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John H Murphy
Joined: 03 Jan 2007
Posts: 78
Location: Henderson, NV
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 Posted: Sun Mar 04, 2007 6:18 pm Post subject: carburetor rebuild schedule |
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How often does one rebuild a carburetor? My engine is how 7 to 8 years old, Rotax 503 DCDI with 190 hours. The carbs work fine as far as I can see.
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The BaronVonEvil
Joined: 23 Jun 2006
Posts: 76
Location: Walla Walla, WA.
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| Posted: Tue Mar 06, 2007 11:19 pm Post subject: Re: carburetor rebuild schedule |
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Hi John,
As for carburetor maintainence I usually check my carb in the spring just before the flying season gets going.
I drop the float bowl and check for dirt & muck. It seems no matter how many or how fine a filter you have, dirt some how manages to get through.
I'll check the jets for build-up of funk and make sure the're clean & secure.
Next check the throttle sleeve, bore and jet needle for condition and wear.
Then its the throttle cable, enrichener cable (if used) and fuel lines & fittings.
Also check the carburetor to manifold rubber coupler for attachment, flexability and cracks.
Finally, I will inspect and clean the airfilter and re-oil it with the filter manufacturer's oil.
Usually, if the plane is being used regularly, fresh fuel is being used, the carb(s) should provide accurate and reliable service.
Nevertheless, vibration, the fuel itself and UV light will take its toll of the carburetor and its related parts.
It really doesnt take very long to do this work, maybe a half hour for each carburetor.
If you havent done any work on your carburetors I'd say you really need to check them throughly before heading off into the wild blue yonder.
Best Regards,
Carlos G
AKA BaronVonEvil
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