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Author Topic: Cm400a  (Read 981 times)

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Offline Sdsbassist

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  • Gus, Austin, MN.
Cm400a
« on: October 06, 2018, 05:09:15 PM »
So picked up an 81 cm400 for my wife.

Really nice shape! Carbs were gunked so took apart clean gaskets etc.

Weird issue. The right cylinder will only fire at half throttle and above. I've pulled pilot jet again and no difference.

Good spark, checked with a light.

Sounds like a fuel issue, right?

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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline MoMo

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Re: Cm400a
« Reply #1 on: October 06, 2018, 05:26:57 PM »
did you pull the midrange/emulsifier out and clean them?  Those bikes command a fairly high price in this area....Larry
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Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Cm400a
« Reply #2 on: October 06, 2018, 05:28:08 PM »
Quote from: MoMo on October 06, 2018, 05:26:57 PM
did you pull the midrange/emulsifier out and clean them?  Those bikes command a fairly high price in this area....Larry
Ya, put em in the light and everything.

Paid a cool 350 for it. Titled with 1400 miles.


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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"
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