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Look how far back the spectators have to stand! Boring only in America.

Did you have time drain the oil before you took the screw out to check top dead center plz

Thank you for posting ! Is the tps setting the same for 2015 ktm 450sx? Same issue. Made me so mad i went bought a yamaha.

So fucking helpful, thanks man, you made my life better

Oh, great idea! Thanks!

thank you very much, its was so easy now to find the top end. i have a hole in my crank that was not the top end.

You put your lock washer on in wrong order. It will damage your shift lever installing it that way. Large washer needs to contact shift lever. Good luck.

Thank you very much for the video! For future reference, a little squirt of Windex on the boot makes it slide on and off much easier. :)

They should make Cams as well for the Katos that don’t have pressed on lobes , WTF .. not single billet like the rest of the world , , amazing cost cutting on a already overpriced bike.

I had a 701 from new in 2018 and I can honestly say the stock cam chain tensioner is the worst in the whole history of motorcycle cam chain tensioners. Within 300 miles from new the bike on nearly all hot starts would rattle its nuts off for up to 20 seconds whilst the tensioner pumped up, cold starts were better but still noisy and I've been led to believe until the tensioner has fully working oil pressure the head is being starved of oil. A Dirt Tricks tensioner sorted that problem out but why can't KTM do it from the factory just the same as the ever failing clutch slave cylinder from the factory. Now the cam debacle with the 790/890's, guaranteed i will never recommend or by another KTM.

What size Knarly do you reccomend for the rear?

Flame out has alot to do with the de comp lever on the exhaust cam also. Adjust the spring and it will fix it

Man all that dust really forces the later drivers to slow down. Must be nice to go first

Hi I have ktm sxf 250cc 2012 kick start only can I plug pigtail in and use multimeter just same way u have my bike only starts for 10seconds then dies can u help me plz

2021 exc-f never really had flame out problems. I did switch to 13 tooth. Makes it a lot nicer for single track. I set my idle at 2200 rpm with a tusk tach. Running a get ecm and a graves slip on. This bike ran real lean stock. The throttle was very twitchy a slow crawl. Very annoying actually. With all the mods I’m a lot happier now. Has good grunt.

Crankcase breather, enlargement, flow to twin breather tiny breather on cct side

you are lucky it didnt jump a tooth and blow your engine...

Thank you so much!! very frustrating trying to find this information. Your video had me back and going in 5 minutes. Thank you again. Very clear and cleared up all my confusion.

I’m in PA and ride FRO, just got a Knarly to try. Which direction do you recommend to put it on ?

Dude, thanks so much for sharing this information. Best video by far. Exactly the info i needed. Cheers from the UK.

Just the help I needed! Thank you!

Wouldn’t it make more sense to see what the base setting is without idle adjustment and then set idle? Everyone’s numbers will be different since everyone’s idle screw is in a different position. Thoughts?

The missing details explained in simple english. I could not figure out this cam tensioner. Very helpful!

I've done other top ends, this info was extremely helpful. And I would not of finished this without the cam chain tensioner video. I have a 2015 350 sxf.

But you have no spark arrestor, and that can cause a forest fire. My buddies and I were on a ride years ago and one of our bikes cause a fire, but our last guy quickly put it out. Good video though

is it possible to reapir the ktm's failed tensioner or I have to buy a new one?

i followed the instruction, the sounds of the tming chain goes away after 3secs but before i opened it up to adjust the valves it was never doing that sound on start up? does it requires a few hours of riding for the tensioner to fill up with oil to keep tension while the engine is not running? thanks

My 501 is the same deal. The new end cap and tuner helps. I usually notice the flame outs when I blip and chop the throttle . I haven’t raised the idle yet. I don’t want to loose top speed and figure and have enough power if have to slip the clutch I can

Which of those two lines do you slide the bolt into? The one on the left or the right?

I have a 2022 ktm 350sxf doing the same thing.

What year is your 350?

Great idea. Thanks.

Opening the clutch and exhaust with a bike that dirty 😂

You fell before the hill!!!

I still got flameout with a $1600 procircuit pipe don’t waste your money

Thank you man for sharing

Excellent!

best video on the internet on how to do this

Was your bike at top dead centre to do this? Or I have a 2016 250 xcf was wondering if I have to be at top dead centre to remove/change the tensioner

YUP.. but for USD fork need to make it to two pieces

What size adapter is that where it’s threaded on pvc? I picked up a 2 inch pipe with this adaptor but that threaded part is too big. Maybe it’s a 2inch where the pipe and adaptor connects then becomes 1 1/2 by the threaded male part

What's that dash you got on there?

Another good tip: use a vise to compress the tensioning device - so much easier.

Thanks for the info. I got a 2023 and I don't have flame-out issues with it. It is a new engine in 2023.

Flame out is due to not using clutch effectively. I added a Rekluse to my KTM 350 XCF and it has not flamed out in the last 3 years. I understand some people are not Rekluse fans (personally I will never ride a 4S without one), but it proves you just have to be super active with clutch and revs to prevent flame out.

Wow I should spec my car out and race this. Even the fast pace doesn’t look much faster than I hit these roads while in Mexico 😂

Thanks a million! Like others have said, the workshop manual sucks. Last time I adjusted the valves the chain skipped a tooth. Really anxious about doing the top end until I found this. Thanks

The way you fix that is buy a 2 stroke

So which one of the Mods worked? the exhaust all alone or a combination?

Great breakdown bud. I just did a Hare Scramble down in Florida on a FC250 and experienced a tad bit of flameout trying to “lug” just a little in the tighter sections and bought a 9oz clutch weight. Still haven’t tried it out but the individual I bought it from didn’t mention anything about a ECU re-flash. Was the weight really that bad?