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Discussion Starter #1
I am trying to gather clear information from KTM on the common problem of oil leaking from the power valve cover. I am aware of 3 new 2020 300 tpi bikes doing this. Mine has (at least for now) been fixed by my dealer. Another friend of a friend fixed his own (long distance purchase) by isolating the problem to the following parts inside the power valve cover. He removed the one piece 2020 part which had a poor seal and replaced with the 3 piece 2019 parts which sealed better and solved the leak:
SEALING CARRIER 07Part #131307001627Mfg. #54837091100
SEALING ELEMENT BOTTOMPart #131307001420Mfg. #54637107000
Anyone want to shed some light on this?
Sounds like a simple fix that will eventually lead to a recall.
 

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Discussion Starter #3
The problem is fixed for now by my ktm dealer but not exactly sure what they fixed. My more technical distant friend who had the same issue and he worked through a solution on his own. He claims the issue is with the sealing element under the power valve cover. Very easy fix and inexpensive. Apparently the 2020 motor went to a one piece seal replacing the 3 component 2019 and it is too loose. You just need to buy the following parts for the 2019:
Sealing carrier 07
part #131307001627
mfg. #54837091100
and
Sealing element bottom
part #131307001420
mfg. #54637107000
These fit way more snug and it fixes the problem. You may also want to get a new power valve cover gasket. Overall, less than a $20 fix. It's a real bummer KTM/Husky isn't sharing info on this known problem.
 

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Apparently on the 2020 models it’s just one piece but the 19’s it was 3 piece? I ordered all 3 pieces but I’m also going to try some grey rtv
 

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Apparently on the 2020 models it’s just one piece but the 19’s it was 3 piece? I ordered all 3 pieces but I’m also going to try some grey rtv
I seem to be having a similar issue. Im curious if buying the 3 piece kit helped with your leak? Bike runs fine but only has 23 hours on it.
 

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My 2020 300 xc w starting leaking at 9 hours, and still is leaking. Found this thread while searching for a solution.
Thanks for posting the fix. It's saturday evening here, does anyone have a temporary fix for the oil leak?
 

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Had my 2020 xc w in the shop for a week for oil leak repair. Supposedly, the shop received the wrong part, so the shop put my bike back together so I could ride it while waiting on the correct part. At 20 hours the oil leak has gotten worse. I'll return the bike to the shop this week and hopefully, the oil leak is fixed.
 

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Had my 2020 xc w in the shop for a week for oil leak repair. Supposedly, the shop received the wrong part, so the shop put my bike back together so I could ride it while waiting on the correct part. At 20 hours the oil leak has gotten worse. I'll return the bike to the shop this week and hopefully, the oil leak is fixed.
What did the fix exactly?
 

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My bike is back in the shop. According to the service manager, they received the new part number for the redesigned SEALING ELEMENT. The part is on order and hopefully, it fixes the oil leak.
 

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My bike is back in the shop. According to the service manager, they received the new part number for the redesigned SEALING ELEMENT. The part is on order and hopefully, it fixes the oil leak.
Do you know what the part is, my dealer has had my bike for 3 weeks and it hasn’t even been looked at I am picking it up tomorrow to do the repair myself
 

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It's a newly designed Seal carrier for 2020. The older part will not work. My dealer had to get the new part number from KTM so they could order it. I am picking my bike tomorrow so I will try to get the part number and post it here. I've ridden my 2020 xc w 20 hours with an oil leak that does not hurt the bike but it does get messy.
 

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The dealer received the parts but has not fixed my bike because I picked up my bike today since to ride this weekend.
According to the dealer, this is the new part number for the Sealing Element 5537091000. Taking my bike to the dealer on Tuesday for the new part to be installed. Will post an update once I get my bike back.
 

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The dealer received the parts but has not fixed my bike because I picked up my bike today since to ride this weekend.
According to the dealer, this is the new part number for the Sealing Element 5537091000. Taking my bike to the dealer on Tuesday for the new part to be installed. Will post an update once I get my bike back.
It’s pretty crazy all this new 2020 bikes have problems straight off the line, please keep me updated I’m picking my bike up today and going to have them order this part you listed and install it myself.
 

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2020 ktm exc300 six days here and had bad oil leak from power valve since brand new. Dealers in Finland DO NOT know sh1t about fixing this other than doing these poor man fixes with all kind of stupid silicone masses ... I know it is that seal at power valve cover. I am not putting any sealant masses on it because these are poor *** fixes for 10 000€++ bike. I know SEVERAL finnish enduro riders with 2020 250&300 exc with same problem.

This is massive problem with 2020 two stroke enduro ktms.
 

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2020 ktm exc300 six days here and had bad oil leak from power valve since brand new. Dealers in Finland DO NOT know sh1t about fixing this other than doing these poor man fixes with all kind of stupid silicone masses ... I know it is that seal at power valve cover. I am not putting any sealant masses on it because these are poor *** fixes for 10 000€++ bike. I know SEVERAL finnish enduro riders with 2020 250&300 exc with same problem.

This is massive problem with 2020 two stroke enduro ktms.
This is the newly designed KTM part that fixes the oil leak Sealing Element PN 5537091000
 
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