2007 KTM 125 EXC cuts out when warm

SOURCE: 1995 KTM 250-EXC Buring Oil

g'day Murray! Could actually be a couple of things.I'll try to eliminate them by degree of difficulty and cost. first up make sure your carb jetting is correct and nothing has come loose inside the carby to cause an overly rich mixture.Is your air filter in good condition ??.Lets presume you've kept up a good maintainance regime on ya beast.Next i would check your radiator levels to make sure the tank levels are not dropping as this will indicate leaking fluid possibly via a head gasket leak into the combustion chamber , then i'd go for the right hand crank seal,especially if your gearbox oil level is low , thats the rather large seal behind the drive gear on the end of the crankshaft on the clutch side(right side sitting on bike).You'll have to remove the nut,check for an "L"mark indicating left hand thread,remove the gear and spacer and there may be an "O" ring behind the spacer as well,milk it off carefully,prise out the seal with a.....Heh you guessed it....Seal puller,not the type our eskimo friends use...HAHAHAAAA...THEn tap in the new seal with a socket that fit the outer bearing surface of the seal keep it squared,and then.... SSSHHHHMMMOOOOOOSSHHH...YOUR DONE.You really need to access how much work the engine has done,when was the last top end rebuild done etc???.Could be worth while doin the whole lot in one hit if you've got the coin..Oh yeah , here's the part number for the Winderosa seal kit,its: 822326. hope i could help ya out ..MUZZA.Goodluck...regards..Tilleydog

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: ktm 450 exc battery charged but will not turn over

Starter motor check for worn out carbon contacts.Also it's wiring and the starter relay.The regulator/rectifier is charging efficiently the battery?

SOURCE: 1995 KTM 250-EXC Buring Oil

you possibly have a bad seal on your crank. Its called a labyrinth seal and it will be on your clutch side because it is drawing in crankcase oil. the other side would make it run lean by drawing in air by the stator. if it is eating crankcase oil and not leaking it, it is most likely your problem. you can do a leakdown test on it to confirm the problem. put the piston at bottom dead center and compress the cylinder to about 10 pounds of air using a leakdown tester or a compression tester hose that can be used to hook up to an air compressor somehow and hold the pressure, but do not go above that because you could damage those seals with too much pressure. Check to see if the cylinder will hold the pressure for a good amount of time on its own. Check for air coming out of the crank vent hose or the oil fill hole. Also dont overlook the simple things like your premix ratio. try 42:1 or 50:1 ratios of gas to premix oil.