1998 Johnson Evinrude "EC" 150, 175 FFI Service Manual, P/N 520211, Page 170Get this manual
If electrical parts are replaced or even removed from the motor, check the followingWire and High Voltage Lead Routing as shown in service manual away from moving parts which could cut wires or wire insulation away from motor cover latches which can catch and cut insulation from High Voltage spark plug leads
Sleeves, Boots, Shields in position (to avoid shock hazard) not torn or cracked
Screws, Nuts, Washers tighten firmly They keep clamps in position and ends of wires from sparking where lockwashers are called for
"_Spark Plug Boots
not torn or cracked fully pushed onto spark plug Metal ClampsTie Straps position as shown in manuals