Dette står i manualen som fulgte med kammen min(Piper285T2): Before starting all engines, prime the oil system by turning the oil pump manually. Fill carburettor with petrol, fill radiator, and ensure correct ignition timing. Engine must start right away and not be subjected to a long grid on the starter. Do not idle engine during the first twenty minutes of operation; rpm should be kept at 2500 or above; in pushrod engines oil throw-off from the crank may not be sufficiant to lubricate the cam followers. Also contact stresses at the nose of the cam are very high at low speed. If adjustment need to be made during the twenty minutes break-in period, shut the engine down. DO NOT IDLE. Dette gjelder visst alle nye kammer, gjør du ikke dette så kan visst løfterne få problemer med å få "tilpasset" seg.