DonHockaday
Recruit
- Joined
- Mar 3, 2004
- Messages
- 2
We have a new 115 hp, 4-stroke, Mercury outboard on our 24' Carolina Skiff. The manual doesn't have anything to say about break-in. The installer said to run it at varying speeds, but keep it below 3500 rpm for the first 4-1/2 hours of run-time. After break-in, cruise at 3500 rpm, but still vary the rpms periodically. I assume that means within a couple of hundred rpms either way, dropping back to 3500-3000 ever, say, 10 or 15 min.<br /><br />That is what I did with the 2-stroke we had. I don't know if 2-stroke and 4-stroke are different. I don't vary the highway speed of my pick-up, and no new cars have any break-in requirements.<br /><br />I am in no hurry to get anywhere, but others who use the boat say we should just ignore all that if it isn't in the manual. Should I just ignore break-in and ignore rpm variations?