NAMCO NINJA ASSAULT DX Manual Del Operador página 59

Note: Take care not to lose the shakeproof washer under the Earth
Terminals.
Gun Assy
Play Panel
Connector Cover
Whizz Nut (M6)
Shakeproof Washer
Earth Terminals
Whizz Nut (M6)
Connector
Play Panel (rear)
Note: Ensure that the shakeproof washer is refitted under the Earth
Terminals.