1998 Johnson Evinrude "EC" 150, 175 FFI Service Manual, P/N 520211, Page 149Get this manual
Powerhead Servicing &
To avoid accidental starting of engine, twist and remove all spark plug leads before beginning serviceof the number and types of fasteners, reinstall fasteners in their holes as engine components are removed This will simplify identification and assembly1Follow procedures in 60 LV Service Manual for removal of lower engine covers, trimtilt wires, shift rod disconnection and removal of powerhead from exhaust housing2Follow procedures in Sectionsof this service manual for removal of fuel and oil components3Remove electrical and ignition components4Follow procedures in 60 LV Service Manual for disassembly, cleaning and inspection where applicable5Follow procedures in 60 LV Service Manual for assembling the powerhead except for:
INote Because
Piston OrientationIt is very important to notice that pistons are stamped "port" and "starboard" in this engineAll pistons are also stamped "exhaust" with part numbers Using these stamps, orient the pistons with the correct cylinders and mark the bottom wrist pin hole with an indelible marker