90hp 4stroke Merc

[bclinton]

i have a 90hp 4 stroke merc. i have had the oil replaced b4 i however have never done it myself. how do u do it? should i replace the oil filter every year as well? any tips would be great.


Thanks, bryan

[Chawazz]

I have a 70 4-stroke Evinrude/Suzuki.

I changed the oil myself a number of times. It's just like changing the oil in a car. Except, getting filters is more difficult. Also, you need access to water for the inlet to hook up while warming the enging up; so it is a bit messier than on a car.

I like to change the filter everytime. Access to mine is pretty easy. Just take a few screw out and pull off one panel.

Good luck.

[RJF]

Getting that filter off is messy. I found that if I use a plastic bag, and hold it right, most of the mess goes into the bag. Not too bad of a job. The price we pay for a quiet motor, I guess. Change the filter every year. I didn't one time, and the new oil turned as black as the old oil was. I did the whole job again. That oil is very expensive.