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

Your bike has a completely different electrical system, so you can't really compare the starting with regards to power draw turned on or off.

Bend

bend tang upward to reduce fuel height in float bowl.

Here's a really good pictorial: http://www.allthingsmoto.com/forums...carburetor-float-level-more-commentary-13608/

Some more info: http://justkdx.dirtrider.net/floatlevel.html

Note that the method is the same on every carb, but the target height varies. As a starting point, just set the floats parallel to the bottom of the carb body. They are probably way off right now, seems like they all are off as delivered.

Ok so the mikuni website says the float height should be 6-7 mm which seems to be where mine was set. Have now removed the screen also.

Can anyone tell me how to remove the throttle cable from the slide??

All good, so i have worked out that it obviously has the JD kit with 420 main, 32.5 pilot, have set the floats at 7.25 mm, red needle on the second clip, about to try with air screw at 1.5. Will see how it goes. Have not changed much apart from minor adjustment on float height.

Success, 1-3 kicks, i'm happy with that. I was about to pull the plug just to see what it looked like and noticed a tiny amount of oil around it so i tightened before loosening. It took about an eigth of a turn, clearly a potential contributor to the problem. So between a minor adjustment on float height, a tight spark plug and a minor air screw adjustment its not bad but still could be cleaner, maybe a touch leaner on the air screw. Thanks for all the advice guys

I would also suggest you try a different two stoke oil,as I have never found that motul oil to burn clean,always seems to run rich and lots of black dribble out the pipe.
I use global racing oil full synthetic and it is awesome,50:1 have done 80rs now and still sounds like new.

Don't feel bad, nobody can start my Huskie, nobody. Open throttle a hair, find TDC, and kick it like you mean it, with boots. Very poor kick start design. My knee hurts just thinking about it.

Must be lucky but my 09 WR 300 starts easy. Shake the bike, lean it over till some gas comes out the over flow, stand it up, pull out choke and within two kicks it starts. Even wearing tennis shoes.

Wow, can't believe they shipped your bike with the kicker like that!

Believe it or not your post about the kickstarter just reminded me that I loosened to bolt and forgot all about. I have ridden since then too. Will check it ASAP haha

Hi. I rebuild engines.

A buddy of mine, who owns his own bike shop, runs Amsoil at 100:1 in his KTM 250. He has over 200 hours since the last rebuild.

Wow, from 32:1 to a 100:1, crazy variation. I think my next tank onward it will be 40:1 but that is as lean as i will be going.

Depends on how hard you run the engine. The best dyno-proven ratio for HP is 24:1. The more oil, the higher the hp and engine life, but the harder it becomes to jet for. It's harder to jet for 24 than 32:1 which is what most of the racers down here run.

guys i know theres a risk but im not so sure thats to outa line in this age oils are better than ever a buddy of mine runs 80:1 amsoil makes oil for saws an weed eaters that you run at 100:1 if you read the back of a bottle of golden spectro it says its good to 164:1 and if you go to micro blues [ the folks that did the bearings in Walts 177] theirs a weed eater running 200:1 iv run H1R @ 60:1 .. no ill effects i bet we could all run alot leaner if we had the balls to try it