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One problem to consider when choosing a location for the in-line fuel filter, is how to clean the unit without dumping fuel inside the aircraft.

In my IV-P, I finally placed the filter under the copilots floor, between the fuel valve and the fuel pump.  Since there is an unused port on the fuel valve, I intend to introduce some low pressure air into the system with the gascolator drain open;  which should empty out both the filter and the lines. Then the filter can  then be removed for cleaning without dumping any residial fuel inside the plane.

I have not tested the system out yet since I am finalizing all inside work, including the door,  before glueing on the top and bolting on the wings.  Hope this helps.

Bill Hogarty  

LML website:   http://www.olsusa.com/Users/Mkaye/maillist.html
LML Builders' Bookstore:   http://www.buildersbooks.com/lancair

Please send your photos and drawings to marvkaye@olsusa.com.