Posts
42
Joined
4/19/2017
Location
GB
Edited Date/Time
12/31/2018 8:58am
Hi all. Just got myself an 03 cr 125. Got it for a bargain as something is wrong. Firstly it totally spat oil out the exhaust, previous owner then replaced the crank case seal and took it out on the track where it locked up. Previous owner seems to think it locked up due to oil being in the 
crank?New top end then hasn't been ridden since. So now I've got it and noticed it has a keihin pwk on it. Not the standard mikuni. So now I'm in doubts, is the jetting out so much it caused it to seize? My main question is, is the standard jetting specs the same for the keihin as it is for the mikuni? I don't have space to ride it to test so getting base to start with for now would help until I get it out. Any help much appreciated. Thanks
crank?New top end then hasn't been ridden since. So now I've got it and noticed it has a keihin pwk on it. Not the standard mikuni. So now I'm in doubts, is the jetting out so much it caused it to seize? My main question is, is the standard jetting specs the same for the keihin as it is for the mikuni? I don't have space to ride it to test so getting base to start with for now would help until I get it out. Any help much appreciated. Thanks 
After fixing that front brake line, I'd start here:
http://motocrosshideout.com/2013/02/21/cr250cr125-pwk-air-striker-conve…
Vforce reeds
Pro circuit exhaust.
Base jetting in courtesy of digger.
38mm pwk air striker, can't remember slide.
Needle, 3rd clip
Pilot, 55
Main, 165
Slide, 5
Keihin pwk s63a1haa
Judging by the above article its not the correct jetting. Is this right?
Post a reply to: 2003 cr 125 carb swap help. Jetting