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Ktm 520 exc. Bike idles fine. But from about 1/4 -3/4 throdle it is really lurchy and jumpy but when opened up fully it runs fine. Ive tried cleaning out the carby but still doing it

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Hi, When you cleaned out the carbs. Did you clean out the idle jets.
Try that and see if there is a change. My guess they are partly clogged with debree. Hope that helps.

Posted on Nov 28, 2014

  • Daniel Mollenhauer Dec 03, 2014

    yes ive throughly cleaned all the jets but hasnt hellped. could it be the mixture?

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: how to fill the front suspension on a ktm exc 2001

If you get the sevice manual or contact a dealer to get the correct oil amount for your bike, they need to know the model and year, you have to have the forks off the bike. take the fork caps off, take the springs out compress the upper fork tube all the way and add the specified oil. if they also give you the measured amount from the top that's the best way to get both fork oil levels exact. there is a special tool that you set the oil level in millimeters and it sucks out the oil to the right level, but before you do that step after adding the oil always pull and push on the cartage rod several times to remove air from the cartage tube. you will hear the air coming out and you will feel the changes in the cartage rod as the cartage tube fills up with oil and the air is removed.
something i'm confussed on though is if you replaced a seal you would have had to brake down the fork to replace it. you would have poored the oil into a container, cleaned all the internal parts,and used a fork seal driver to install the new seal. part of your question asks where do i put the oil in? thats in the open end of the fork after you have taken off the fork cap. It sounds to me like you only replaced the dust seal on one fork. that is not going to fix your leaking fork. you need to replace the oil seal thats pressed inside of the top fork tube.

Posted on Dec 26, 2008

  • 9 Answers

SOURCE: Common Problems on a 01 KTM 520

Dont open the throttle fully you will die...
If it stays on the track with now falls, NO problems , It's a KTM

Posted on Mar 12, 2009

  • 86 Answers

SOURCE: 2005 ktm 520 won't idle, cleaned carb new diaphram

did you try adjusting the air fuel mix screw?

Posted on May 21, 2009

  • 2 Answers

SOURCE: My KTM lc4 640 running problems

Check your valves. they might be tight. possible shimming required there to get them back to spec

Posted on Jul 01, 2009

  • 10 Answers

SOURCE: Service manaul

Try this site I came across

http://sites.google.com/site/motorcyclemanualstore/

Posted on Aug 09, 2009

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1 Answer

How do i lower the throttle pin on 2001 ktm 300 exc


if you need you bike jetted for 7000, take it to a shop and have it jetted.
If you dont understand your carburetor and make the wrong adjustment you can lean out and blow up the engine.
when you jet a bike for 7000, you need to change everything, main jet, idle jet, idle mixture, idle, and needle position.

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I have a ktm EXC 525 2004 and it will backfire when i trying to rev it, i can start the engine and it runs rough at idle then when i try to rev the engine the it backfires and runs really rough as the rev...


Hi, Nicholas and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a "LOAD" test "WARNING" you can have 12.5 volts or better but little or zero amps and the battery must be replaced.
2. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
3. Faulty main circuit breaker and or connections.
4. Faulty ignition coil and or connections.
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6. Faulty spark plug cables, leaking or broken, internal damage check for spark leakage in the dark.
7. Faulty ignition module, switch, CKP, MAP, CMP, sensor and or any connector in the ignition circuit could have corroded, loose, or broken pins/sockets
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For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
http://www.dirtbikeworld.net/forum/archive/index.php/t-18883.html
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KTM EXC Repair Manual
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How much oil does a 520 sx take


Thank you for contacting FixYa with your inquiry.
The KTM factory suggested Oil is 1200cc of 10W-40.
http://dirtbike.off-road.com/dirtbike/review/ultraserious-racing-four-strokes-ktm-520-sx-520-exc-400-sx-and-400-exc-20704.html
If we can be of further service please let us know.
Best regards,
TF

Jul 16, 2011 | 2001 KTM SX 520 Racing

1 Answer

2005 ktm 520 won't idle, cleaned carb new diaphram


did you try adjusting the air fuel mix screw?

May 21, 2009 | 2001 KTM Exc-Racing E 520

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Dead battery KTM EXC 520


check the valve clearances.

Apr 11, 2009 | 2001 KTM Exc-Racing E 520

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Common Problems on a 01 KTM 520


Dont open the throttle fully you will die...
If it stays on the track with now falls, NO problems , It's a KTM

Mar 10, 2009 | 2001 KTM MXC 520 Racing

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Parts


Hi there over the ditch. EBAY rocks for most bits you lookin for. Motard wheels check out your KTM dealers oz wide as they were giving away Motard wheels with new 530 last year an some might still have stock. I am just in process of fitting Motard Kit I got from local dealer you will need to get a Digital speedo from a later model EXC as the 2000 520 has an analog an won't fit with Motard Wheels.

GO KTM POWER

Feb 08, 2009 | 2001 KTM Exc-Racing E 520

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Model types


which one would be the best?First of all there is no sxc it's sx exc mxc. The difference in the sx and exc is the sx is strickly a mottocross bike. It is not geared or setup suspension wise to ride in the woods. It is much more radical than an exc which is designed specifically for woods riding.,,,

Nov 10, 2008 | 2001 KTM Exc-Racing E 520

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