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1975 DT125 CARB

03 Aug 2020 09:56
GEORGIA
Mini Enduro
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1975 DT125 CARB #1
hello everyone
i got a 1975 dt125b from a barn find.i'am looking for a replacement carb for it.it has a bolt on carb.does ayone know were i could find one.

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03 Aug 2020 11:16
Mothersbaugh
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1975 DT125 CARB #2
Sorry, no I don't. But you should be able to rebuild that one, as all necessary parts are available from either Yamaha or Mikuni. Is the carb damaged in any way? Float bowl corroded through? One thing about the rebuild: you learn a ton about how the carb works and how to tune it for altitude and temperature...

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03 Aug 2020 12:22
GEORGIA
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1975 DT125 CARB #3
i took the carb apart and cleaned everything like new.
there is a small port in the bottom that i can blow air through,i know if it had fuel in it it would pour out.
it's were the banjo bolt goes in the bottom,seem's it's missing something

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03 Aug 2020 12:52
yamahahaha
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1975 DT125 CARB #4
Are you talking about the MAIN jet #6 in diagram

www.partzilla.com/catalog/yamaha/motorcy...75/dt125b/carburetor

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03 Aug 2020 13:48
GEORGIA
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1975 DT125 CARB #5
i need to take a picture tonight and post it.
yes with it screwed all the way in,i can still blow air through the port at the bottom

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03 Aug 2020 15:15
Mothersbaugh
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1975 DT125 CARB #6
Is the seal (#7, same diagram) there in yours?

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03 Aug 2020 22:31
darinm
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1975 DT125 CARB #7
If for some reason you carb is a disaster and can't be rebuilt, I have a '74 DT125 engine with carb sitting in storage. It will probably need a rebuild too, just thought I'd throw the offer out there as you're better off rebuilding an original Mikuni than buying a knock off.

1972 Yamaha CT2 175
1972 Suzuki TS 185 Sierra
2016 Yamaha WR250R
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04 Aug 2020 06:54
GEORGIA
Mini Enduro
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1975 DT125 CARB #8
This is the carb,when I put the carb together I can blow air through the hole in the bottom

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04 Aug 2020 09:09
darinm
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1975 DT125 CARB #9
The hole facing you in the bottom bowl? (left in the photo) Pretty sure that should have a brass ball bearing as a plug. Let me dig around the forum for a bit as this happened somewhat recently in another post and they may have the size if I can find the post. Looks like you need a new o ring on the jet setter too (piece that sticks down into the lower float bowl)

1972 Yamaha CT2 175
1972 Suzuki TS 185 Sierra
2016 Yamaha WR250R

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04 Aug 2020 09:15
darinm
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1975 DT125 CARB #10

1972 Yamaha CT2 175
1972 Suzuki TS 185 Sierra
2016 Yamaha WR250R

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