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I need help with condenser spec for 69 DT 250

  • pmb
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Hi everyone. I am trying to find the specs for the condenser on my 69 DT1B 250. I have looked through the manual and I can't find a value. The Yamaha part number is not available so I am trying to get an alternative. I am also wondering how generic the condenser is. Maybe someone can recommend a known successful generic alternative. Thanks 
02 Aug 2021 12:44 #1

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Tons of them on eBay.

I also have them if you can't find what you want.



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Where the Yamaha Enduro is still a current model...
02 Aug 2021 14:28 #2

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My DT2 bible says resistance 3 M 'can't find next cymbal, upsidedown U.
Capacity 0.25 ?F U shape cymbal.. If in doubt just hang a second condenser from the wire into the plug coil & earth it. Honda run there's attached to the plug coil. ps, dt2 is as near as i can find to dt1 in my stuff.
 
Last edit: 02 Aug 2021 17:28 by RT325.
02 Aug 2021 17:27 #3

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0.22 microfarads +/- 10% from page 62 of the service manual at yamaha-enduros.com/index.php/service-man...ctory-service-manual

From my experience I agree with DEET in that it is better to buy a suitable genuine or aftermarket replacement than to find some random replacement.  It also has to survive the temperature, vibration and voltage it is exposed to in the engine.

Good luck!
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02 Aug 2021 17:28 #4

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RT325 said " My DT2 bible says resistance 3 M 'can't find next cymbal, upsidedown U."

That is an insulation resistance value.  The upside down U is really the Greek letter omega, and represents ohms.  After discharging (shorting out) the disconnected condenser, using an ohm meter the resistance should be 3 megohms (3 million ohms) or more.  It is a measure of how leaky electricity wise the condenser is.
02 Aug 2021 17:56 #5

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Found my dt1e manual stamped july 1970 from work. Says 0.22 & 3MU--'upsidedown'.
02 Aug 2021 17:57 #6

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