Honda BF8, BF9.9 and BF10 Outboard Motors Shop Manual., Page 306Get this manual
Power Tilt Motor Does Not Operate
1Connect fully charged battery to the power tilt motor and check the motorTurn
Does not turn
-Abnormal Normal
Check for open circuit in the motor wireIf there is open circuit, replace the brush holder (P12-21, 22, and 38 thru 40) If there is no open circuit, replace or repair the power tilt motor (P12-21, 39 and 40)Replace the power tilt relay (P16-1, 2)