Yamaha 115-225 HP Outboards Service Manual, Page 250Get this manual
POWER TRIM AND TILT SYSTEM
(8) The motor tums outYES
Is there leakage of fluid? "NO NO Is the hydraulic-fluid level correct?
Tighten or replace the union seat, or replace O-ring(P7-18)
Top-up(P7-16)
Is air present in the hydraulic-fluid?