Thread: (SOS) XP 800 carbs
06-19-2008, 06:44 PM #1
(SOS) XP 800 carbs
Has anybody rebuilt these carbs and noticed if the low speeds are closed completly?The shop manual says 1 turn out and it's not running right at that setting.I didn't count how many turns out when I rebuilt them.Sorry for the multiple posts on this topic.
06-19-2008, 08:55 PM #2
Ski wont run with low speed screws closed.
1 1/4 for lows
closed for highs.
06-19-2008, 09:01 PM #3
How is it running exactly? How would you describe the way it is idling? If it's too rich it will idle low and a bit rough, if it's too lean you will have to keep tagging the throttle for it to stay running. I checked the book to make sure and you are right, one turn out on the low. When you rebuilt the carbs, did you make sure the needle valve lifter was level with the inner body of the carb? My machine wasn't running very well when I first bought it and that was the reason...the needle valve was being held open for too long from the tab being raised too high.
06-19-2008, 09:28 PM #4
06-19-2008, 10:26 PM #5
Factory service manual. I have my ski set to the factory spec too and it runs really well.
06-20-2008, 08:00 AM #6
06-20-2008, 09:02 AM #7
06-20-2008, 12:02 PM #8
I must Have a problem with the pilot jet would it hurt to bump up 1 jet size from stock?And what size is stock?Thanks
06-20-2008, 12:24 PM #9
142.5 and 70 are stock sizes.
But, you have no reason to change it if the ski is stock. Those carbs should work just fine from sea level to a couple thousand feet
You have another problem you should try to find if its running poorly
06-20-2008, 12:43 PM #10
The only thing I could pssibly think of is some kind of restriction inside the low speed circuit. When I rebuilt them I used carb cleaner with compressed air...anyway I've ran the ski, once you feather the throttle a little it will go fine if it doesnt stall. Checked the plugs on high speed run and the are both consistant.I did notice last night when I had it on the hose. If I cover the air inlet on carb cover with my hand to restrict the air flow a little it will rev up fine.This thing has me stumped
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