engine revs high when stopping

There are TWO screws BOB. They work together. The idle mixture screw
may be hidden under a plug, or a previous owner might have drilled the
plug out so he could tamper with the idle mixture setting. Find
yourself an online parts diagram and look at it to see if you can find
the idle mixture screw. It might also be called a pilot screw.

If somebody has adjusted the idle mixture screw to make the idle
mixture richer, the engine will idle too fast when the motorbike is
hot. If you adjust the idle SPEED screw to make the engine idle slower
when it's hot, the engine will stall when it is cold and the engine
will be hard to start.

The only other thing I can imagine besides the idle mixture screw being
tinkered with by some previous owner is maybe the float is set too high
or the float valve leaks and the engine gets too much fuel at idle
because it's easier for it to suck up gasoline when the level in the
bowl is too high.

But, if the level was too high, the engine would tend to run "soggy",
it would gargle a little bit as you twisted the throttle.

 

also when i was a teen i had a husqvarna 250 it did the same thing to
me then i paniced i laid the bike down and it was almost full throttle
the kill button wouldnt stop the engine i kicked the spark plug until i
broke it off and the bike stopped running i sold the bike that day for
100 dollars and the guy who bought it had it running fine a hour later
he told me it was a small pin that came out out. of where i dont know!

 

Hi Bob

I'd expect to find two "idle screws". One of them is to adjust the RPMs
and one is to adjust the mixture richness when it's idling.

People are telling you to adjust richness, not RPMs.
If the mixture is too rich, it will idle too fast after it warms up.

I think you need to go get some information on your carb.
That should tell you what adjustments there are and how
to adjust it.

 

Maybe it's a very subtle relationship.

 

http://www.huskyclub.com/book.htm

RTFM

 

Can I just say something here?

The fucking gear you are in makes no fucking difference to the fucking
engine idle speed.

 

yes i ajusted the idle screw to lower the idling a little the bike
When you take your hand off the throttle so it will idle down and it
doesn't, are you sure the throttle grip is going all the way back so it can
idle down? Have you tried manually turning the throttle grip in the other
direction to make sure? If not, try that and see what happens. If that
works, then you will need to adjust your throttle cables length, or
basically you wuill need to grease the cable, or replace the damn thing.
After all the carb adjusting youve done.... idle screw etc.....If any of
these do not work, and your carb has sliders inside, then you will need to
physically see that they are moving up and down without any hesitation.
This could, and I say could be caused by an overtightened bolt, or some kind
of vacuum leak. To check for a vacuum leak, just spray some carb cleaner
around the points where the carb bolts up to the manifold. If this affects
your idle, then you have a leak which needs to be fixed... if not, then you
can rule that out.
Are you leaking gas from the overflow tube?? if no., then no problem..
if yes, then I would check the float valve first and if ok, adjust your
float lower.

Hope this helps...

Fwed

 

I say, try and get your attributions sorted out, old chap.

 

You might have an air leak, or a leaking crank seal.