[kwik69]

Hi all, I just found your site and spent the last hour browsing through the forum.
Wow! a LOT of knowledge here, just what I was looking for. :hail:

I have a fuel problem on a '84 200 trx. My son just rides it around the field or through a couple wood trails we have so it never really gets over 2nd gear and no creek swamping issues like I have read in other posts.
It underwent it's first rebuild a few months ago when it was getting tired and a clunking sound appeared and it has ran fine since then.

When starting it the other day I noticed a fuel leak. It ran fine but fuel was dripping everywhere! The leak stopped when I shut off the petcock.
I noticed the fuel was running from the carb, into the air box and running out of the drain beneath the airbox.
It sounds like something stuck open inside the carb. Having never worked on a carb before, I was looking for help or tips.

Any suggestions would be greatly appreciated. Thanks!

 

[Pain]

A guess, and assuming it's not leaking around the gasket, then it's the float stuck.

Simple fix would be to put seafoam or gumout in the tank and run it hard for a few hours, but the best approach would be to pull the bowl and spray it inside with carb cleaner.

 

[Redracer]

It is a simple thing to do. Take the bowl off the bottom of the carb.

http://www.bikebandit.com/houseofmotorcycles/showschematic/m2540sch10366

#3 is the float.

 

[Saber6]

I agree with Pain and Redracer.

 

[kwik69]

Thanks for the schematic, that helps a bunch! I will open it up tomorrow. It looks like three screws on the bottom is what holds the bowl in place. That sounds easy enough- as long as 14 microscopic springs dont fly all over the driveway. :blink:

I'm sure it's not leaking from the gasket, it's like it runs through the top of the carb and overflows out the rear port- which goes directly to the air filter. I'de like to run it with some gumout but the leak is not a small one- it's quite a bit of flow.

I ran seafoam through the last tank- maybe it loosened something up? I'm going to take your advice and take it off/clean it and make sure the float is free moving.

Thanks!

 

[Redracer]

I would put money on the float being stuck.

 

[tomgodd]

Agree^^^^^

 

[kwik69]

Thanks a lot guys, you were right!
I couldn't reach the rear screw from the side openings with the tools that I have, so I had to remove the air box to get to it which was a P.I.T.A. but once opened, it was easy access. There was a little gunk in the bottom of the bowl. I cleaned it with carb cleaner and sprayed the floats so they moved freely and cleaned anything else I could. Put it back together and all is well. My 9 yr old and I had a great time doing it accompanied with the feeling of accomplishment.
Thanks again for the tips!

 

[Pain]

Score!!!!

cool

 

[Redracer]

Awesome, glad you got it fixed!!!!

 

[TRX2fiveO]

Welcome to the forums and glad you were able to repair you quad.... post up a few pics of the old beast.

 

[Saber6]

Glad you got it going!! Welcome aboard.

 

[kwik69]

I thought I would follow up in my previous thread to provide some background.
I seem to be carbon fouling plugs now. I determined this by consulting a plug chart.

In the description, it says "...This is most often caused by an over-rich, air/fuel mixture.
Check for a sticking choke, clogged air cleaner, or a carburetor problem - float level high, defective needle or seat, etc..."

1. Could the plug gap also be a factor? I didnt have a gap tool when I changed the plug, I just 'eye-balled' it.

2. Anyone know what the proper gap would be, I found my gapper.

3. What's the proper way or amount to reduce the richness of the mix? My intention was to turn the adjustment screw (#8 in this schematic) inward about 1/4 turn. (sorry, carb noob here)

4. Might it help to run another batch of Seafoam through it?

Any suggestions?