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Old 06-10-2019, 05:03 PM
edward7048 edward7048 is offline
Join Date: May 2010
Location: Kokomo, In.
Posts: 106
Default changing carb. floats

What is the best way to change the floats in the bing carb. on the RV-12?
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Old 06-10-2019, 07:23 PM
Driftdown Driftdown is offline
Join Date: Jan 2011
Location: Clearwater, Florida
Posts: 367

Originally Posted by edward7048 View Post
What is the best way to change the floats in the bing carb. on the RV-12?
Swing the bail out of the way and drop the bowls.
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Old 06-10-2019, 07:52 PM
tomkk's Avatar
tomkk tomkk is offline
Join Date: Apr 2014
Location: Port Orange, Fl
Posts: 853

I have to slide the carb throat out of the rubber sleeve to make room to drop the bowl. Loosen the clamp around the rubber sleeve, rotate the carb a bit to break it loose from the rubber and slide it out. That gives me enough room to swing the bail out of the way and drop the bowl.
Port Orange, Fl
RV-12 N121TK ELSA #120845; first flight 06/10/2015; 650 hrs as of 09/2019
RV-12 N918EN ELSA #120995 Eagles Nest Project; first flight 05/18/2019
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Old 06-10-2019, 08:12 PM
RFSchaller RFSchaller is offline
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,514

Initially I was very reluctant to mess with my carburetors and figured if it ainít broke donít fix it. Eventually I started opening them up to check for debris and look at the floats. I found them to be pretty robust and resistant to most beginner mistakes. I would suggest going to one of the ROTAX courses and get the instructor to pull one apart. Itís not really part of the service or line maintenance courses (appliances are part of the Heavy Maintenance Course), but most instructors will take a few minutes to open one up and dispel the mystery.
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Old 06-10-2019, 08:14 PM
DHeal DHeal is offline
Join Date: Sep 2006
Location: Windsor, California
Posts: 829

You might find it advantageous to remove the air filter on the right-side to provide sufficient room to pull the carb out of its socket. The left-side carb can be removed from its socket with its air filter in place. Be careful when removing the bowls as there may be some residual bowl fuel splashing about.
David Heal - Windsor, CA (near Santa Rosa)
EAA #23982 (circa 1965) - EAA Technical Counselor and Flight Advisor; CFI - A&I
RV-12 E-LSA #120496 (SV w/ AP and ADS-B 2020) - N124DH flying since March 2014 - 830+ hours (as of Oct 2019)!
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