SuzukiSavage.com - Question about petcock

Drestakil Full Member Offline innocent bystander Posts: 178 Southern Illinois Gender:	Re: Question about petcock Reply #15 - 10/30/16 at 06:23:28 Turning it off EVERY time is a good habit to get into. One I'd like to develop one day. Turning it back on before I start riding is another habit I should probably work on. Unfortunately, my forgettory is a little better than my memory.
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Papa Bear Senior Member Offline Posts: 476 Canada ... near the Motor City Gender:	Re: Question about petcock Reply #16 - 10/30/16 at 07:41:30 The world is saturated with bikes that use vacuum operated petcocks and have for many years. I have a little SYM Wolf Classic 150 that I put 21,000Km on with no hiccup in the vacuum operated fuel delivery. What is the weak point in Suzuki's S40 petcock?
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Mr.T Junior Member Offline SuzukiSavage.com Rocks! Posts: 55 Tega Cay, SC Gender:	Re: Question about petcock Reply #17 - 10/30/16 at 08:07:45 The rubber bits, at least on the one I took apart. Age, heat and ethanol is hell on rubber. Time would have caught up on your SYM petcock as it does on every one out there. Some just go earlier than others....
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Mr.T Junior Member Offline SuzukiSavage.com Rocks! Posts: 55 Tega Cay, SC Gender:	Re: Question about petcock Reply #18 - 10/30/16 at 08:13:23 and I guess I could have rebuilt the OEM Savage petcock, but: 1) it probably would have cost more than the Raptor and 2) I am used to shutting off the fuel everytime coming from classic BMWs and Vespas. So, no big deal.
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Rodger Senior Member Offline SuzukiSavage.com Rocks! Posts: 256	Re: Question about petcock Reply #19 - 10/30/16 at 08:16:14 I guess it all depends...I had a '78 Suzuki GS550E and never had a problem with the vac petcock...and a '93 Kawasaki Concours on which the petcock "wept" a little bit despite new seals. From what I've read here, the S40's petcock diaphragm tends to lose its flexibility, creating a fuel-starvation condition.
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Papa Bear Senior Member Offline Posts: 476 Canada ... near the Motor City Gender:	Re: Question about petcock Reply #20 - 10/30/16 at 08:24:22 Are replacement diaphragms available for the petcock?
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Papa Bear

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Re: Question about petcock
Reply #21 - 10/30/16 at 08:30:19

Mr.T wrote on 10/30/16 at 08:07:45:

Time would have caught up on your SYM petcock as it does on every one out there.

There is a Canadian fellow who lives in Taiwan where the SYM is manufactured, he has a website that sells SYM parts.
I asked him if there was a manual petcock available and he said he wasn't aware of one .... that there was so little problem with the vac petcock there was no need.

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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28886 L.A. California Gender:	Re: Question about petcock Reply #22 - 10/30/16 at 08:46:44 Papa Bear wrote on 10/30/16 at 08:24:22: Are replacement diaphragms available for the petcock? yes they are
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Papa Bear Senior Member Offline Posts: 476 Canada ... near the Motor City Gender:	Re: Question about petcock Reply #23 - 10/30/16 at 08:53:48 verslagen1 wrote on 10/30/16 at 08:46:44: Papa Bear wrote on 10/30/16 at 08:24:22: Are replacement diaphragms available for the petcock? yes they are Does someone have the part number? ...
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Drestakil

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Re: Question about petcock
Reply #24 - 10/30/16 at 09:14:21

Papa Bear wrote on 10/30/16 at 08:53:48:

verslagen1 wrote on 10/30/16 at 08:46:44:

Papa Bear wrote on 10/30/16 at 08:24:22:

Are replacement diaphragms available for the petcock?

yes they are

Does someone have the part number? ...

Your best bet would be to call a Suzuki dealer. Here's the link for testing the petcock. http://suzukisavage.com/cgi-bin/YaBB.pl?num=1251932429

If you ever have problems with the way the bike runs. Do this test first. If prefer the stock petcock, don't do anything except go through the link I posted so you'll know how to test it. It could give you many years of trouble free service.

I changed mine because of the stories on here about them failing but it worked fine. Plus, all of my other bikes use a manual petcock. They have a simpler design and are less likely to fail. I look at the Raptor 660 as cheap insurance.

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Rodger Senior Member Offline SuzukiSavage.com Rocks! Posts: 256	Re: Question about petcock Reply #25 - 10/30/16 at 09:51:00 I seem to recall a post somewhere here about how to modify the stock, vacuum petcock to an on/off/reserve mode, but danged if I can find it again. Verslagen? Old Feller? Anybody?
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verslagen1

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Re: Question about petcock
Reply #26 - 10/30/16 at 10:09:45

Rodger wrote on 10/30/16 at 09:51:00:

I seem to recall a post somewhere here about how to modify the stock, vacuum petcock to an on/off/reserve mode, but danged if I can find it again.

Verslagen? Old Feller? Anybody? Undecided

have some fn patience.
I gotta go get the package outta the box.
the thread got deleted somehow or you'd have the info.

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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28886 L.A. California Gender:	Re: Question about petcock Reply #27 - 10/30/16 at 10:30:18 K&L 18-4344 petcock repair kit gs1150 there'll be a couple extra parts but it fits. about $20 when I got it a few years back.
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Rodger Senior Member Offline SuzukiSavage.com Rocks! Posts: 256	Re: Question about petcock Reply #28 - 10/30/16 at 11:51:40 For what it's worth: Was looking for the manual petcock mod in Tech Forum...but turns out, it's accessed from the "fuel & air" on the right side of the homepage, posted by bobo383 In 2005.
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batman

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Re: Question about petcock
Reply #29 - 10/30/16 at 19:00:07

The problem the the stock petcock is you never know when it's going to fail (but it will) mine did at 70mph on the mass. turnpike as I was passing an18 wheeler ,bike died with 4 cagers behind me also ready to pass . Made it to the right shoulder but wasn't a good thing .Finally got it started in pri. went home and ordered a gen-u-wine Raptor 660.

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my old work mates called me MacGyver

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