NO HOLES in the cowl. The hose would pass through the control bundle and then "splice" into the existing system. That way, it looks clean and professional, and the factory flush fittings still work normal.
This youtube video shows how it was done on a different outboard. (OMC??)
Yes, I am trying to flush the motor from a fitting I plan to install IN the boat. Trying to access the flush ports on the motor is difficult to reach from a precarious position at the transom. The problem is I can not find where the flush hose goes into the engine block. It disappears below...
I have a Worldcat catamaran with twin 2019 Yamaha 115hp 4 stroke engines. Accessing the flush fittings is very difficult while the boat is in the water. I am hoping to setup a system where I can attach the hose inside the back of the boat to flush the engines. I have seen this done on other...