250-500cc 2012 WR300 Starting issues driving me nuts, can anyone help?

Turn the headlight off and try again. seriously, works all the time for me.

possible you are slightly lean but check the strength and consistency of the spark first.i had very similar probs with my 2012 wr 300 and replacing the stator helped with starting but it still had inconsistent spark that caused another seizure.replacing the faulty reg/rectifier seems to of fixed the starting prob.severe/regular kick back is a sure sign of an erratic spark\faulty ignition

Hey Jaz_83 - Im in Adelaide too so we should catch up for a ride and I can show you some of my spots...

Heres a taste...


View: https://www.youtube.com/watch?v=D7KyVQB-EMs&list=UUwYw3-_efdLwq40eliaCqvw

Hi Guys

I also have a 2013 model WR300 that's hard to fire up.
Only when cold though, first thing in the morning and since I'm about to ride the A4DE I need to get the technique right so I don't loose points in the cold start test. (bike must start and pass a flag under its own steam within 60 seconds)
It starts first kick when warm.

So the set up:
Stock jets in Mikuni carb
I've set the float level
Kick start positioned correctly (all but against the pipe - can touch it if you push it in)
After a few (lots) kicks it starts but then stops, a few more kicks then she fires up and idles nicely on the choke.
I turn the fuel tap off when not riding - before kicking I turn fuel on - observe fuel filter fill up and stop running fuel through it- then turn fuel off - then kick.

Should I lean the bike over and get fuel to run out of the overflow or something? Keep the fuel tap open? Any ideas would be helpful.

i've discovered that mine is much harder to start if air screw is more in. if air screw is more out, it starts 1 kick.

Jetting really effects the way my starts.