2008 Evinrude E-TEC 55MFE Technical Manual, Page 156Get this manual

2008 Evinrude E-TEC 55MFE Technical Manual, Page 156

FUEL SYSTEM FUEL COMPONENT SERVICING Installation IMPORTANT: All injectors must be installed in the correct cylinder by serial numberImproper injector installation can result in powerhead failureInstallation of replacement injectors requires the use of diagnostics software and fuel flow data supplied with all replacement injectors on 3.5 infloppy disk002316

through mounting flange of injector and into cylinder head
Tighten screws in stages, starting with the lower screw First torque is ftlbs(7 Nm) Second torque is 10 ftlbs(14 Nm) Final torque is 24 to 26 ftlbs(33 to 35 Nm)

The following items and their mating surfaces must be cleaned prior to reassembly: Injector Cylinder head Adapter Screws Threaded areas
Tighten Screws in Stages