It should have come with an instruction sheet which contains a parts list. Here's the list:
H19401
Pantograph Assembly
H19402
Body Shell Assembly
H19403
Chassis Assembly
H19404
Gear Box Assembly
H19405
PCB Assembly
H19406
Motor Assembly
H19407
Drive Shaft Assemmly
H19408
Light Bulb
H19409
Screw Set
H19410
Draw Bar Assembly
H19401
Pantograph Assembly
H19402
Body Shell Assembly
H19403
Chassis Assembly
H19404
Gear Box Assembly
H19405
PCB Assembly
H19406
Motor Assembly
H19407
Drive Shaft Assemmly
H19408
Light Bulb
H19409
Screw Set
H19410
Draw Bar Assembly