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 get higher and then it dies. Have cleans carb in ultrasonic cleaner, changed the fuel and this still doesn't change the problem. This is how i purchased the bike so i don't know it somebody has player with something. Also the bike has plugs for a display. Do the ktm exc 525 2004 come from factory with a display? Thanks in advance.

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.

SOURCE: My KTM 250 EXC has been sitting all winter. Now it

???? check oil and try to choke with hand and clean carb

SOURCE: maintenance for KTM EXC-F 250 2008

This is a case of rtf.
Read the F____ manual...
just teasin ya...

SOURCE: '09 KTM 530 EXC-R HEADSHAKE

I would recommend getting the front tire balanced. Get the front wheel off of the ground and spin it to see how "out of round" it is.I know the tires on these are DOT approved, but they are not a comfortable ride at highway speeds. Head shake is usually caused when the front end gets light. (My Husaberg does it bad at 90mph) You can play a little with the suspension, or even move the forks up a little in the triple clamps, or the enevitable, get a stabilizer.

SOURCE: KTM EXC 250F - Battery now holding its charge

is the battery charging by engine