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Makotosun

Brand New Yamaha Petcocks for our bikes!

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Replied by Makotosun on topic Brand New Yamaha Petcocks for our bikes!

Mr DEET did the research and gets all the credit. I just passed it along.

I can tell you I use these on the 75-76 DT400's, and the work great. They look slightly different than the originals, but being current production bits for more current bikes, I think it is safe to assume the inner rubber bits are designed taking modern fuel additives into consideration.
IF it isn't one thing, it's another.
21 Mar 2015 06:10 #21

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Replied by Enginerd on topic Brand New Yamaha Petcocks for our bikes!


This looks great! Do we know what the diameter of the outlet fitting Is?
Trying to rescue a forlorn 1973 CT3. Wish me luck!
05 Apr 2015 20:10 #22

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Replied by MarkT on topic Brand New Yamaha Petcocks for our bikes!


The following information came from member DEET. He did the research and bought the various petcocks to measure and try.

3JN-24500-02-00 (Mako's favorite)
Right Side Outlet: 7mm

2GU-24500-02-00
Right Side Outlet: 8mm

23F-24500-00-00
Right Side Outlet: 6mm
On this one handle sits about an inch below the tank... my understanding is that it has more clearance than the two above

We all owe DEET a thank you for this information!
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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05 Apr 2015 21:27 #23

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Replied by Makotosun on topic Brand New Yamaha Petcocks for our bikes!

The above is correct. I like the 3JN model as it works flawlessly with the 1/4" Urethane fuel line that I like to use on these bikes.

www.amazon.com/Parts-Unlimited-Blue-Poly...=UTF8&qid=1428294627
IF it isn't one thing, it's another.
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05 Apr 2015 21:31 #24

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Replied by AT6 DRIVER on topic Brand New Yamaha Petcocks for our bikes!

Took your advice, bought some for the bikes and took care of the reserve issue with shorter stand pipe. Was able to salvage the fuel filter on stand pipe that was shortened.

Thank you for the advice!!





1975 DT 400B

If it moves and shouldn't , use duct tape. If it doesn't move and should, use liquid wrench.
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10 Apr 2015 20:00 #25

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Replied by on topic Brand New Yamaha Petcocks for our bikes!

I have a 1981 DT175 (not on the list). While cleaning the petcock I snapped off the plastic reserve inlet filter. Any suggestions where to find 1) a new filter or 2) a cheap petcock assembly. $50 for the replacement assembly at most part sites!
13 Aug 2015 20:52 #26

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Replied by MarkT on topic Brand New Yamaha Petcocks for our bikes!

Your late model DT175 probably has the "threaded bung" style...

Those are even more common... I don't know the thread size off hand though...

Look up eBay item number: 181791169645 for a similar part or one that might work just fine. $13.99 with free shipping.

(links from here to ebay seem to be broken)



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1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
13 Aug 2015 21:09 #27

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Replied by on topic Brand New Yamaha Petcocks for our bikes!

Thanks Mark.
13 Aug 2015 21:15 #28

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Replied by MarkT on topic Brand New Yamaha Petcocks for our bikes!

Just to clarify... I don't know for a fact that the petcock on ebay I mentioned will fit your bike. I do think it's the correct "style" and there are a lot of different sizes on ebay cheap.

I have a YG1 petcock and a 1980 DT175 tank so over the weekend I can check how close they are if you'd like.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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13 Aug 2015 21:33 #29

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Replied by Makotosun on topic Brand New Yamaha Petcocks for our bikes!


Rendering Error in layout Message/Item: fopen(http://open.api.ebay.com/shopping?callname=GetSingleItem&appid=makotosu-08bc-47da-8e7d-68e3ee6e51ca&siteid=0&responseencoding=JSON&ItemID=181777435108&version=889&trackingid=&trackingpartnercode=9): failed to open stream: Connection refused. Please enable debug mode for more information.

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