1985 OMC 65, 100 and 155 HP Models Commercial Service Manual, PN 507450-D, Page 229Get this manual
11Attach the body from OMC Special Tool PIN 378103 (Universal Puller Kit) to the flywheel using three screws (PIN 309492) and three washers (PIN 307640)Flat side of the body must face upThread OMC Special Tool PIN 321537 (lifting Eye) into the body until the taper of tool engages taper in center of the crankshaftTighten the lifting eyeUsing an adequate hoist, lift the powerhead from the adaptor l'
12Place the powerhead all carburation, ignition powerheadTo simplify out the various screws location
in suitable holding fixture and remove and electrical components from the reassembly and wiring installation, lay and clamps in order of their proper
Disassembly of Powerhead155
Discard all gaskets from the powerhead componentsScrape or peel off the gasket, being careful not to remove any metal with the scraper1Remove the screws retaining the intake manifold to the crankcaseTap the manifold around its edge with soft mallet to break the sealSeparate the manifold from the crankcase2Remove the cylinder head cover screws from each of the cylinder banksRemove the covers from the cylinder heads3If servicing the temperature sender, use tip of small screwdriver to pry the sender out of the cylinder head4Remove the cylinder head screws from each of the cylinder headsSeparate the cylinder heads from the cylinder block