Quantcast
Jump to content

  • Do you own an ATV? Join our Forum!

    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.

bobski

2007 Arctic Cat 650 H1 - Carb Problems

Recommended Posts

2007 650 H1 with dynojet jet kit. I changed pilot jet to a 42. Now when I let off the throttle it does not return to idle. It takes a noticable amount of time.

Share this post


Link to post
Share on other sites


Thanks for your intrest. I did the muffler mod I read in some of the forums. I have 2" snorkels dynatek cdi dynojet jet kit with 42 pilot and 145 main. I put the 42 pilot in when I did the muff mod. Some jetting articles I read said the pilot jet is too small. Have'nt time to mess with it so I was hoping someone had similar problem

Share this post


Link to post
Share on other sites

Did u do the slide mod? Make sure the quad is warmed up also so u know your choke is open. That might help. Also make sure your air filter is clean. If you jet now u will have to rejet in the spring.

Share this post


Link to post
Share on other sites

yeap slide mod. and it does it after its warmed up. It is anoying when riding, you let off and t keeps going.When I get time I will check for leaks and go through carb again. I will read over " jetting 101"

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 Adrian Ciotinga
      Hello,
      I recently picked up an ‘07 KFX 700. All was going well, rode it about 40 miles, when it started bogging at low speeds. If I kept the revs higher, I was just fine. Also, a persistent issue since I picked it up is the fairly difficult start (but it is abnormally cold right now and the quad is jetted for the dunes at summertime).
      Regarding the complete lack of idle, I have to rev it a couple times to get it to idle after starting it, after which it’s 50/50 whether it remains idling. I don’t have low fuel, but all of this began after I rode it pretty hard and the radiator fan kicked in. Might be overheating, just wanted to hear your opinions.
    • By cfauvel
      ok help so according the service manual, Idle Air Mix Screw (aka Pilot screw) should be initially set to 2.5 turns out from fully seated.

      If I do that the motor doesn't want to start or stay running...right now the pilot screw is probably somewhere near 5 turns out....I'll take the carb off tomorrow to count to know for sure.

      mind you the carb got a new float seat,float needle and various other components in the kit.

      To get the motor running I hard to turn the pilot screw out quite a bit, and turned the idle speed screw in quite a bit...I didn't hook up an inductive tach to know what it is idling at, but does sound about right.

      What should the idle speed adjustment screw initially be set at (the one that has the black cable sheath with a knob you can twist easily)?

      Is there a special tool to turn the idle/pilot mix screw whilst the carb is on the running motor? I am using a slotted screw driver bit (normally goes into a driver) by hand..makes it hard to turn the driver and hard to tell how many turns .
    • By Roy Anderson
      I have a 2002 Suzuki LT-F500F, and am a first time atv  owner. I rode two wheel bikes for many years, and now, two months in to being a new at owner, am just not enamored with the thumb throttle, and I’m wondering if anyone has tried a conversion to a typical twist grip throttle as found on all motorcycles? If so, how do you like it?
    • By Bob Hill
      I need a motor but i really dont hsve lots of cash and im on the kenai peninsula. Up here in Alaska i really need help
    • By Scott Sirr
      View File 2007-2012 Yamaha Big Bear 400 4x4 Service Manual
      2007-2012 Yamaha big bear 400 4x4 irs service manual
      YFM40FBW
      Submitter Scott Sirr Submitted 12/22/2019 Category Yamaha ATV  
  • Similar Tagged Content

    • By Ellery Zandt
      I have no idea where the antifreeze line coming off the thermostat goes too. The carb two nipples in the pic create a vacumme. Can someone help me on this please....!!! my email direct is [email protected]!!!!
    • By Ellery Zandt
      Does anyone have a redcat 250 or falcon 250cc that they can share where the two vacuum lines on the carburetor that you run antifreeze through I honestly have no idea where the lines are suppose to go to circulate the antifreeze. 
       
      Any help is greatly appreciated. 
       
    • By Paul Maple
      I have a 1999 Sportsman  500, it was running fine, than started to lose power in the winter, I adjusted the idle screw and away I went, than a few weeks ago it died, I have found that i am flooding the engine, compression was at 70PSI and due to the compression release mech. i assume i am good as it compared to the same PSI on a 2000 sportsman 500 i have. i cannot start the atv unless i go full throttle and it starts an runs for about 30 sec than dies, again it is flooded. i ordered a new carb off ebay as i could get one for around $40. put that in same issue, i have checked the timing, (good), valves out of adjustment i adjusted to .006 still same issue, i have found the exhaust lobe and rocker arm to have some wear, i have ordered new ones, but am looking for any other input in this area as well. would the exhaust cam and rocker arm cause the engine to flood? i have used a bore scope and the piston liner has good cross hatching still? any input would be great.
    • By Tubecatgs
      A friend of mine has this Bayou 220 that started running bad and parked it a few years ago. I foolishly volunteered to take a look at it. I noticed right away the choke plunger on the carb was broken and probably the reason it was running bad but now the old gas was evaporated and like turpentine. Before i even tried to start it, i drained/ thoroughly washed the tank out, new fuel filter, new fuel lines. Blew air through the petcock etc. Changed the oil and filter and air filter and new choke plunger and cable. I disassembled the carb and rebuilt it with a kit. I cleaned the main jet with solvent and poked a wire through it to make sure it is clean.. the engine now fires right up with the choke on and dies when i take the choke off. I adjusted the air/fuel screw to about 1.5 turns out and the idle screw about 2.5 turns out. The rubber boot between the carb and head does not have any cracks in it so I don't think it is leaking air. I originally had the clip on the needle on the second from the top ring... when i moved it all the way to the bottom it starts, runs and idles really fast and will idle eeally high with the choke off but if i adjust the throttle cable and/or idle screw to a slower idle it will sometimes stall but the idle will go up and down every few seconds and when you give it gas there is a hesitation... i tried moving the clip down to rhe second from bottom and same problem... i replaced all the parts in the pic to the top right. However, there appears to be a small o ring, washer and spring left over from the kit... i did not see these get removed..... a) any idea if where these extra parts go and if i need them and b) any other ideas on why i cant get it to idle right or carb adjustment ideas?
      Thanks
    • By bradley nelson
      What is the best and easiest way to tune your carburetor? Any tips or tricks?
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...