1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, P/N 507875, Page 431Get this manual
2 Oil and install both trim caps on the rim rods, as shown3Reinstall the manifold in the holding fixtureOil and install both trim piston and cap assemblies into the manifoldSlide the piston into the sleeve, and then with the end cap flush with the manifold, slide the piston all the way to the bottom of the boreDo not thread the end caps into the manifold at this time f31
4 Without removing the piston and rod assemblies, slide both end caps off the rods
5Adjust the manifold on the holding fixture so the trim cylinders are levelUsing the correct fluid, fill both sleeves all the way to the top By filling certain areas of the manifold with fluid during assembly, you will reduce the amount of time necessary to purge the system of air when you are finished
6Oil and install both trim end caps in the manifold Thread them in flush with the manifold by hand Using OMC Trim Cylinder End Cap Remover PI 324958 and torque wrenchtighten the end caps to torque of 55 -60 ftIbs(75 -81 Nm)7Install the two identical short check valves in the front of the manifoldTighten the valves to torque of 50-60 in Ibs(5 ,5-7,0 N'm), using drag link socket and torque wrench8Install the longer trimtilt separation valve