Honda Outboards BF40A/BF50A Service Manual, Page 297Get this manual
BF40A-BF50A Power TrimITiit Motor Does Not Turn Connect fully charged battery to the power trimltilt motor and check the motort
Does not turn
Check for open circuit in the motor wire If there is open circuit, replace or repair the motor wire If there is no open circuit, replace power trimtilt assembly
Check the power trimltilt relay (See base shop manual)