1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, P/N 507875, Page 405Get this manual
Trim "IN" ITiit "DOWN" Mode E.1 following manner:
1Hydraulic pressure is directed to the reverse lock check valve causing the piston to open the trim check va.lve
When the hydraulic unit is in the trim "in"tilt "down" mode, the hydraulic fluid is routed in the
side of the pump control piston