Mercury Break In Help

[gatorbait]

I bought 1997 rebuilt mercury 115 with only 9 hours on it. Before I take it out do I need to put 20 hrs on it before going above 4500 RPM? Also should I use mixed fuel, I've heard of this with new engines? If you have any other advice for breaking in this motor please let me know. Thanks.

[peterb]

Is it under any sort of warrantee?

I have had a couple of engines rebuilt and here is what i was told to do.

1. Disconnect the VRO (and do a straight mix). This was a condition for my warrantee. If you have the VRO hooked up i would probably leave it.
2. For the first 10 hours double up on the oil.
3. For the first hour just idle the engine at the dock.
4. For hours 2 through 10 stay at 3,500 RPM's or under.

At the end of the break in I changed the plugs because of the rich oil mix.

Good luck.
For the first 10 hours

[Abe's Rocket]

The only thing I would add to that is run the engine at a lot of different RPMs during that 10 hour period.