Total Motorcycle Community Forums

does the idle misture screw

affect the bike at higher rpm?

or is it just for iddling?

meaning does it affect the mixture while cruising?

just idling


All it does is set the gap that the throttle butterflys have when the throttle is closed.

hmm ok that what i thought
but heard somewhere that it does.

and then i kinda thought my bike did,
not accelerate ok when too lean!

so once the accelalator takes over it dont matter?
ill have to tell my bike u said so

anyway its a 2 stroke
so its kinda hecktic anyway!

anyone know anything about the yamaha ag200?
went to the dealer and it was soo cheap!!

TechBMW wrote:just idling


All it does is set the gap that the throttle butterflys have when the throttle is closed.

Tech,
I agree with the idling only part, but doesn't the idle speed screw set the butterfly gap and the idle mixture screw (often plugged on newer bikes) regulate the air/fuel mixture in the idle circuit?

flynrider wrote:

TechBMW wrote:just idling


All it does is set the gap that the throttle butterflys have when the throttle is closed.

Tech,
I agree with the idling only part, but doesn't the idle speed screw set the butterfly gap and the idle mixture screw (often plugged on newer bikes) regulate the air/fuel mixture in the idle circuit?

the idle mixture screw does indeed control the idle circuit, which is a circuit that flows fuel at all throttle openings.

sidecarguy wrote:hmm ok that what i thought
but heard somewhere that it does.

and then i kinda thought my bike did,
not accelerate ok when too lean!

so once the accelalator takes over it dont matter?
ill have to tell my bike u said so

anyway its a 2 stroke
so its kinda hecktic anyway!

anyone know anything about the yamaha ag200?
went to the dealer and it was soo cheap!!

You certainly must be
A master of Haiku.

Because your posts are often
Structured in similar fashion.

Or it could be that
Your screen resolution

is set at a mere
eighty by sixty.

5
7
5


I'm not a poet
Though I always try my best
My Haiku have to many syllables

lol

nitrus wrote:

flynrider wrote:

TechBMW wrote:just idling


All it does is set the gap that the throttle butterflys have when the throttle is closed.

Tech,
I agree with the idling only part, but doesn't the idle speed screw set the butterfly gap and the idle mixture screw (often plugged on newer bikes) regulate the air/fuel mixture in the idle circuit?

the idle mixture screw does indeed control the idle circuit, which is a circuit that flows fuel at all throttle openings.

Yes. Sorry for the (my) confusion. It still only affects the bike at idle. Due to the nature of vaccuum and venturi (bertolli's priciple, etc) when the throttle opens about 1/8th of the way, the needle jet/jet needle control the fuel/air mix entering the cylinder..