HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
Booth

03 wr450 Hot Start Lever Questions

7 posts in this topic

Howdy,

I am new to the forum and new to a recently purchased 2003 wr450 with low hours. Can someone please explain what the hot start lever does (is it compression release or secondary air bleed or what). My lever will not move with all the force I can give it with my index finger. How far should it be able to pull? How easy to pull it? Does it have a spring loaded return. ANyone who is familiar with this problem and can offer good lubrication tip for freeing it up would really be helping me out.

PS - I love this motorcycle. I used to have a few YZ250s back in the late 80s and then got out of riding for 15 years while I was in college, job kids etc. But now I am back and really excited about this bike it is really nice.

Booth

Share this post


Link to post
Share on other sites

I'm not certain with the 03's but the 05 & 06 HS lever actualy lean the a/f mixture to make stalls during warm conditions eaiser to start.

Share this post


Link to post
Share on other sites

To answer some of your questions:

The lever should move using very little force

It is spring loaded so it will return when released.

If it is stuck, remove the carb and disassembly it to find the problem.

The hot start is a must (at least on my bike) when stopped warm.

Besides, it could be stuck in open position...making your bike run lean(er) depending on how it is jetted now.

When I pull this lever when the engine is running it increases the engine speed with a couple of hundred rpm's.

If I were you I'll get this cured immediately.

Just my opinion, no one elses...

/Thomas

Share this post


Link to post
Share on other sites

the lever should be very easy to pull in with one finger. it should have about one eigth inch of slack at the lever. it's a very simple set up. it's also very easy to put the cable in a bind when the tank is reinstalled or other work is done. look at the side of the carb. you will see a single cable comming into the carb from under the tank. it is held in with a plastic nut like fitting. remove the cable at the carb and check for problems. be aware, the "nut like fitting" is plastic and the threads will strip with very little force or if cross threaded.

Share this post


Link to post
Share on other sites

When i buyed my 2003 wr i didn't notice that i don't have the hot lever start. When my bike it never ever need to use it so i dint bother replace it yet.

Share this post


Link to post
Share on other sites

I never use mine either.

It lets extra air in the carb for when the bike is hot.

If you remove the stock plastic nut on the carb to take the cable off and inspect, you'll most likely be looking for an after factory metal nut as that cheap plastic one goes ka-put very easy.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0