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› New Owner, Idle Mixture Screw problems
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New Owner, Idle Mixture Screw problems (Read 162 times)
Genjuro
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New Owner, Idle Mixture Screw problems
05/08/09 at 16:55:29
I need some help!
I just put in a K&N filter and started to adjust the carb, and the worst thing that I could think of happend. The idle mixture screw head striped. Basicly the brass broke of of one side, it might be age its a 1995.
Anyway, anyone have any idea on how to get it out?
And can I get one from my local bike shop?
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Yonuh Adisi FSO
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Re: New Owner, Idle Mixture Screw problems
Reply #1 -
05/08/09 at 18:11:28
Easy out and yes.
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Check out Flight of Destiny
http://www.amazon.com/dp/B00H9130XC
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Genjuro
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Re: New Owner, Idle Mixture Screw problems
Reply #2 -
05/08/09 at 18:22:21
Yep you are right! I went to the web site for my local shop after I read your post and I can buy it online from there site.
SKU: 13269-37410
SCREW, PILOT 3 1/4 1 $6.59
So how do I get it out? I can't get it to turn with the screwdriver.
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verslagen1
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Re: New Owner, Idle Mixture Screw problems
Reply #3 -
05/08/09 at 18:45:22
Get one of them easy out's
either the kind with a pilot drill on one side and a gripper on the other
or the kind you drill a hole and tap in a bit.
a left handed drill would make even more sense.
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Genjuro
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Re: New Owner, Idle Mixture Screw problems
Reply #4 -
05/08/09 at 18:58:14
Looks like I will be going to Harbor freight, they have both an easy out and left hand bits.
Thanks, I hope it comes out with no problems.
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marshall13
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Re: New Owner, Idle Mixture Screw problems
Reply #5 -
05/08/09 at 21:15:00
could try an old quadrajet d-driver.... can be found practically everywhere... for adjusting gm carbs back in the days of cars having such quaint devices... how'd you get it to break?
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Re: New Owner, Idle Mixture Screw problems
Reply #6 -
05/08/09 at 23:17:00
I just tried to turn it. On the first turn half of the head came off. You could tell that who ever owned it before me used a screwdriver that was too small on it (The slot edges where flared out. >-< )
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GrateFuLDad
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Re: New Owner, Idle Mixture Screw problems
Reply #7 -
05/10/09 at 18:30:27
i just installed the lancer rejet kit....
I did not notice until after i had done this and got bike back together that the past owner must have also stripped the head off this adjustment screw...
Does anyone have any more info on this..?
so to replace? if i can get it to turn without using a easy out and left handed drill bit ...
do i turn it counter clock wise out until it comes loose?
now by doing this should i be aware of anything like the needle or anything coming out also? and when putting the new one in do i just turn it back in as one would expect clockwise until gently tight and then back out 1-2 turns?
i looked in my manual but must of looked over the idle/mixture screw...?
thanks
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Hang up that cell phone and let us that Ride LiVE....~!~
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verslagen1
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Re: New Owner, Idle Mixture Screw problems
Reply #8 -
05/10/09 at 18:42:34
GFD, you got it.
Normally, when new, there's a brass plug covering the screw.
So by stripped out, is it noticibly recessed and boogered?
Or is it flush with the casting and smooth with a dimple?
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Re: New Owner, Idle Mixture Screw problems
Reply #9 -
05/11/09 at 05:13:48
thats my carb before i hooked everything back up but you can see the mix screw and how its eat up
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Hang up that cell phone and let us that Ride LiVE....~!~
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doc5446
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Re: New Owner, Idle Mixture Screw problems
Reply #10 -
05/11/09 at 06:18:58
Is this the screw I need to turn if I'm running a little rich? If so, which way do I turn, and how much?
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K&N air filter, stage 1 jet set, SuperTrapp megaphone exhaust, solo seat w/ clothespin springs, stainless seatpan w/ fenderbib.1971 CB front fender and mirror.
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PTRider
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Re: New Owner, Idle Mixture Screw problems
Reply #11 -
05/11/09 at 07:42:35
The idle mixture screw controls the mixture only at very small amounts of throttle opening. Is your engine running rich at small throttle openings, mid throttle, or full throttle? If mid, then you need more height in the jet needle spacer. If full, then you need a smaller main jet.
If the idle mixture screw isn't yet broken but feels hard or rough to turn, a bit of penetrating oil on the threads and work the screw in-out-in-out until it is all the way out for replacement would probably work. WD40 is not good penetrant...B'laster PB or Kroil are great, and Liquid Wrench ain't bad.
Any air filter only makes a difference at maximum airflow. If there is any difference in air flow rates between a clean K&N filter and a clean stock filter, it would only be at full throttle and high rpms. In any other case, the intake system isn't overloaded, and at less than full throttle, the throttle is doing its job of restricting the air flow, anyway. (By the way, the tests I've seen show that the K&N restricts air flow more than stock when each has an equal moderate to heavy amount of dirt in them--keep it clean.) My choice for an air filter?...the $15 stock-type HiFloFiltro available from any non-Suzuki shop.
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marshall13
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Re: New Owner, Idle Mixture Screw problems
Reply #12 -
05/11/09 at 12:44:40
it sounds and looks like the PO that pulled the emission plug not only bumped the screw with the bit, but also used the scew as a foot pad, while he "jack-screwed" the plug out .... take a lesson from this... the sheetmetal screw you drive into the plug only goes in far enough to "bite"... dont thread it in until it's threads begin to pull the plug out... doing that will not only butcher the head of the air screw, but also the air-screw's seat....
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