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Old 03-04-2010, 11:35 PM   #1
never.ride OP
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KTM RFS 450 EXC Jetting/Carb Help!

Hi guys. I'm new to the whole carb thing after only having an FI BMW 800GS (I grew up on pedal bikes). I just picked up an '05 450 EXC that only has 22 hours on it. So, it obviously hasn't seen much use and it is running a bit rough. I've been told the needle may be a bit clogged up and the carb may need a general cleaning as it sat in a dusty place for awhile.

So, can you guys point me to some links as to how to get to the needle and/or cleaning the unit. Thanks in advance!!
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Old 03-05-2010, 12:05 AM   #2
GR0NK
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If the carb has the stock needle and jets, I would suggest getting a JD jetting kit. Clean carb, install JD parts, ride.


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Old 03-05-2010, 10:34 AM   #3
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Quote:
Originally Posted by GR0NK
If the carb has the stock needle and jets, I would suggest getting a JD jetting kit. Clean carb, install JD parts, ride.


Sean
+1 on the JD jet kit. Really woke my 450 up .
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Old 03-05-2010, 11:37 AM   #4
Blinkerfluid
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Yea the JD kits are nice and easy.. Also go check out www.ktmtalk.com.. they have an entire section dedicated to jetting.. If the bike is running, just rough, you could try running a can of seafoam through it and see if that clears it up.
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Old 03-05-2010, 12:21 PM   #5
mt21
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Hi, anyone have a link with pics,to show how to do all this?, install JD kit, cleaning carb. etc.
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Old 03-06-2010, 06:48 AM   #6
barbwire44
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MT, if you buy a JD kit it will come with instructions, and pictures. You say runs a bit rough, that could be a lean condition, which pretty much points to factory jetting, or could be a rich condition, could be valves out of adjustment, although most of the KTMs tell/tale of needing a valve adjustment is hard starting, or could be bad gasoline, to low of octane, old gas etc..... I would find someone close to you to give a second opinion on what is going on before throwing money at problems we guess about on a message board, could be a simple as a turn of the fuel screw.
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Old 03-06-2010, 09:26 AM   #7
jgreer
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Quote:
Originally Posted by mt21
Hi, anyone have a link with pics,to show how to do all this?, install JD kit, cleaning carb. etc.
The JD jet kit come with a complete instruction manual with pictures. It's very easy to install.
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Old 03-06-2010, 09:49 AM   #8
tobys
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It was the single best upgrade I did for my 530. I'm a firm believer in JD.
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Old 03-14-2010, 02:36 PM   #9
never.ride OP
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Hey guys. Got the kit installed and dialed in for the altitude here in Boulder, did a valve adjust, oil change and air filter and she is running sweet!
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Old 03-14-2010, 05:11 PM   #10
GR0NK
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Quote:
Originally Posted by never.ride
Hey guys. Got the kit installed and dialed in for the altitude here in Boulder, did a valve adjust, oil change and air filter and she is running sweet!
Right awn bud.


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