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Jetting and a few other questions for a 07 150R

Posted: Sat Feb 14, 2015 3:08 pm
by Denton
So here is what I am working with jet wise.
Starter jet 68

Pilot Screw 2-1/4 turns

Slow jet 42

Main jet 140

Jet needle NHNT

Jet needle clip 3

Leak jet 60 has a good squirt about 5.5ft

My riding will mostly be from 500ft to 1000ft. At about 70 to 100 degrees. Most of the time being 80 to 90.
So I read that the 07 jetting specs are trash and the later jets are the way to go
So according to the book I need
Starter jet Cant find

Pilot Screw 2 turns

Slow jet 38

Main jet 135

Jet needle NMQS

Jet needle clip 3

Leak jet Cant find

To keep in mind there is a Pro Circuit T-5 Slip-On Exhaust. Which I believe was put on to quiet the bike down some. Does this new jetting specs look right?

Posted: Thu Feb 19, 2015 1:40 pm
by crfsonly
We've had great success with the JD Jetting kit:

http://www.crfsonly.com/catalog/product ... ts_id/2253

Ken