Silly Question: How do I flush Engine?

[Swamp_Bear]

It's a Yammy 150, and I don't have "earmuffs." I'm not looking to crank it up, just to flush water through it after a trip into brackish waters of the sound.

Thanks!

[jtaylor1]

Check out the Yamaha motor website it explains it pretty well - I have a Yamaha 150 2 stroke - if you have the fitting on the bottom left that hooks on to a water hose, connect it to a water hose and flush for 15-20 minutes with motor off - so says my owners manual.

[Swamp_Bear]

Thanks, I'll check it out. I looked for my owner's manual, then after not finding it I went outside and looked for some kind of fitting earlier, and ended up 0 for 2.

Guess I need to dig up that owner's manual after all, especially now that I know it's in there. Into the dreaded den I go..

Thanks!

[BigDogBill]

Same process for the 4 stroke. I have the 150 and it has a fitting on the side that allows you to use the garden hose to flush - with the engine off.

Bill

[Swamp_Bear]

I found the manual, which led me to the fitting on the motor. It's right under the cowl of the headunit, a hose fitting that unscrews.

Done deal!

[Thfireman]

OK, I see that and have done that. Here is my question... Does that flush everything the same as if you hook up the cups on the foot that allow you to crank the engine and run it with the water flowing through? I do know not to run the engine while the hose is connected to the Yamaha flush hose.

[ILLOGICAL GGC]

I Have Been Told To Flush With Muffs To Flush The Power Head. Some Just Hook To The Hose Nozzle. I Do Both Before I Put It Away After An Outing And Use Salt Away On The Muff Flush

[Thfireman]

Thanks, I think I will do both just to be sure also.

[tneut]

Had a 115 Yamaha 4 stroke used. The previous owner did the hose flush through their fitting without running it it. When I did my 100 hour I was amazed at how much debris I found. Next 100 hours I did both the fitting and then the muffs and is was much better. Asked the mechanic, and his take on it was the fitting was for boats left in the water , and it was better to use the muffs.

I checked my 150 Yamaha 4 stroke manual and it says to flush the unit with their fitting and then at the end of this section it states "For cooling system flushing instructions see page 50".This shows how to do it with the muffs, though it is in a section for storing the motor. I continue to do both as the first can be done as the gear is being unloaded, then I power flush it when I'm done cleaning it out. If I'm lucky enough to have a water tap near the ramp I just power flush it there to save time.
Trent
08 215 CC -Simply Indestructible