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Makotosun

Early petcock types

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Early petcock types was created by Pete-RT1

Just curious if any of our experts know when the bottom outlet petcock, shown on the right of the attached photo, was introduced and what models it was used on.
The left photo shows the rear outlet version fitted to both of my CT1s, AT1-C and my previous CT3.
My current CT3 came with an aftermarket petcock fitted and this bottom outlet one came with the bike as a spare needing a refurb (now done).
As I said, I'm just curious and will probably replace the aftermarket one with this one.

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Yamaha CT1-B
Yamaha CT1-C
Yamaha AT1-C
Yamaha CT3
1978 Yamaha DT175MX
2020 Honda CB500X
Last edit: 05 Dec 2023 09:52 by Pete-RT1.
05 Dec 2023 09:51 #1

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Replied by Gr8uncleal on topic Early petcock types

My suggestion would be 1975. The part number for the bottom outlet petcock starts 498, which is the code for the DT250B of 1975. It looks like there has been a slight change of style as well.
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05 Dec 2023 10:21 #2

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Replied by Pete-RT1 on topic Early petcock types

Alan, I think it's used on the previous model DT250A which is '74.
Yamaha CT1-B
Yamaha CT1-C
Yamaha AT1-C
Yamaha CT3
1978 Yamaha DT175MX
2020 Honda CB500X
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05 Dec 2023 11:21 #3

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Replied by Pete-RT1 on topic Early petcock types

Just had a quick look at the Japanese parts list and the part number is 438-24500-01.
Alan, thanks for looking and putting me onto the right model 

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Yamaha CT1-B
Yamaha CT1-C
Yamaha AT1-C
Yamaha CT3
1978 Yamaha DT175MX
2020 Honda CB500X
Last edit: 05 Dec 2023 11:32 by Pete-RT1.
05 Dec 2023 11:24 #4

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Replied by Gr8uncleal on topic Early petcock types

I concur! 

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05 Dec 2023 12:07 #5

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Replied by Mothersbaugh on topic Early petcock types

While we are on the subject, did the 74 (175 if wanting to be specific) have a shorter throw lever than the long one your pics are showing?
05 Dec 2023 15:38 #6

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Replied by Pete-RT1 on topic Early petcock types

Mother, according to CMSNL the same lever 214-24524-01 is used on the DT175A
 
Yamaha CT1-B
Yamaha CT1-C
Yamaha AT1-C
Yamaha CT3
1978 Yamaha DT175MX
2020 Honda CB500X
06 Dec 2023 10:36 #7

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