I want a tuition free Msc scholarship in mechanical ingineering. I have Bsc in mechanical ingineering from jimma university institute of technology, jimma Ethiopia, and I want further education.

It really won't happen. You may get some assistance from governments or from companies, but unless you are at the top of your class and can convince a school that it is to their benefit. You need to start contacting the aid departments of schools.

Doesn't everyone? Fact is very, very few people will ever get one. Prepare to pay for it yourself. Because you almost certainly will have to.