250-500cc First of many desperate pleas...

Hi, I'm just trying to power up my new WR300. I can't figure out how to remove the throttle cable from the slide. I gotta get rid of the throttle stop, and thow the new needle in.

I ride at 5000+ ft average temp is 18C (high 60s F?) I put in the 40 pilot, and have the options of 380, 420,430,and 440 mains. I'm going with the 380. What clip should I put the needle in? 3rd from top?

I got it. But why do I have a slide that is 5.0 and another in the power up box that is a 4.0?

Depends on how it was setup and which demographic it's targeted too...usually manufacturer tend to err cautious and set the bike's up on the richer side so that the user doesn't seize the bike up.

Have a look at the Jetting chat sticky's and it will point you in the right direction.

Try 3rd clip if that's the GAY needle. That's what I'm using on my 250. And you may need to go leaner on the pilot.

Thanks, it is a bear to start and bogs as soon as I turn the choke off. Won't run unless choked. Haven't touched the air screw yet.

What is the air screw set at?

Don't know. Forgot to check. It should be between 1 and 2 right?

Why didnt the dealer take the stop out? Did you buy it in the crate?

They said it was so they could preserve warrantee, and if I wanted to have warrantee work done to put the thing back in!?

I managed to get it out, and an initial rejet. This bike is a monster! I need to get it to idle when it isn't choked, but besides that, I think it's close. I only rode it around the block, and did a second gear power wheelie by accident. It was bogging low, then it hit!

The air screw, idlescrew, and pilot jet all need to be adjusted to dial in the pilot circuit. There are some links in the jetting chat or jetting database threads that explain how the pilot circuit works. Out on the AS for more air(leaner), in on the AS for less air (richer).

That's kind of what I figured (lean pilot). I'll swap slides, then reassess. Thanks for telling me what the different slides do.

A good starting point for the air screw is 1 1/2 turns out from seated. Then get it fully warmed up and then try adjusting the idle screw and see if you can get it to idle. When adjusting the idle and AS if you let it idle for too long it will load up and make it harder to get dialed in, so after adjustments ride it to keep it cleaned out. And dont test ride it without tightening the idle screw lock nut, cause it will move. I would start with the #4 slide.

That is BS. I am a Husky dealer.