503 maintenance schedule
On "Maintenance schedule" section of the Rotax 503 MM' ,it states that engine overhul was to be carried out evey five years or every 300HRS whichever comes first, contace authorized, distributor or service center.
I would like to clarity that "5years" meaning whether from the date of engine manufactured or from the date engine was first uesd?
In my case, I have an engine that is manufactured in 2002 , that engine was installed in 2009 and it has 50 hours on it.
Do I have send to the engiine for overhul?