filter, TwinAir or Uni.
-You might also consider removing the backfire screen from inside the airbox, this will help increase the amount of air entering the carb.

Good luck! This mod really wakes up the CRF 150F.