I just bought this engine this afternoon from a fella that had it since 07 and used it only twice max 6 hours on the engine....The engine is cherry and still smells new....he started it up for me in one pull and ran it max 1 minute....I get home and started reading the owners manual and the manual indicates that the flush port on the engine should be used to flush the engine without the motor on????.......**** the guy used the fkush port and ran the engine to show me.....Did I toast the water pump? and what would you do now?