20 Most Recent 2003 KTM MXC 450 Questions & Answers

Thank you for contacting FixYa with your inquiry.
The suggested amount is 1.2 L.

You can download the owners/service manual from this site. http://www.ktm.com/450-EXC.72.0.html?&detailview=4&cHash=dcbf8829e1
Just a note:
I have the same bike and 1.2l of oil will NOT register in the sight glass. I can't even see it in the bottom of the glass. SO IGNORE THE GLASS IF THIS HAPPENS AND DO NOT KEEP ADDING OIL TILL YOU SEE IT IN THE SIGHTGLASS. Add 1.2 liter if you are changing the filters, and add 1L if you are keeping the old filters in there.
Let us know if we can be of further service.
Kind regards,
TF

Wait until you get new chain and sprockets to do it.

We use BOLTON MOTORCYCLES & POWER EQUIP P/L 03 5422 2255
they know what you want and need. You should find them very helpful.
Cheers Tony

what noise is it ticking,clicking,metal and metal etc

You don't have a belt, you have a chain. It should be changed when you rebuild the top end of the motor. There is no specific interval since people ride their bikes in different manners. Racing application would be changed much sooner than just driving around the farmhouse.

he always over-heats his 450. Everytime he pulls off the track he has little to no coolant left. He's tried to mess with the carburator but unfortunatly that is not fixing the problem. I'm not sure if he's tried the water wetter yet, but I know he's been thinking about it. Anybody else have any suggestions on how to keep this 450 cooled down while riding? It's gotta be a pain in the ass to fill the radiators with coolant everytime you pull off the track,Adjusting the carb will not solve the problem. It has to be leaking out someplace obviously. Could be a head gasket, could be a bad thermostat or it could be leaking. How hard is he riding it. Also maybe he should try flushing his system out good and trying Engine Ice. Also he could try leaving the Rad cap on the setting where it is slightly off to help release pressure.,,,

ProClean is good stuff but not worth the money. The only reason I had it was because I won a create of it at our clubs Supercross race it's too expensive in my opinion. I buy 40 litre containers of stuff called TFR which stands for Traffic Film Remover, it basically is a detergent like ProClean, Simple Green and all the others, only it costs a fraction of the price and isn't deluted. This means you can delute it to your own strength for different causes. You can see it removing dirt as you watch, like someone said above. You can not use it pure on the bike however, it will make alloy parts go dull - as my buddy found out lol. ,,,

Put it up on your stand lossen the axel and remove the bolt on the bottom of the shock. Then tighten your chain and lift your swingarm up until its horizontal with the ground, then the chain should have almost no play. Not completely tight, but almost no play. Tighten the axel, and the bolt on the shock, and your set,,,

Peaking out at 54.3 horsepower is the 2008 KTM 450SXF on the dyno. It is the most powerful 450 motocross bike on the showroom floors.

no problems all good news so im looking into one but not sure what to get a 250 or 450 ive riden Both in a honda and kawi but none of the KTM's yet.. so yea any ome got any advice..gonna be riden in the winter 2 oncei get some studed tires so yea but yea thanksDefinitely try and ride a couple. I rode the 525SX and a 200SX a couple years ago and they were a blast. They do tend to have that Euro handling which is a little different than the Japanese bikes, but you'll get used to it rather quickly. The 525 I rode was slimmer than my YZ, which made it a little difficult for me to grip, but I think they've changed the geometry of the bikes a little bit over the years, and I hear they've gotten most of the suspension bugs fixed. Definitely try and ride some and see what you think.,,,

That would be like riding a fixed wheel bike.Think about how you will stop and start. Only hydraulic fluid will leak. Bad idea!

Question edited for clarity. That sounds like it is just a bad connection somewhere or possibly a bad switch. Remove the battery leads and clean the lead contacts and battery posts with a wire brush. Smear with Vaseline and reconnect. Remove the starter leads and do the same. Then it could be the Starter Relay https://www.google.com/search?q=ktm+450+sx-f+starter+relay+location Or Starter Button https://www.google.com/search?q=ktm+450+sx-f+starter+button+replacement ..

personnaly I would replace cylinder with new OEM

All dirt bikes have a VIN. It is on the steering neck. https://www.google.com/search?q=vin+on+my+ktm+300 ..

Have you checked battery connections. Run switch in the correct position? Checked spark plug for debris? Just thinking out loud..

Drain oil. Use degreaser to clean area. Use JB Weld & allow to set up properly before adding oil.

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Hi, try to see this link and looking for the manual that you need. https://www.pdfmotomanual.com/manuales/ktm/eng I hope to give you an help. Luca

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Hi, most likely your cdi unit or ignition coil needs replacing.