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Antique Gas Engine Discussion Meet collectors of hit and miss engines, ask questions about collecting, restoring and showing antique flywheel engines.

Antique Gas Engine Discussion

cushman C Intake


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  #1  
Old 07-25-2005, 07:36:32 PM
Lindy Lindy is offline
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Default cushman C Intake

Hi,I'm starting restore a cushman C #42073.While sandblasting the intake manifold I found a hole in the engine side of the manifold.After cleaning the hole this appears to be a cavity around the intake pipe.Does anyone know if this hole should have a plug or remain open?
Thanks,Lindy
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Old 07-26-2005, 09:39:23 PM
John Willis John Willis is offline
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Default Re: cushman C Intake

Not an expert here but there should be a matching hole in the cylinder. There needs to be a gasket where the two mate up. There should be a small slotted plug in the manifold that could be loosened or removed in cold weather. This would allow some exhaust gas to come out the small hole into the chamber surrounding the manifold to aid in vaporizing the fuel. At least that's what my little pea brain remembers.
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Old 07-27-2005, 05:33:40 PM
Lindy Lindy is offline
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Default Re: cushman C Intake

Thanks,there is a matching hole in the cylinder.It was pluged also.Thanks again for the response.
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Old 07-27-2005, 10:19:00 PM
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Lon Carlisle Lon Carlisle is offline
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Default Re: cushman C Intake

I have a cushman cub and it has a slotted screw in the hole I believe you're refering to. I never removed it as my engine runs like silk so I didn't want to do anything to change it's operation. A note on your restoration, be sure to have a good fuel check valve or it'll give you fits keeping it running and make sure the fuel tank is clean, this engine does not like any dirt in the fuel system.
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