xr600 question


5 replies to this topic
  • vincent1

Posted July 17, 2004 - 10:30 PM

#1

Guys, i've seen a couple of postings telling me to tune the fuel mixture screw with, let's say, 1.5 turns, 2.0, 2.5 etc.
If you go from one tip of a screw driver, what will be ONE TURN, a 180 degree turn, or a 360 degree turn?
thanks guys!

  • XR6's_rule

Posted July 17, 2004 - 11:30 PM

#2

Vincent1- One 360 degree turn = 1 turn. On the XR600 I set it at about 2.5 turns out from seated (screwed in with a stock carburettor).

  • vincent1

Posted July 18, 2004 - 04:40 AM

#3

cheers mate! thanks for the help. :thumbsup:
you might be able to help me with finetuning my xr as well.

Tried a lot to make this piece of ... run perfect. The problem now is that it runs ok, in mid and top range, but i have to let it idle quite high otherwise it just pops and stalls. Got the needle in the middle position, fuel mixture 2.5 turns out a 65s and a 165 jet. Air filter is clean, snorkel removed, it's got the stock exhaust with the exessive welds grinded away from the manifold and i took out the SQUARE piece of metal (the one attached with 2 bolts) in the muffler. Spark plug, heat code 9 from ngk has got an almost white tip. Tried a 170 main jet but then it just pops a lot in the muffler on decelleration. It looked like it had the best power whith a 70/153 with the needle one position higher than the middle. The problem was that when you drive it with 'half throtlle' it started to hesitate after a couple of seconds. If you 'kick' the throttle it picked up perfectly. I'm living in an area near sea level.
is there anybody out there who can help me? :devil:

Can that decompression device be a problem as well? (when idling)

92 engine

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  • JetPilot

Posted July 18, 2004 - 08:05 AM

#4

Hey Vincent,

I have a 93 XR600R and it will idle all day long. No hesitatoin or popping or anything bad. Just strong smooth power any any RPM and power setting. Keep trying, I dont know what my carb settings are or anything, but I can tell you it is possible to get it running so sweet you will love your XR. :thumbsup:

  • Miker

Posted July 18, 2004 - 09:13 AM

#5

Run your needle on the bottom clip position if your plug is white. That is the position that is the richest. I had a 96 XR 600 that I could not get rich enough no matter how rich I went on the pilot or main. Lift the needle all the way up and then jet it.

  • Moredesert

Posted July 18, 2004 - 06:21 PM

#6

Run your needle on the bottom clip position if your plug is white. That is the position that is the richest. I had a 96 XR 600 that I could not get rich enough no matter how rich I went on the pilot or main. Lift the needle all the way up and then jet it.


That sound about right, it does sound lean and I did have the same problem myself. If I remember there are 5 notches on the needle :thumbsup: I would try #4 from the top first.

What gas are up running? You need at least 92 octang per the manual and the bike runs best at around 94-96.





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