Streetmedik

I might drive to Tulsa to an Arctic Cat dealer and see if they have a carb kit in stock.

1 minute ago, Mech said:

https://www.joom.com/en/products/5d8596348b45130101460664

 

Look right ?

This is what I get.

Thank you 

These photos were before I cleaned it, so please excuse the grime.

This one is very hard and as flat as a board. The float moves freely. I'll see if I can find something that tells me the correct float height. 

In looking on parts sites for a carb kit, it seems in 2003 artic cat made several variations of the 500.  How can I know which one I actually have in front of me?  I tried search8ng for the VIN. Not much help.  Some sites said it was a 2003 Caterpillar, some said Massie Furgason. I'm pretty sure it is neither of those.

6 versions of the automatic transmission Artic Cat 500.

I am guessing the accelerator pump is simply not needed on this 4 wheeler.  I was able to get it to start and throttle up just fine.  Need to get a carb kit as it leaks like crazy at the bowl top.   

So, while I am searching for a carb kit to order, I will tackle the brakes.  Calipers are nasty. Perhaps I'll tear them down tomorrow.  For now, I'm tired.  Worked on rebuilding the Kubota tractor that we use at work.    Seems odd that since I retired from ambulance work... Everyone suddenly thinks I am a mechanic.

1 minute ago, Mech said:

 

In the pictures it doesn't look like there's anything attached to that part you have circled either.. Are you sure the accelerator pump doesn't work off vacuum? It could be that when it's idling the diaphragm gets sucked down, then when you open the throttle it goes up pumping fuel..  That's a fairly common system.

It is mechanical.  And if I pull up on it, it squirts a mist from the nozzle in the intake side of the carb.  I spent 2 days unclogging that nozzle.  Then to learn it isn't used. By time I get this thing finished, I am afraid I might want one myself.

It is fully seated as far as I can tell.  The boot was already bolted onto the cylinder. I just assumed it was mounted correctly.

As can be seen in my last photos. The carb is not sitting level. Is it normal and correct for it to be “slanted” so that the bowl seam is not level?

I have been searching Google to try and find a photo of the carb mounted on the 4wheeler so I could see if it should be level or not. However, I can't find a good photo.

Just now, Cj Winds said:

The lever does not attach to anything. If carb is leaking at top of bowl then the bowl gasket is prolly leaking.

Why would they use a carb with an accelerator pump and not use it?  Don't get me wrong, absolutely not doubting you. Just don't understand the company's thought processes.

Where is the best place to buy a carb kit?

Ok friends. It is 90% back together. It starts... And I couldn't have done it without your help.  Thank you.

Now the next step.  Carb is leaking at the top of the bowl.  And it doesn't sit level. Should it be set level on the bike? See photos.

The other question is about the accelerator pump lever. Circled on one of the photos.  What does it attach to?  I have looked through the documents I was given links to and searched google.  Can't find an answer.

I appreciate all the help.

I have looked through the service manual that was provided in the link above.  Cant find what attaches to the lever for the accelerator pump.   What am I missing?

1 hour ago, Cj Winds said:

The threaded hole on the bottom of the carb is a place to screw a bracket down that holds the idle adjustement knob

Ok thank you. I’ll have to see if it is in one of the boxes.

ok got it together and mounted.   Found a good video on YT.

now, next question.   What attaches to the lever for the accelerator pump?

1 hour ago, Mech said:

Yes the needle sits under that plastic bit, but there are other bits missing.. a small metal washer and one or two plastic spacers, and a small spring.

I had a big spring. No little spring and no washers.

2003

1 minute ago, davefrombc said:

There isn't one for  your 500 in the downloads section here but there are for many  arctic cats and most likely one for  one of the older  carburetted ones would serve for  it too. Do you know the year of it?

 

I also found this photo with a google search.

Does anyone have a service manual that could look for me?

So, the needle doesn’t go through the plastic piece. Just sits under it

Ok, next question on the carb.  Which way does this go? A or B?

This is the threaded hole I am trying to figure out.

9 minutes ago, davefrombc said:

The "brass pipe" on that carb might be a "hose barb" that screws into the  carb (1/8"  pipe tap or metric equivalent) to attach the  hose to and the hose barb may be somewhere else in the box.

The brass pipe is inside the bowl and feeds to the rubber hose near the bowl drain. 

12 hours ago, Mech said:

Well.. If you pull it to bits you will be able to see for sure where it goes.. 

Try blowing up it..

🤣 I read that last line wrong the first time.   I read it as try blowing it up.    I was going to say it looked like my brother in law already did that.

I’ll take a closer look at it when it warms up a bit outside today.

21 minutes ago, Mech said:

The breather line Dave was mentioning will just be a rubber hose pushed onto the brass pipe that would be in that hole normally. That breather vents the float chamber and serves as an overflow for fuel if the float needle sticks or gets leaned over too far or some such thing. On most bikes the hose just dangles down a few inches to drain the petrol under the bike, rather than it sitting on the crankcases.

There is a rubber hose attached to the bowl drain that goes to the overflow pipe inside the bowl.  This hole is threaded, like something should screw into it.

Any idea what this breather line looks like so I know what I am looking for?

2 hours ago, Mech said:

My trick to getting carbies into the manifold and air ducting is to use a very long nosed pair of pliers with bent nose.  I keep them closed but use them to shoehorn the rubbers on from below to top. You get the carby in as far as possible, then insert the pliers at the side and push them down and under to slip the rubber on there, and get the carby inside it, then work the pliers up and around the side pulling the rubber out slightly.

Thank you, I’ll give something like that a try tomorrow.  I reached my frustration limit today and came back in to warm up.

This is the carb that was in the boxes.

I also can’t seen to figure what goes in this threaded hole on the bottom. Just behind the pilot screw.