The general idea is that you need to be able to get the engine up to at least a decent RPM and let it get warm without running too lean so the piston and sleeve will seat well during break-in. Just be careful so as not to get in too big of a hurry to get it broken in. Once you can get it to run well through the whole throttle cycle, then follow the break-in procedure as described in the manual

If you keep the setting on the rich side while you break it in, you should be fine. Is there anyone you can get help from? You will discover that there are some circumstances where the manual becomes more of a general guidline rather than absolute law. Experience, (whether it is your own or someone else's), can become your best resource.