250-500cc First WR300

Hi,
I have a TE450, and now I own a WR300 as well. I picked the bike up over the weekend, but the bike won't idle. I adjusted the idle screw (on the carb with a jam nut?)..nothing...and then I adjusted the throttle cable...bike starts let it sit and it will die....clogged jet?

As the bike is stock, is there a sticky on all of the mods available for this bike? I love the smooth acceleration, bike runs good...I just need to get this idle licked.
Thanks,

i had the same problem with idle on my bike. ultimatly i ended up changing my carb to the Keihin PWK. Its still a bugger to cold start but im working through that, but it idles sooooo much better now... good luck!

I have a 2010 wr300...Mikuni ...the AS is turned in all the way and it's locked by a jamnut....turning it out with the jamnut is worse....i will try what you recommended...i was looking at a jet kit so i will try this out. thanks..i am a neebie at the wr so i am open to suggestions to further tune this bike...thanks

that's not the AS. that's the idle screw and should not need messing with. back it out til it's flush with the nut, maybe a thread or two poking out, then lock the nut.

the air screw is between the fuel line and the boot. lil tiny sucker way in there. back it out 1.5 turns from all in after the clean out dirtdame suggested. if you are not familiar with the jetting process please take it to a mechanic. not a chop just saying its not worth burning it up. i got mine to go ok with the stock needle/nozzle with some fiddling but its super easy to go way wrong with the stock nozzle/needle combo.

i finally got the JD kit and replaced the jet nozzle with the #9, the red needle @ #3, 430 main, the rest per directions.

it was good before, it's outstanding now. just the sound it makes idling and coming down the trail makes peeps comment. and, move the hell out of the way.

if you hammer hard and are using the stock stuff do a #45 pilot to start, AS 1.75 out, needle clip in the bottom groove, 440 main as a safe baseline and trim from there. again, its easy to go way wrong with the stock nozzle/needle combo. if you try and lean anything out from this, turn the AS back into 1.25 to 1.5 at thevery max and keep reading that plug.

i HIGHLY recomend the JD kit at the very least, no room to type all the reasons, next would be the Lectron carb.

do you ever lay the bike over on its side until the gas runs out of the carb then pick it back up and kick. Sounds bad but it really does work when the bike is cold Just try it