07' RM 250 carb rebuild

RM2fitty

RM2fitty

Good evening all,

I recently bought a 07 RM 250 and gave been trying to do a light over haul on the bike. I'm stuck on thge carb however. I bought a rebuild kit and cleaned up everything. However I think my jet block is warped.. it isn't allowing the needle and slide to move smoothly. Idk if the block warped after i pulled the bolts out to clean everything up. The slide and needle move freely until I tighten the screws down.
Then it gets stuck. I am trying to find a shop manual that has part # in case u need to order a new block.
 
Mihylo33

Mihylo33

RM2fitty:
Good evening all,

I recently bought a 07 RM 250 and gave been trying to do a light over haul on the bike. I'm stuck on thge carb however. I bought a rebuild kit and cleaned up everything. However I think my jet block is warped.. it isn't allowing the needle and slide to move smoothly. Idk if the block warped after i pulled the bolts out to clean everything up. The slide and needle move freely until I tighten the screws down.
Then it gets stuck. I am trying to find a shop manual that has part # in case u need to order a new block.
Click to expand...

Welcome!
Something isn’t right. I don’t think the carb is warped but something didn’t go together right.
 
Trfsrfr

Trfsrfr

That is weird.
Is there anything stuck under the cap that shouldn't be there and is gripping the cable maybe?
And where does it get stuck? low throttle, wide open?
 
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RM2fitty

RM2fitty

I will take pictures when I get off work today but the needle is kinda catching the sides of this circled. Even with the old hardware. I thinking the jet block slightly warped relieving the pressure off the screws taking it off. But it slides smooth until low throttle
 

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RM2fitty

RM2fitty

Thanks for the replies guys. This is my first dirt bike and im pretty mechanically inclined from fixing aircraft and parts but bikes are a new thing I'm learning. YouTube has been my friend lately but not much is on this carb.
 
RM2fitty

RM2fitty

Turns out I was right, the jet block isn't sitting right for whatever reason. I have to pretty much line the bottom up and not the screw holes then on screw might go in slightly crooked till it tightens down all the way.
 

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Trfsrfr

Trfsrfr

Wow. Cool.
I'll add that to my list of known problems to look for. Thanks for finding it!
RM2fitty:
I have to pretty much line the bottom up and not the screw holes then on screw might go in slightly crooked till it tightens down all the way.
Click to expand...
So its fixed?
 
RM2fitty

RM2fitty

Trfsrfr:
Wow. Cool.
I'll add that to my list of known problems to look for. Thanks for finding it!

So its fixed?
Click to expand...

I haven't thrown the carb back on the bike but the original problem so far is good to go. Hopefully it doesn't mess up again from vibrations etc. I'll know when my throttle Is stuck in the closed position
 
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