Re: break-in on new Powerhead
8-10hrs at 25:1. First time out, get on plane as quickly as possible, but bring RPM back to 3500-4000 as soon as you plane. Vary the RPM between 3000 and 5000, every 3-4 minutes for the first hour. the second hour is basically the same, but you can go to WOT for a few seconds, and then pull back. Just don't hold the R's in one spot for more than a few minutes. The third hour you can stair-step for longer periods. 3500RPM for 3-4 minutes, then 3700-4000 for a few min then WOT, making sure you don't go past 5500RPM-WOT, for about a minute and then back off to 4000.<br />The remainder of the third hour, you can come to a stop, then pour the coals to it to WOT then pull back to between 4000-5000. The fourth hour on, you can pretty much do as you wish but don't hold WOT for more than 1 or 2 minutes at a time. Before the 5th hour, I like to shut down lift the cowl, and look things over for leaks and what-not.<br /> Depending on your tank size, 6-8hrs is OK for 25:1. After that, you can start going 50:1, but easy on WOT until you pass the 10hr mark.
