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Mechanics 101 Can't get it to run right? Find a trick to add HP?
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Old 02-17-2009, 02:12 PM   #1
cleankat96
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Default Air fuel screws-again

I have a 1996 600 kat and i wanted to know if the air fuel mixture screws are all supposed to be in the same position- meaning the actual notch where the screwdriver goes, it seems that 3 line up and the fourth(number 2 i think) is off by a little bit, does this matter? thanks
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Old 02-17-2009, 02:22 PM   #2
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not even a little, as long as they are the same amount of tuns out.
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Old 02-17-2009, 02:25 PM   #3
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The notch position doesn't matter. it's actually the number of turns that it is unscrewed from the stop positon(all the way in till stop) that matter. For example my kat 750 97' is recommended by suzuki to be 1 5/8 turn out from stop. For you're bike im not sure, do a little search with the search engine I saw this info many time.
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Old 02-17-2009, 02:27 PM   #4
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Quote:
Originally Posted by hugoBOSS View Post
The notch position doesn't matter. it's actually the number of turns that it is unscrewed from the stop positon(all the way in till stop) that matter. For example my kat 750 97' is recommended by suzuki to be 1 5/8 turn out from stop. For you're bike im not sure, do a little search with the search engine I saw this info many time.
its 2.5 turns out i just wasnt sure about the position- thanks
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Old 02-17-2009, 02:30 PM   #5
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Quote:
Originally Posted by hugoBOSS View Post
For example my kat 750 97' is recommended by suzuki to be 1 5/8 turn out from stop.
yeah, that's not right bro. If your gonna go to all the trouble to remove the EPA caps, why would you put them were Suzuki recommends, which is WAY lean. It's 2.5 turns out bro.
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Old 02-17-2009, 02:37 PM   #6
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Thank for the tip, but actually since my bike run fairly well and this is just the mixture adjustement for the pilot circuit, I dont really care about my 0 to 1/4 throttle postion performance. Anyway, gotta clean those s*ckers by the end of winter, one pilot circuit seem clogged and only sucking gas so I'll check the pilot screw at the same time. Isn't 2.5 turn the setting for jetted carb to compensate the lack of fuel at 0-1/4 throttle and when decelerating to prevent back-fire?

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Old 02-17-2009, 02:42 PM   #7
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2.5 for stock, 2.75 to eliminate decel popping with an aftermarket slipon
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but personaly I dont see a point in a 1000 you can get the same power from a properly tuned 600 with less weight and better handeling.
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Old 02-17-2009, 02:54 PM   #8
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Quote:
Originally Posted by hugoBOSS View Post
Thank for the tip, but actually since my bike run fairly well and this is just the mixture adjustement for the pilot circuit, I dont really care about my 0 to 1/4 throttle postion performance. Anyway, gotta clean those s*ckers by the end of winter, one pilot circuit seem clogged and only sucking gas so I'll check the pilot screw at the same time. Isn't 2.5 turn the setting for jetted carb to compensate the lack of fuel at 0-1/4 throttle and when decelerating to prevent back-fire?
The pilot circuit affects all rpm and throttle positions.

It may be a small amount but none the less it does change things.

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Old 02-17-2009, 03:01 PM   #9
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2.5 for stock, 2.75 to eliminate decel popping with an aftermarket slipon
Or any mod. increasing the airflow and/or velocity.
I actually don't know were you take those spec of 2.5 stock since its written thats its supposed to be 1 5/8 for a pre98. Is that where they were when one of you checked them after removing the epa plugs or what? Cuz as I said and as far as what I know of those bst36ss's, the screw is modifying the pilot circuit mixture and is only active during idling and up to 1/4 of throttle. Isn't supposed to improve anything while twisting the throttle. If so, YES!! I will back them during the clean-up

If someone can answer me I would feel less dumb when I go to sleep tonight HaHa
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Old 02-17-2009, 03:04 PM   #10
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No, they came from the factory ridiculously lean so that Suzuki could pass emissions tests. Trust us, 2.5 turns out for a stock engine is where they should be set at.
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