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low-speed air mixture screw (Read 153 times)

el Dude

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low-speed air mixture screw
05/26/13 at 07:09:08

I did the white spacer mods on my 2001 Savage back in '06 and it had been running great. I started having problems after the bike sat for almost a year, so I decided to do a carb overhaul. However, I buggered up the low speed mixture screw. I seemed to seize up, and my continued efforts resulted in a stripped slot.
My question: Can the screw be drilled out or something?
I sure would appreciate any help you can offer.
El Dude

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oldNslow Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 2683 Rochester, NY Gender:	Re: low-speed air mixture screw Reply #1 - 05/26/13 at 10:11:16 This might help. Good luck. http://suzukisavage.com/cgi-bin/YaBB.pl?num=1350749896
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el Dude YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 7 Deep South Texas	Re: low-speed air mixture screw Reply #2 - 05/27/13 at 06:48:16 Thanks, oldNslow! This is great information. I'll be at the parts store buying the items I need ASAP.
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oldNslow

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Re: low-speed air mixture screw
Reply #3 - 05/27/13 at 11:28:32

You're welcome. Couple of other bits of advice - make sure you have a nice bright light shining on the screw so you can see what you're doing. Take your time and make sure you get the hole drilled dead center in the head of the screw. Getting the hole drilled straight and centered is the most important part of the whole procedure.

Let us know how you make out.

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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: low-speed air mixture screw Reply #4 - 05/28/13 at 09:38:18 & close it, ever so gently, counting the turns IN, so you can always get back to square one. Thats soft brass, so, if you close it & snug it, you messed up, fingertips on a small driver, only,
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el Dude

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Re: low-speed air mixture screw
Reply #5 - 05/28/13 at 10:12:21

You guys gave me the confidence to to this. I followed the advice from the above link and DUDE, the air screw is out. It was not that stuck, but the buggered-up slot was useless.
I cleaned up the screw and made sure that the #10 Tork made a good fit so that now I can use a Tork T-handle to adjust the air mixture instead of a standard slotted screwdriver.
Tomorrow I will get some fresh gasoline and give it a shot.
P.S. What's the maximum # turns out before having to change jets? I do have the Hartman mods on my muffler.
Thanks to all of you.

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Dave

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Re: low-speed air mixture screw
Reply #6 - 05/28/13 at 10:43:02

When the scew is turned out 3 turns......the tapered portion of the needle no longer has any effect on limiting flow and additonal turns will not make any difference. The Mikuni manual suggests that the iideal pilot jet will result in the screw being turned out 1.5 turns at the best idle mixture .....but I am happpy as long as it is less than 2.

Someday I will be old......But not today!

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el Dude YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 7 Deep South Texas	Re: low-speed air mixture screw Reply #7 - 05/29/13 at 15:30:46 Got the bike running, and it is running sweet. I'm at 2 1/2 turns out on the air mix screw. Should I consider a jet change? Also, which jet to change, the main or pilot jet? Thanks for the help.
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apache snow-FSO Serious Thumper Offline Posts: 509 Gender:	Re: low-speed air mixture screw Reply #8 - 05/29/13 at 15:35:26 You will be OK at 2.5 turns. I am running at 2.75 turns with no problem. And the jet you would change would be the pilot jet.
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el Dude YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 7 Deep South Texas	Re: low-speed air mixture screw Reply #9 - 05/30/13 at 06:02:41 Appreciate your comment. Thanks for the help. This morning I'm heading out to get my inspection stamp, I'm in Texas, and then it's off to a ride.
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