Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 271Get this manual
Oil PumpManifold Removal POWER TRIM SYSTEM DESIGN I
3Slowly remove manifold from cylinderNote posi tion of above trim check ball assembly and remove
AWARNING
Oil pump from design type power trim system cannot be used on design 1 type power trim systems
Design I
Design II