F Randolph Lest Forget SINCE engines getting more expensive day its time re view things should doing protect extend life power plants photos show basic mini mum procedures should followed field before dur ing after flying session Clean outside engine just outside airplane screwdriver helps hard-to-get-at spots Seal tank before 28 Model Aviation UseafuelfilterOnsomeofthesmallerengines Place mat carpet under engine difficult fit fuel line souse starting running over bare ground fuel can filling tank vortex created under spinning prop sucks dirt up toward engine Carry airplane flight line engine running After flight seal tank joining fuel overflow pressure lines piece small-diameter tubing keeps evaporation down eliminates drainage fuel engine Cover engine between flights Dusty bare ground worst enemy engines cover protection wind other run ning engines end ot flying day engine still running remove fuel line let engine run until dies Nitro anhydrous means attracts moisture out air does nitric acid formed Run fuel out engine 1-up ny putting tew drops Ot good machine Oil etc intake ano exnaust pans tnen flip prop few times distribute through engine synthetic oil used fuels will time evaporate leave no oil-film protection Now cover engine recharge batteries