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Zenith 78 carburetor

Old Marine Engine » Carburetors, Mixers, Vaporizors » Zenith 78 carburetor « Previous Next »

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Rick Batt
New member
Username: belfry

Post Number: 1
Registered: 08-2014
Posted on Monday, June 29, 2015 - 04:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

My Palmer BH 25 idles great but the high speed adjustment does not change operation under load. Gas is good, not sure about the electric pump but is working. I replaced a number of parts included in the rebuilt kit. But fully closing or opening the jet makes no difference. Any suggestions?
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Rick Batt
New member
Username: belfry

Post Number: 2
Registered: 08-2014
Posted on Monday, June 29, 2015 - 06:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I misspoke. It's a zenith 87 series carburetor. And it does accelerate with out a load. Compression is about 65 lbs ( s/b 100) and will backfire occasionally.

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