I have an OS 70 surpass 4 stroke,i took the head off and backplate and to find out bearings and crank were all rusty.
My question is how do i get the bearings out?
I can"t seem to pull the piston connecting rod off or figure out how to get the piston sleeve out.
Any help would be GREATLY appriciated!
Thanks, Joe :stupid:

What appears to be rust could actually be congealed and burned synthetic oil or even castor oil. If it rubs off easily with a finger or a q tip then you are probably OK to run the engine as is. If it is rust then you will need to heat the engine to about 250 dgrees F to get the liner out which will then make it possible for you to get the con rod off the crank pin. After the crank is out (heat might be needed here as well) heat the case again an tap out the bearings on to a wood block. Sometimes it takes repeated attempts or even a little more heat to get the job done.

You will have to pull the cam before the crank will come out also....

Ernie