1978 Johnson 175, 200, 235 HP Outboard Service Manual, Page 186Get this manual
TORQUE CHART Fill plug 45-50 inIbs(5.0-5.5 N.m) Manual release valve 45-55 inIbs(5.0-6.0 N'm) Valve housings 50-60 inIbs(5.5-7.0 N.m) Trim cylinder end cap 25-30 ftIbs(34-40 N.m) Pump screws 25-30 inIbs(2.8-3.4 N.m) Manifold plate screws 25-30 inIbs(2.8-3.4 N.m) Tilt tube nutftIbs(32-36 Nm) Then back off 1 to 1 turn after torquing
1Tilttrim separation valve 2All other external valves
Figure 9-26Valve Sizes Replace manual release valve, if removed, with new 0- ring and tightenSee Torque ChartInstall snap ring flat side outRefill reservoir with OMC Sea Lube Power Trim Tilt Fluid and purgeSee page 9-7