"john m." wrote in message
m...
My frend repowered a Four Wins boat, from a 180 motor to a 120 motor.
When he took the boat out he can't break plane with it. When he tries
to go full speed the bow kicks up and the stern drops down. He tried
different trims on the outdrive but still no luck. Even with the
outdrive all the way down so that the impeller points a couple of
degrees towards the bottom, the boats acts the same way. Is there not
enough power in the 120 to do the job?? I own a sailboat so I don't
know much about powerboats. Any help will be greatly appreciated.

What size boat? If it's over 16', I think 120hp is too little.