Seized mariner

[fixing_engine]

I have a mariner 25 hp model n

I have a mariner 25 hp model no 648s and I am hoping someone can recommend how I can get the piston out of it as it is seized.

 

[galamb]

"Matt, you can remove the head

"Matt, you can remove the head, basically soak the whole cylinder in oil and hope it frees up.

That model is a very old Mariner (early-mid 70's) and neither Merc nor Yamaha carry any parts for it at all.

If there is any kind of real damage at all to the powerhead itself you would be best to part out what is good and find yourself another motor...."