Jump to content
Sign in to follow this  

250sxf bogging

Recommended Posts

Hi, I brought a 250 sxf 2006 and it bogs of idle.

Had top end check 3 rides ago with new con rod etc all from ktm main agent. I have cleaned the carb and put a new stock exhaust on as the last one was all beat up.

The problem is still there. Not ridden it just on the stand it bogs from idle. Start easy tick over ok. After bog it revs fine.

Any ideas welcome

Share this post


Link to post
Share on other sites

Most, if not all, 250f's will bog on the stand. Ride it and see.....

Share this post


Link to post
Share on other sites

thanks for the help.

In another thread you say about moving the 'clip' one place. where is this as I can't see it. all i seem to have on my carb is a black knob / screw on the left side which is joined to the right side by a bit of pipe and this adjust the idle and a silver knob / screw underneath. (seem aftermarket). this is out 2 turns.

there also seems to be an aftermarket part on bottom right corner of carb. this is silver and say OZZO i think.

i messed around with both of these last night and the idle seems to be high after revving bike then it settles.

sorry for all the questions just not a clue when it comes to carbs

thanks

Share this post


Link to post
Share on other sites

OK....The black knob adjusts your idle speed. Clockwise to increase RPM. The silver screw underneath (should be roughly in the centre of the float bowl) is your pilot screw. 2 turns out is about where it should be. Adjust this as follows..http://www.thumpertalk.com/forum/showthread.php?t=976989.

The other part, but i'm not sure without seeing it, sounds like an adjustable leak jet. This is an expensive piece of carb bling and requires careful adjustment. This will play a major factor in eliminating 'the bog'.

The 'clip' refers to the needle inside the carb. This is accessed thru' the carb top (a plate with 'FCR' on it) secured with 2 small allen cap screws. Raising or lowering the needle by moving the clip position is another aspect in carb set-up.

Share this post


Link to post
Share on other sites

thanks again.

I got the carb back off last night, but before i done this i noticed that the jet you can see when the air filter/boot is removed doesn't squirt any fuel when you twist the throttle (bike not running). Is this correct?

Took off the cover of accelarator pump (after market part what say OZZO) where should the spring be? under or ontop of rubber diapham.

Share this post


Link to post
Share on other sites

Well...On any FCR i have ever worked on, the spring sits between the diapragm and the AP cover. You should have a strong AP squirt, even if the motor is not running.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

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

Reply with:

Sign in to follow this  

  • Similar Content

    • By Urbanpoacher
      Hello everyone, I am new to the page and to the world of ktm. I recently purchased a used 2008 ktm xcfw with a 300 big bore kit, not sure who made or installed the kit. I am looking to see if there is any way to buy a new carb that is set up for this bike with the 300 BB. Any help would be great. The fuel inlet is leaking and there are a ton of stripped screws so I’m thinking getting a new carb might be the best way to go but i don’t really have the skill or knowledge to tune and jet a stock one myself. Thank you!
    • By christophe19912
      i am currently checking valve clearance on 2013 sxf 250 with 70 hrs. bike was bought new and never been apart(as far as i know). when setting TDC the notch on the crank when it is aligned to the whole, has the cam gear marks intake totally up and exhaust totally down. are these the wrong marks to look at or am i missing something. bike does run just a little difficult to start.
    • By gyodock
      2016 KTM 350xc-f - Olins Fork Cartridge Inserts, FMF 4.1 RCT Muffler, Pro Circuit Linkage Arm, Torc1 Reaction Shift and Rear Brake Lever, P3 Carbon Pipe Guard, Acerbis Skid Guard, Mobie Linkage Guard, Acerbis Swing-arm Guards, RYD Crew Aluminum Handguards, Sicass Racing Tail Light Kit with Flush Mount LED Rear Turn Signals, Sicass Racing Handguards with Built-in LED Turn Signals, Rental Sprockets, Trail-Tech Stator Upgrade, ktmandhusky.com Fuel Rail and Anti-vibration Bar Ends, Guts Seat Cover, USB Charging Port, Misc Anodized Orange Aluminum Bling. My wife is getting jealous of the attention I am giving my bike!
    • By Dandeliongardens
      Hey all. I’m a newbie here so let me know if  I’m in the wrong place. 
      I’ll get straight down to it. I’m in the market for a new bike and have been thinking about what’s going to be best for me for a long time. Until recently I finally came to the conclusion that a new YZ250FX is my best option. My last bike was 2015 Yz250f which I loved.
      Now just yesterday I saw a local dealer advertise left over 17’ FX350’s for almost the same price as the YZ. What appeals to me about the Husky is that extra grunt. What doesn’t appeal to me is the suspension and handling and the reliability of the machine. Now I’ve never owned a KTM or Husky so I am basing those two factors on word of mouth only. Like I said, I loved my Yz250f and felt very at home on it, it has probably been the best bike I’ve owned to date. Yamaha reliability is also second to none which adds to my peace of mind on purchasing the YZ. One thing I wish it had was more power though. Obviously it’s only a 250f so you can’t expect it to go like a 450 (not really interested in 450s).
      I ride mostly trails and the occasional day at the mx track. The trails I ride are gravel based, loose, rocky, single trail, and also wide, fast, flowing, sand trails which is where I think my yz250f really shined, and where I had the most fun. I’m only a small rider at 145lbs which is why I’ve steered away from 450s. 
      I’ve read a few forums and others have said the ktm and Husky 350s are unbeatable on the trail which is why I am in this dilemma.
      So basically what I’m trying to decide on is if that extra power is worth compromising for the YZ suspension, handling and usability. Feel free to make any other suggestions, including other bikes as I was also considering the YZ250X 2T.
      Thanks guys
       
    • By OffroadMT
      I am purchasing a 2012 KTM 350XCF after wanting one for a year and finally picking one up in December. My question is what are some good things to watch for on this bike as far as initial set up and good Mods to improve bike ? My plan is to add a skid plate, hand guards and muffler with the possibillity of changing the header pipe and a Rekluse EXP would be nice as we ride mostly single track mountain trails with some rocks . Any good thoughts and suggestions would be appretiated
×