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
shakey0818

How to pick the right carb.

5 posts in this topic

Having some trouble getting my bike started for awhile now on my 2001 wr-246f.I have had the carb apart many times and cleaned it.Having less than 1k miles on it is pretty clean.A few issues i have with it are.

1)A few of the screws are stripped.

2)The brass hex head thingy that the float goes into is slightly bent from trying to get it out.

3)The air fuel mix screw is stuck in the closed position.

 

I'm thinking of just getting a new carb.Not sure what model number to get.I seen a few used ones on ebay but i'm skeptic to go with something used.

 

Is there a better carb for this bike?If there is what do you think i should go with?

 

Thanks Rob.

Share this post


Link to post
Share on other sites

You can probably fix all that, if the body is not damaged from the float needle seat being screwed with.

Stripped screws are from using a Phillips screwdriver. They are ISO screws, not Phillips, so you need an ISO screwdriver.....or replace them with allens.

 

 

You want an FCR/MX off of a 2003-2011 YZ450 or WR450 for the easiest install

Share this post


Link to post
Share on other sites

You can probably fix all that, if the body is not damaged from the float needle seat being screwed with.

Stripped screws are from using a Phillips screwdriver. They are ISO screws, not Phillips, so you need an ISO screwdriver.....or replace them with allens.

 

 

You want an FCR/MX off of a 2003-2011 YZ450 or WR450 for the easiest install

Ty for the reply.I know they were allens heads.Unfortunately they are stripped and theres no room to get anything but the short side of the allen wrench in their.I suppose i could try to cut the head off with a Dremel.I should just wait for my mechanic to get un busy.

Share this post


Link to post
Share on other sites

Here is my $0.02

 

Putting in a different style carb is ALOT of work....cables, jetting, etc

If you can find THE SAME EXACT one in good condition off of flea-bay, good

 

1) If it is the screw HEAD that is stripped, perhaps use a dremel cut off wheel and cut a slotted screwdriver slot in the head. If its the thread itself, you are looking at a heli-coil....just get a good one off of flea bay

2) The brass thing you describe sounds like the float seat, a critical item. The part usually comes in a typical carb rebuild kit, if the metal it fits into (the cast aluminum housing) is damaged, get a new / used one off of flea bay

3) If the screw is stuck all the way in I dont think the bike would even run. I assume you are saying its frozen in place. Perhaps a small pin-prick torch and some heat to loosen it? Make sure carb is dry and has no fuel in it

    Brass expands 5X faster than aluminum and the heating (expansion) and cooling (contraction) may free up any seizing that may be going on

1 person likes this

Share this post


Link to post
Share on other sites

Thanks Bob.Sounds like some solid advice there.As soon as i get some free time i may try those options.

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