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Old 06-06-2013, 07:10 PM
BillyRok BillyRok is offline
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Idle mixture screws (and pics)

I decided to replace the tiny o-rings on the idle mixture screws before putting the carbs back on the bike (thanks for the Suzuki part #s Motoman). The screws and springs came out easy but I had to fish the washers and o-rings out with a paper clip, a couple didn't want to come out. This is what I had:

[IMG][/IMG]

and

[IMG][/IMG]

You can see that the spring and washer slide onto the long straight shoulder of the screw with room to spare, but the o-ring only slides up the tapered shoulder, it won't fit over the straight shoulder with the spring and washer.

What holds the o-ring and washer so tightly in place in the carb (a couple were hard to get out with the paperclip) if there is space on the screw between the spring/washer and the o-ring? I don't see how tightening the screw in the tower puts tension on the o-ring if the o-ring doesn't fit the screw. Just trying to make sure I put it back together correctly.

Thanks for any insight.
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Old 06-06-2013, 09:31 PM
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DGXSER DGXSER is offline
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that o-ring stretches to roll up onto the shoulder section. It then gets pushed into tapered part of the port it goes into. Which is why they look flat on top and dished on the bottom when worn in. The spring keeps pressure to hold it down in the port.
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Old 06-07-2013, 10:20 AM
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Yard Dogg Yard Dogg is offline
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While we're on the subject, does anyone know a good way to seal them without the O-rings? I'm missing a few and they are old and rotten anyway, sorry to hijack the thread.
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Old 06-07-2013, 11:30 AM
BillyRok BillyRok is offline
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Motoman told me the o-rings are still available from Suzuki, part number is
13295-29900. He was right, I'm looking at 4 of them now. Maybe the part number should be included in the Carb Cleaning 101 thread??
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Old 06-07-2013, 11:56 AM
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GLoweVA GLoweVA is offline
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You can also get the o-ring kit from harbor freight and in it are o-rings that are the right size.
http://www.harborfreight.com/225-pie...ent-67609.html
Then you've also got o-rings for other things that you might need too.
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Old 06-07-2013, 12:25 PM
motoman motoman is offline
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Wink

Quote:
Originally Posted by GLoweVA View Post
You can also get the o-ring kit from harbor freight and in it are o-rings that are the right size.
http://www.harborfreight.com/225-pie...ent-67609.html
Then you've also got o-rings for other things that you might need too.
I know several have used these for this application, but for long time durability, they need to be the higher quality Nitril variety for the enviroment they're in.
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