Quantcast
Jump to content

  • Join Today, It's Simple and FREE!

    As a member, you can post in our forums, upload your photos and videos, use and contribute to our downloads, create your own member page, add your ATV events, and even start your own ATV club to host your own club forum and gallery.  Registration is fast and you can even login with social network accounts to sync your profiles and content.

gixxerdk

Help a noob! First ATV 2007 Yamaha Big Bear 250 2wd

Recommended Posts

My ATV only starts when in full choke even after I let it warm up and ride around I try to lower the choke but will end up stalling. I just put seafoam in the gas tank and will try that out first in about 15 min. I'm just worried that when it gets cold I'll have issues. Also, when I try to lower the choke after being warmed up I hear no difference in the idle. Is there a way to adjust this?

Side question, when I do stall and im in gear its hard to go back into neutral to start it up again. I tried rocking back and forth but that didnt work. After 3 min it went into neutral smoothly.

Share this post


Link to post
Share on other sites


First Welcome to Quad Crazy.

I would check and make sure you have the airbox lid on properly and there are no leaks from there to the carb. Then check the tank and make sure your fuel filter is not plugged or the bottom of the tank. Sometimes on plastic tanks some of the cut plastic can get in the lines and the jets.

The sea foam is great stuff but you really have to run a tank of gas or so before you start seeing the benifits.

Third I would hold off on adjusting the carb until you tried everything else, if it ran fine before then I would just clean the carb and not adjust it. Check the jets and see if they have anything in them.

For your other question, alot of quads have the start in gear feature, try holding the brake (Make sure the brake light comes on) and starting the quad.

Share this post


Link to post
Share on other sites
First Welcome to Quad Crazy.

I would check and make sure you have the airbox lid on properly and there are no leaks from there to the carb. Then check the tank and make sure your fuel filter is not plugged or the bottom of the tank. Sometimes on plastic tanks some of the cut plastic can get in the lines and the jets.

The sea foam is great stuff but you really have to run a tank of gas or so before you start seeing the benifits.

Third I would hold off on adjusting the carb until you tried everything else, if it ran fine before then I would just clean the carb and not adjust it. Check the jets and see if they have anything in them.

For your other question, alot of quads have the start in gear feature, try holding the brake (Make sure the brake light comes on) and starting the quad.

Thanks for your reply! Ill wait and see if oxidized has a manual for my year and model and ill start breaking her down.

Thanks again!

Share this post


Link to post
Share on other sites




Can the service manual listed earlier in this post be used for my model (Big Bear 2007)? Did the name change over the years but nothing has changed parts wise since 1998

Share this post


Link to post
Share on other sites


had it, in a folder ...

Awesome, thanks. I just joined and found this and the owner's and service manual you posted. I just bought a used '07 Big Bear 250 and was looking for these docs. Do you have the service manual for the 2007 Big Bear 400 4x4? I have the owner manual since I bought it new but it would be great if I had the service manual too.

Thanks again, great info on here.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Similar Topics

    • By Rich1028
      Anyone Ride RED BRIDGE ATV TRAILS?
      https://www.riderplanet-usa.com/atv/trails/info/michigan_03384/ride_79d2.htm
    • By Rich1028
      anyone ride Indian River ATV Trail
      https://www.riderplanet-usa.com/atv/trails/info/michigan_14323/ride_5222.htm
    • By Cj Winds
      I have a 2000 Polaris Xplorer with the 250 two stroke motor
      It does not want to start with the electric start, the motor cranks fast, the battery is good, and there is good spark when cranking. The engine starts perfect when using the pull cord, it even starts if I pull the cord slowly and starts with one pull. The engine idles smoothly once started. My wife says she needs the electric start to work.
       
    • By Dexter-Bernice Luck
      Inviting all CF MOTO owners to join us at CF MOTO WE RIDE  on Facebook. https://www.facebook.com/groups/400047730908167/
      Plan rides, ride with others, just get to know owners in other areas and share riding information.
    • By w_r_e
      Just picked an '03 Bayou 300 2WD.  It runs ok, needs a little help though. Maybe someone can answer some questions for me.
      1. The choke "off" position is the lever all the way right, correct?
      2. The choke seems mechanically... funky. It has a little valve clamp around the rubber boot where it goes into the carb, seems kind of janky, I don't think there's typically a valve clamp on that part? The engine seems like its running really rich, smoking a bit, so I wonder if I can just completely remove the choke cable to see if that's part of the issue? But I don't fully understand the choke needle setup. Is "choked" when the needle is being pushed in, or pulled out? Like it I chopped the cable just outside the rubber boot by the carb, would I be permanently choking it or permanently unchoking it.
      3. I've read that I can tweak the air/fuel screw and maybe fix the rich mix. Where is that even located, and if it's behind a cap that I have to drill out... where is that?
      Thanks for any tips
  • Similar Tagged Content

    • By Derick Joel Smith Trimmings
      Buying a Baja 250 tomorrow for 600 bucks, needs nothing but a wheel bearing, i already know Baja is an off brand crappier. Manufacturer, but does anyone have any tips or knowledge of these bikes? 
    • By fatfarmboy
      Just bought (Tue. evening) an '89 Suzuki 250 4wd that has been sitting out the last 5 yrs. It's complete, including the shift knobs, battery cover, and headlights. It has the optional cooling fan on it (probly stuck - didn't check), and the engine isn't locked up. Plastic looks good and isnt cracked. Racks aren't bent up. Shift lever works, the foot brake moves (needs oil - have to pull it up by hand), and there's black oil and no water in the engine sight glass. Guy was asking $125 and gladly took $100 for it. Anxious to get started on bringing it back to life. Been wanting one of these for years. As soon as I can get to it (working on a junky "Jackel" right now - Chinese Yamaha Timberwolf). I'm going to pull the tank off it and clean it, clean & possibly rebuild carb, put in new plug, and a battery, then see what happens. If nothing, will keep going until it runs. Feel free to respond if you want to, I'm mainly just excited and wanted to tell somebody. 
    • Guest Fox300exchic
      By Guest Fox300exchic
      Indicators that tell you to check your toe-in.
    • By Flanstone
      I just bought two 1985 TRX250's from my father-in-law. One runs great, the other not so much. The one is having issues with the shifter. The shifter seems to be resting lower than normal. When I press the shifter downward, it just pops back up. Any thougjts as to what the issue might be?
    • By Christopher Williams
      Hello all, 
      i just rebuilt the top end of a 99 Bear Tracker 250 and it can’t get it to hit off of gasoline or starter fluid. Occasionally it will backfire. Right now I’m just trying to get it to fire off without the carburetor like I’ve done a thousand times before with other engines. Usually there is no response, but occasionally I get a backfire through the intake. ISeems like it’s out of time, but I don’t see how that could be possible. 
      Here’s what I know:
      1. compression 120psi
      2. all timing marks are lined up after numerous revolutions. 
      3. Strong spark. 
      4. Valves adjusted correctly. 
      Thanks in advance. 
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...