NAMCO NINJA ASSAULT SD Mode D'emploi page 61

Note: When reassembling match the D-type hole of the solenoid bracket
to the D shape of the solenoid and ensure that the ‘E’ ring and spacers
are in the correct positions.
Solenoid Spacers Slide guide
Solenoid bracket
Plunger
E-ring Harness exit (downwards)
Microswitch
Blue wire.
Black wire.