2001-2014 Honda BF/BFP8D, BF/BFP9.9D Outboards Shop Manual, Page 307Get this manual
BF80-BF9.90 Power Tilt Does Not Hold
1Check the manual valve for tight- ness Tight Loose Tighten the manual valve securelyCheck for oil leakage from the power tilt assemblyI Not leaking
Leaking
Repaire the power tilt assembly as necessary (Section 12)
3Check the oil level with the piston rod fully extended (P12-35)