I have a 50 hp Johnson two stroke. It has a five gallon tank. How much oil do I mix with gas?

50:1  It will tell you on the back of the quart/gallon oil container.

How long has it been since the motor was last run?  If more than 2 - 3 months, then you NEED to change the impeller.  Don't worry, it is easy, and the part is not expensive.

First double check your tank.  Most portable tanks are six galllon so it makes it easy to mix, you just dump one 16 oz container of oil in for six gallons of gas.   Go to wal-mart and look where they keep their two stroke oil, they have a mixing bottle that has the different ratio's marked off, takes the quess work out of it.

How long has it been since the motor was last run?  If more than 2 - 3 months, then you NEED to change the impeller.  Don't worry, it is easy, and the part is not expensive.

Do you mean 2 - 3 Years?

How long has it been since the motor was last run?  If more than 2 - 3 months, then you NEED to change the impeller.  Don't worry, it is easy, and the part is not expensive.

Do you mean 2 - 3 Years?

2 - 3 years if used regularly, because it will just wear out from pumping so much water.  2 - 3 months if sitting because once the impeller gets wet, it needs to stay wet, and can dry out and crumble after a couple months.

Well maybe my question should be more like this. We bought a boat this winter. Like I said it has a 50 hp Johnson two stroke. It was winterized right(says the guy we bought it from), but we are fixing up the boat and will go to use it in a few weeks. What do we need to do for the motor. It hasn't been run in 5 months since we got, but probably longer since the guy had it. Thanks.

Gotta luv it!  Once it gets wet it will dry out and crumble after a couple of months?????????????????????????????   Where in the world did you hear that one from?  I would suggest who ever told you that, you not let them work on your motor anymore because they definetly feel that had a fish on and done set the hook.

Gotta luv it!  Once it gets wet it will dry out and crumble after a couple of months?????????????????????????????   Where in the world did you hear that one from?  I would suggest who ever told you that, you not let them work on your motor anymore because they definetly feel that had a fish on and done set the hook.

I agree. If that where the case I would have to change the one in my 9.8 HP 3 - 4 times a year.

I bought a Tracker that had not been run in four years.  The impeller still worked fine when I took it on a test run.  The following year I replaced it during a routine tune-up and it looked like it would last another season or two at least.

in that case, all of us "nothern guys" should be replacing them each year after the winter time storage.  

come on... every 2-3 months? :