SAAWEEET 81 ATC 250r questions


I recently got an 81 ATC 250r which is SEMI-molested. Its missing some stupid parts (like the entire front brake assembly sans disc on the wheel, and front headlight assembly). Unfortunately, the previous owner had a dog, who decided to eat the seat for lunch one day too.

Now the good-This thing STILL has the warning stickers from the dealer on it! The engine is also VERY clean and stock, except a "Uni" filter on it, which is coming OFF! The bike also starts 1st/2nd kick.

Ive been into bikes for awhile, and it has this problem-Turn the gas on, it pees out the carb until you start the bike. Im thinking stuck float and a carb rebuild. Guy I got it from said its a fuel petcock, but I think carb rebuild is in order...Correct?

I dont care for the stock handlebars either-they seem kinda goofy and I would like an aftermarket set-any suggestions/success stories? I found plenty of seat covers, but does anyone manufacture seat foam for this year? Should I keep the bike stock considering its year, and go "vintage" class? Very easy to do considering it still has dealer stickers on it, and its condition.

I've never really seen a float stick but check the needle and seat. Could be dirty, could be worn. The guy that told you it's the petcock is special.

For the seat, go to 3wheelerworld dot com and look for a guy named moshman. He and his wife can hook you up with about anything you need in that department.

A true "stock" 81R is going to be worth more then a modded one but they're just not as fun. The basic design of the motor was unchanged for 4 years. The biggest power add you can do internally is a port job. Take it to someone that knows what they're doing and you'll have a reliable monster.

Thanks ATJ! I was figuring a port job, and I also find that they make boyesen reeds for my model too. I use to restore classic cars, and IF I change anything, i'll keep the stock parts in a box. Im also thrilled that I found a stock airbox on ebay tonight for $20! There's an aftermarket "UNI" filter bolted to the carb right now, and thats 1st to go-just too risky either having it fall off, or just not enough protection from the "elements".

A mild head shave and rechamber will help too. :bonk:

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By MotoXRacer_19
      Does anyone know how to, or if you can, change your AMA number? The race number, not the full thing. 
    • By MrPickles
      I have a 1990 Suzuki RMX250 for sale.  It was bought from a friend who bent the crank back in 2000 and took it completely apart (down to the nuts, bolts, and washers).  The frame was powder coated black.  New crank case bearings, new gaskets for crank case, cylinder, and cylinder head.  All transmission bearings were cleaned and checked for wear or damage.  The crank was rebuilt and balanced by a local Harley shop.  New OEM piston and rings.  Cylinder and head are in excellent condition and worth almost as much as the entire bike, I think.  Brand new FMF Gold Fatty pipe.  New front and rear Renthal sprockets and new D.I.D. chain.  New grips.  Includes the original headlight and odometer (not shown), Mikuni TM38 carb has been cleaned and rebuilt.  Seat is original and in perfect condition. Runs perfectly.  Could use some new plastics, new foot pegs, front fork seals, rear tire, and a tune by someone better than I.  Pink slip in hand, but hasn't been registered in years.  Will throw in a Clymer manual.  The bike is a rocket and too tall for my 5'9" frame.  I'd like something a little more convenient to ride with my young kids. Asking $1800 OBO.  Serious inquiries only please.  Price doesn't include any shipping.   
    • By faizakhtar125
      Hey guys I just bought a bike last night. So the seller said the bike will turn on but then die. We didn't try it because it was really late at night and it was raining (seat was wet). But he said if you bump start it, it will turn on and ride. So what do you think the problem is? I just want to make sure it runs... I probably won't be able to bump start it till Saturday (rain)... It's a four stroke, and I know absolutely nothing about them. Thanks.
    • By Eachan
      I have recently been having problems with my honda mtx 125. It will run great for 10 minutes then it will die on me if i give it any throttle. The bike will idle fine but cuts out if I give it any gas. When I let it Idle for 1 minute it will work fine for another few minutes then the same problem happens.
      I have adjusted the carburetor many times to see if it was because its too lean or rich but the problem happens either way. I am running 40:1 fuel mixture. I recently replaced the head gasket and I noticed the piston needs replacing as its very worn, could this be the problem?
      Any advice/help would be greatly appreciated!
    • By Brady The Honda Guy
      So I can get a 1986 cr250 motor for a good price and I also know a guy that has a 2005 crf250r that needs work. I have the idea of just swapping motors. Would this motor fit in the newer frame?