2004 FE 650E Accelerator pump rod missing

It's a Keihin, should be able to find carb parts just about anywhere that sells bike parts. Ktm dealer, summit racing, Dan at Motoxotica, Offroad boss. Yeah, that part should be very easy to find. Though, I'm curious about your terminology. Aren't accelerator rods found in the CV carbs and not FCR?

I had Dale Lineaweaver jet my carb.
He said, "some people cringe when I do this" and then he pulled the AP rod out.

I believe he said the reason it doesn't need it is this:

The FCR was developed for I-4 engines with a bank of carbs with displacements from 150-250 cc's per cylinder.

Those bikes needed a little shot of fuel to get them going from idle.

The FCR was then later adapted to singles, and they kept the AP.
perhaps it is/was needed on 250-450cc bikes.

A 650 has 3 or 4+ times as much displacement per cylinder than a I-4 750 or 1000.
Idk if the intake velocity is 3-4 times greater, but it sure is likely.

So, much higher intake velocity negates the need for a shot (ie; an accelerator pump)

That higher velocity sucks enough fuel through to get the bike going from idle, and also from way below idle speed without even touching the clutch.
I've experienced this many times, it rarely stalls.



Check your metering rod out. If it's silver/grey, and no markings on it it's probably a Lineaweaver needle.

Also, it may have an adjustable air screw, on the left looking through the intake side of the carb. There would be a brass screw with a spring behind it, instead of a fixed jet.

FWIW, I paid $200 for a complete jet kit installed.

i think you can loosen the clamps and rotate the carb to pull the top plate off.
Then you can lower the needle by raising the clip a notch next time you ride a mile high.

You can also swap main jets out thru the bowl drain but be careful you don't tighten it too much.

my lineaweaver needle was made from brass John

I have a brass Lineaweaver needle too. I'm still running the AP rod though, with the BK mod to manage the stroke. Only need a couple of tenths of a mm for a nice snap, any more and its too hard to ride in technical terrain.




With this arrangement, the stroke is adjustable easily externally, and the gap to the locknut <> the stroke.

So I recently bought a f 650 2004 and the Accelerator pump rod was missing so I rgoogle it and this thread come up . It's the same. Bike I had it shipped from Texas. Lol small Husaberg world