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Makotosun

1973 ct3 Yamaha 175 RPMS

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Replied by goatboy56 on topic 1973 ct3 Yamaha 175 RPMS

I was having the same problem on my CT3  and replaced the o ring on the nozzle - used a 007 from O'Reilys for $.99 and cleans out the small holes with a fine drill bit and that fixed the problem.
2 - 73 LT3's
2 - 72 CT2's
2 - 72 DT2's
2 - 73 CT3's
73 DT3
75 DT250B
76 DT175C
Extra 73 CT3 ( parts bike)
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07 Apr 2022 07:00 #11

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Replied by Gr8uncleal on topic 1973 ct3 Yamaha 175 RPMS

That's the Main Nozzle. The Main Jet sits on the end of a banjo bolt that sits in the float bowl. Have a look at the CT2 carb parts diagram on CMSNL (for some reason the diagram for the CT3 is missing from that site). Partzilla will show the same diagrams.
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07 Apr 2022 07:16 #12

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Replied by osageorange8 on topic 1973 ct3 Yamaha 175 RPMS

Thank you going to buy one today
07 Apr 2022 08:53 #13

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Replied by osageorange8 on topic 1973 ct3 Yamaha 175 RPMS

I would have never looked there thank you
07 Apr 2022 08:54 #14

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Replied by Sneezles61 on topic 1973 ct3 Yamaha 175 RPMS

Tinkering on these old bikes isn't too hard to do. But, having the expertise of the fine folks on here to guide along on yer quest is priceless.. 
Sneezles61
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07 Apr 2022 13:24 #15

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Replied by RT325 on topic 1973 ct3 Yamaha 175 RPMS

Ok that's the one i meant when you came back with needle jet--which is what i'd call [it if it's official name wasn't jet setter]. No5 in the link. So question 'is', what Oring did you replace when you said needle jet.

www.partzilla.com/catalog/yamaha/motorcycle/1973/ct3/carburetor
07 Apr 2022 15:46 #16

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Replied by RT325 on topic 1973 ct3 Yamaha 175 RPMS

Well ok i give in--it's called nozzle main No4 [needle jet to me lol as slide needle works in it metered at the top few mm of it. Anyway, hope you have a cure.
07 Apr 2022 15:49 #17

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