Planet Minis

Sl47

so i just picked up my 150r and it takes a long time to get it started and once i put it in gear and give it gas it just dies so i can barely get to ride it
does anyone know if there is something wrong or what?

Pal

yea mine does that too, it gets a bit better when you break it in, but the problem lies in the jetting

tibs

brand new or used?
if its used.. try cleaning the carb. replace spark plug. and if it sat for a while change out the gas.

jthenderson669

i don't own one, but i ppl i know are going pretty rich on the pilot jet, and wiring the accelerator pump to get the stall out of it, so it pumps 1:1.

dood

You need to richin the jetting.
Most likely you have a 38 pilot and prolly a 138 main jet

You need to get one of those R&D billet float bowls
42 pilot
143 main jet.

This is base line settings for all the CRF150R's I've built

Sl47

i rode it today and i think it finally broke in so i will see what happens

bmxdad2001

Sl47, I've tried quite a few jetting combos on my son's crf150r. I've search countless forums seeing what everyone else is running, and I have tested many different settings. This combination seems to work best. First o-ring your ap linkage, you can check thumpertalk.com forum on how to do this. Then take the ap diaphram out and cut the nipple of flush with the base. Next change your 40 slow/pilot jet to a 45. Change your 60 leak jet to a 40. Swap your 135 main for a 130, and if you like you can get an ajustable fuel mixture screw from white bro's. This just makes it easier to adjust your fuel air mixture while the bike is running. I set mine at two turns out and ajust from there depending on the air temperature. These changes get rid of the nasty bog and your bike will absolutely rip!! Have fun.