Hitachi NR90GC - 3-1/2" Gas Powered Clipped Head Framing Nailer Technical Data And Service Manual page 35

Spark plug cable
Wiring connected to the motor
Spark Plug (A) [11]
Connector of the motor
Top Cover [3] (Do not open excessively.)
Washer M5 [2]
Hex. Socket Hd. Bolt M5 x 14 [1]
Handle section
Cylinder head section
Housing section
Fig. 24
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