Mariner - Whats this hole for?

[Case]

On my '87 15 Mariner, there is a screw with the word "WASH" cast just above it into the leg. What is it for and how is it used?<br /><br />It looks like a rinse port for the engine, except it isn't very big. I called my friendly dealer and the nice young lady that answered the phone had no idea.<br /><br />Thanks guys, and keep up the excellent work (How does schematic make all of those cool illustrations?).<br /><br />Case

 

[Trent]

Re: Mariner - Whats this hole for?

I guess the guys aint going to tell ya..Your right! Its for flushing and it takes a special adapter. If your cheap like me you will just get a bolt thats the right size and drill it out and connect the water hose to it (be creative).<br /><br />Just for your information..Your Mariner is not really a Mariner..Its a Yamaha.<br /><br /> Dont run it over idle on the hose.

 

[Case]

Re: Mariner - Whats this hole for?

Trent,<br /><br />Thanks a lot. You are correct. There is a made in Japan badge on the transom mount.<br /><br /><br />I figured those crafty asians had a way to deal with the water pickup placement and the issue of salt water flushing. Do I really have to run the motor? I figure hose pressure should do the trick. My motor is a bit cold mnatured and prefers to idle after it has run for about 2 minutes.<br /><br />Glad you own one of these. So far so good.<br /><br />Thanks again Trent... Smooth sailing and be safe on the water.<br /><br />Case

 

[DJ]

Re: Mariner - Whats this hole for?

They're right. It's for flushing.<br /><br />My last Suzuki had the same thing. The manual for that engine said it did NOT have to be running to get a thorough flush. That engine actually had a bolt that needed to be removed to fit the flush adapter.<br /><br />Are you sure you didn't get something with the engine that you weren't sure exactly what it was for? Mine was in the tool kit that came with the engine.

 

[Trent]

Re: Mariner - Whats this hole for?

I bought mine new in 1984 and it did not come with the flush adapter. To really flush it correctly you need to warm it up till the thermostat opens up. <br /><br />Also you can just drop the leg down into a garbage can and flush it that way.<br /><br />Iv never had any problem with the engine. Change the impeller every few years and the gear oil also. Plugs and fuel filter..Thats it. Good luck.