This is the way that I do it.
This is straight out of the owners manual for the 04 model. I believe that this is the best way to break in a new motor, and keep from breaking it. I have run in quite a few motors in my time and have used basically the same method for alll of them, and they seem to last a good long time. I went 20 hours before I went flat out across a dry lake bed. And I could feel the motor getting better and better all the way up to 25 hours. My motor now has 185 hours on it, and other than a water pump seal and just recently at 182 hours a new set of cam followers.
Also, check the valves at 3 hours, then again @ 10 just to be sure. After that they won't move much.
RUNNING IN THE HUSABERG MODELS
Even very precisely machined sections of engine components
have rougher surfaces than components which have
been sliding across one another for quite some time.
Therefore, every engine needs to be broken in.
For this reason, do not load the engine more than 50% of
its capacity during the first 3 operating hours. Besides, the
engine speed must not exceed 7000 rpm. Avoid going fullthrottle!
In the following 12 operating hours, you may load the
engine up to 75% of its capacity. Use the motorcycle on
various types of terrain (road, easy off-road trails).
CAUTION: The Husaberg models were uncompromisingly
designed for off-road competition purposes
only. “On the road“ approved models FC/FE
are only allowed on public roads in the original
homologated (throttled) version. Avoid extended
on-road rides at full throttle.