According to Rotax, before first engine start the oil is forced into the various passage ways and air purged from the lifters by rotating the prop 40-60 times (less if tank is pressurized with air). The inlet line to the tank is to be removed and oil which would have gone into the tank is collected in a clean container. After seeing 40 psi on the gage, the oil line is re-connected to the tank and the collected oil is filtered back into the tank. My question is this: Why collect the oil and then put it back? Why not let the oil discharge back into the tank the way it normally does?
Jerre
Jerre