VF500 Carb Rebuild Kits Resource for parts wanted.

Not a bad idea to remove the needles. Check to see if they've been shimmed and assembled properly if they've ever been apart. It's easy, just press down and quarter turn anti-clock wise. Sometimes the holder needs to be coaxed out by pushing on the needle a bit.

And yes, same needles on 86.

 

On carb one I removed the Main jet holder and the Slow jet and ran the smallest wire I had into the Enrichment tube. All things were gummy! Very Disappointing! I did not have a lot of time last night so did not attempt to remove the Main from the Holder. I did feel some gummy when I ran the wire in it as is. There wass no way this stuff would come out with just air. I am soaking them in parts cleaner now. I am pondering whether I should buy a gallon of Berrymans or not now, look into borrowing a friends ultra-sonic degreaser.

Travellng for next couple of days so I won't be able to do any hands on work.

 

Air alone was never an option.

Berryman or a sonic cleaner (or both!), why not. Just don't submerge the actual carb bodies in either in my opinion. The butterfly shafts don't need water in them and the enrichment valves (which are now brittle and fragile and expensive don't usually need to come out) can't soak in the carb clean (or any plastic or rubber).

Little more than freeing up some slides, eh?

 

Found and ultrasonic degreaser, nothing fancy but functioning well.. Lots of gunk came out of Main holder and slow jet. Enrichment valve area is worrysome
as when I attempt to put a wire into it it feels gummy. And the wire comes out grimy. Any suggestion on that matter may be useful. Garage stinks a lot less, VOCs are volatializing! Lot of stuff came out of the jets in the bath, I also did the float bowl screws, I wish I did not have to travel this weekend could have done the other three carbs maybe. I will be completel ready to Zen back into em next Tuesday.

See gunk below: Oh I am cleaning in Gumout. The Degreaser cup was pretty clean when I started the bath.

 

I am back home and hoping to get into the carbs again. Got some .25 mm wire to push through the enrichment valve. I will break down 2-4 and do the same ultra sonic bath on those. One carb at a time. I may need some guidance when come to un-tangling all of that throttle and choke linkage.

 

best wire size in sae is ten to twelve thousandths ". usually, there is a stopping point about twelve mm in that is clogged. when you peck-peck-peck the blockage away, you still need to be able get wire in to thirty-three mm depth if passage is open.

 

Acknowledged. Check out the black tar on the slow and main holder. I have them bubbling in an ultra-sonic bath right now. I got some jeweler stainless wire. 10 thousandths. Just like you said there was gumbo in about 12 mm. Got it cleared in one and two so far. Number 2 suffered a casualty pictured below. float screen was almost dust. Any idea where these can be had? I haven't had time to scan the web. I also lost one of those little plastic keeper discs that live on the fuel transfer o ring lans. I am not sure what function these serve?

 

Little more than freeing up some slides, huh?

Please post a pic of another one of the "discs" you are talking about?

The screens I'm not sure on. You might be needing to buy some float valve assemblies that come with them at this point. With your fuel tank, I wouldn't run without them. I'll look around for a source too.

Also, you should remove the main jet from the holder for cleaning (if you can).

 

Yuh, the slides come pretty clean, but I haven't gotten to number 3 yet, the bad one. I did separate the mains from the holders on 1, and 2. The gumout and ultra sonic get them squeaky clean. I did find one 86 float valve assembly on Ebay, and I also bought an 84 - 85 one which is an asian K&L part that looks the same. Carb 1 screen looked almost new, 2, as you can see was almost in powder form. In the days of old these would have been made of bronze. Plastic and ethanol are not good together. I will put up some pictures of the nylon ring at the fuel transfer oring tonight.

thanks

 

K&L make good replacement parts typically.

Good job so far.

 

The images are of the transfer tube between 1 and 2. I lost one of the really thin rings that you see on the first image. It sproinged off while removing the crispy old oring. Glad you told be to off the old rings by the way. It looks like they may be there to hold the o ring in place when removing the tubes?? Not sure?

I will be back at it tomorrow. I will need to break up 3 and 4. Likely get to the choke valves this weekend? I have been trying to take pictures of everything before I get to deep. I expect head banging at some point.

Wavey

 

Oh Capt 80's wanted to say special thanks for the tip and link for orings. I re-assembled number 1 yesterday and the 73mm bowl ring was perfection!
Many Thanks
WD

 

Hey, you are welcome!! They are perfect and CHEAP! The best combo.

Hmmm... without the oring, does the washer still stop at a "step" before the collar? Or does it snap into a groove?

And also... where did you lose the damn thing?!

 

The washer still stops at the collar. It kind of sits in a little groove between the oring and the end of the tube. It is nearly impossible to get it off. In attempting to pick the oring off with a little dental tool the washer sprung off the tube into thin air I did not see or hear where it went and it is semi-transparent soo..

 

I'm leaning very hard towards not critical to fit / form / function.

Seems to be something to keep the oring from being too compressed (not needed) or simply a retainer to keep the oring in place during assembly (not needed).

I'd be tempted to leave them all off if they were mine. I would do a few test fits to see how everything behaves and see if it affects fitment. A fuel pipe with them and one without.

 

did not have any orings at the air box to intake lans when I took it apart. Sizes if required? they look like they should have been pretty fat?

 

No orings on the plenum to carbs?!

 

Nope. I assume there is supposed to be something there hence the ring grooves/lans? I will attempt to figure out what size to order.
Had another float screen dissintegrate today. I ordered two the other day... I was hoping to start re-assembly of 2 and 3. Now I wait for parts. I did figure out the choke valve,that was a puzzle. Number three was the one with the cemented slide. I have restored that as of today. Guess I will head back over to ebay to gamble on some more float screens.

 

Plenum orings look like they should be 50 x 3mm? going to see what I can find before I head out on the KLR for morning stroll here in Colorado Front Range.

 

I ordered 50 x 3 mm Viton Orings.
at https://www.oringsandmore.com/
For information sake anyone in the Metro Denver area can walk in to Rocket Seals and by over the counter any oring, or have them made custom to your spec.
https://www.rocketseals.com/ I am a vacuum engineer in the Semi Con industry these guys have been life savers.

Happy Memorial Weekend, please watch out for the ameture driver or two on the road if you are riding this weekend

Peace