2001 225 optimax blew new rings (break in procedure)

[RMabus]

All I posted a more descriptive post in the wrong forum but I blew two sets of brand new rings off pistons in a new to me 225 optimax. As mentioned the motor is new to me and before we put it on my boat a trusted quality mechanic did a ring job on it. Does anyone have a break in procedure for this they know to be accurate? I have done some searching and only found some details for an evinrude on Crowley Marine. Thanks.

[JOE54]

consult factory MERCURY MARINE SERVICE MANUAL

[DewRonInc]

Rings came off pistons? How? Ring lands damaged?

[JOE54]

standard piston in a .044 hole probly , you know they are now

[DewRonInc]

Hmm, that would suck joe

[DewRonInc]

Had to have measured before going through all that huh…

[EuropeanAM]

All I posted a more descriptive post in the wrong forum but I blew two sets of brand new rings off pistons in a new to me 225 optimax. As mentioned the motor is new to me and before we put it on my boat a trusted quality mechanic did a ring job on it. Does anyone have a break in procedure for this they know to be accurate? I have done some searching and only found some details for an evinrude on Crowley Marine. Thanks.

If you would, please take a moment to review the Announcements at the top of the Forum, and be sure to provide the Required Info (serial number) when posting. Thanks!

Rings don't just "Blow off the pistons". There's got to be a bit more to this story.

Follow the recommendations in the Factory Owner's Manual. You can also reference the FAQ Section in this forum for Optimax Engine Break-In.