SuzukiSavage.com - brass idle mixture screw. Help

4carbcorvair Full Member Offline SuzukiSavage.com Rocks! Posts: 175 Maine Gender:	brass idle mixture screw. Help 07/26/09 at 17:39:23 Drilled out the brass plug on my 07. I cannot get the screw to turn, in not getting it to turn, I have totally screwed the mixture screw head up. What do I do now? Take the carb apart? Drill it out? I installed my Harley muffler today and it's popping when I shift, would like to take care of it. Thanks.
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tomtaz1975

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Re: brass idle mixture screw. Help
Reply #1 - 07/26/09 at 18:07:20

I sprayed some penetrating oil in before I tried turning the screw.

Is there any head left to the screw, or is it totally stripped out?
Normally if you did, you can take a small chisel and by tapping it you can then use a flathead screwdriver to remove the screw. Or the same with a sharpened flathead screwdriver. Just don't hit it too hard or you could crack it.

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2001, Yellow, Dunstall Megaphone Long, 155 Main, 55 Pilot, no spacer, K&N Filter.

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4carbcorvair Full Member Offline SuzukiSavage.com Rocks! Posts: 175 Maine Gender:	Re: brass idle mixture screw. Help Reply #2 - 07/26/09 at 18:18:01 Head is trashed. I'll try the chisel/screwdriver trick and see what that does. Hard to believe a bike with 1,600 miles would have issues like this. :shrug:
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tomtaz1975 YaBB Newbies Offline Let's Ride! Posts: 34 Milwaukee, WI Gender:	Re: brass idle mixture screw. Help Reply #3 - 07/26/09 at 19:32:26 Just take it really slow...all you are trying to do is make a dent so the screwdriver can get in the groove. I would also make sure you clean out all of the grit/scrap from drilling out the plug, and of course whatever is left from the head. Good luck...that is one screw you don't want messed up...
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28890 L.A. California Gender:	Re: brass idle mixture screw. Help Reply #4 - 07/26/09 at 19:42:05 If it were me, I'd take a 1/16" drill and carefully redo the slot. Then take a dremil with a small rotary rasp and smooth out the slot. But a couple of shallow holes could make it easier to tap in a screwdriver too.
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voldigicam Senior Member Offline SuzukiSavage.com Rocks! Posts: 327	Re: brass idle mixture screw. Help Reply #5 - 07/27/09 at 04:07:48 If all that fails, then generally one would have to drill out a harder from a softer. Tough job. I've clamped such things in a fixture and used a stiff drill press. Have to know the geometry of the screw, so have the new one available. Don't screw up the seat. Can be done. A pain!
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PTRider

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Re: brass idle mixture screw. Help
Reply #6 - 07/27/09 at 07:09:07

For general info:
--Throw away all your screwdrivers with rounded off tips...or dress them on a grinding wheel, don't get them so hot that you take out the temper, and return them to the original dimensions.
--Select screwdrivers where the tip exactly fits the screw slot.
--Hold the screwdriver exactly straight in the slot, press down firmly, and don't allow it to slip. If the screw doesn't want to turn, don't force it. Use a good penetrating oil (Kroil or B'laster PB, not WD-40) or alternating heat & cold.

Ditto for Phillips head screws...throw away the ones with worn out tips. The added complication is that our bikes don't have Phillips head screws, they're JIS. Look at the dot between two slots. Phillips screwdrivers almost fit right. JIS screwdrivers are available mail order and maybe special order from some shops. (JIS = Japanese Industrial Standard.)

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LANCER Serious Thumper Alliance Member Offline Savage Beast Performance Parts Posts: 10676 Oklahoma Gender:	Re: brass idle mixture screw. Help Reply #7 - 07/27/09 at 07:26:37 Drilling down to redress the screwdriver slot or to use an "easy out" must be done carefully. If during the drilling process you damage the threads that must be there for the pilot adjusting screw to use, then you have destroyed the usefulness of the carb body.
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voldigicam Senior Member Offline SuzukiSavage.com Rocks! Posts: 327	Re: brass idle mixture screw. Help Reply #8 - 07/27/09 at 09:20:46 I use gunmith's screwdrivers. And jeweler's screwdrivers. Good ones. store them padded.
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4carbcorvair Full Member Offline SuzukiSavage.com Rocks! Posts: 175 Maine Gender:	Re: brass idle mixture screw. Help Reply #9 - 07/27/09 at 15:46:53 Thanks. Looks like I'm buying another screw. I have soaked it. No matter what I do it will not turn and it keeps breaking off. I'll try drilling it out and replacing it after I get the new one to see how deep it goes. If that fails, new carb.
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drharveys - FSO Serious Thumper Offline Greetings from San Luis del Norte! Posts: 1776 St Louis MO Gender:	Re: brass idle mixture screw. Help Reply #10 - 07/27/09 at 16:51:07 4carbcorvair wrote on 07/27/09 at 15:46:53: If that fails, new carb. Or carb upgrade.
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Tonydtiger1971 Senior Member Offline Yet while we were sinners Christ died for us Posts: 493 Dawsonville, GA Gender:	Re: brass idle mixture screw. Help Reply #11 - 07/27/09 at 18:43:50 I've been thinking about doing this to my 03 Savage. How easy is it to get to the screw?
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4carbcorvair Full Member Offline SuzukiSavage.com Rocks! Posts: 175 Maine Gender:	Re: brass idle mixture screw. Help Reply #12 - 07/27/09 at 19:07:08 I had no problem getting to the screw, that was the easy part. Turning it has been the issue for me. Yes, thought about a carb upgrade too. Speaking of which, whats a good carb to throw on it?
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: brass idle mixture screw. Help Reply #13 - 07/28/09 at 09:44:03 The "Tube" the screw is down in serves no function. You can hack it away & get to the head of the screw. No chisels on the screw, bad idea. Did you get the whole cap out? Or did you just drill out the top end & leave the walls? Is that holding the screw? Will it screw in?
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4carbcorvair Full Member Offline SuzukiSavage.com Rocks! Posts: 175 Maine Gender:	Re: brass idle mixture screw. Help Reply #14 - 07/28/09 at 11:18:04 Plug is completely out, can see the walls of the port ahead of the screw. The screw will not turn in or out. I called and ordered a new adjustment screw, should be here Friday or Monday. I'll wait until it gets here before I start drilling the old one out.
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