late '70s outboard Mercury (merc) 7.5HP flush?
 

I have this old merc that still runs like a top. But I never had an
owners manual. There's a plug labeled flush in the middle of the
thing. Is there a hose flush attachment I can buy to run this thing on
the stand?

Thanks in advance

late '70s outboard Mercury (merc) 7.5HP flush?
 

Just use this fitting to flush the motor. Do not run the motor with a
hose attached there. You will burn out your water pump.

Paul

late '70s outboard Mercury (merc) 7.5HP flush?
 

Okay, that helps a lot. That flush is more for purging water and
debris from the motor. Thanks for the advice.