2001-2014 Honda BF/BFP8D, BF/BFP9.9D Outboards Shop Manual, Page 308Get this manual
BF80-BF9.90 Power Tilt Motor Does Not Operate
1Connect fully charged battery to the power tilt motor and check the motorDoes not turn Check for open circuit in the motor wire If there is open circuit, replace the brush holder (P12-15, 12-30) If there is no open circuit, replace or repair the power tilt motor (P 12-14, 12-30)
2Check the power tilt relay (P 16-3)
Abnormal
Replace the power tilt relay (P16-1, 2)