1) Is the deck pressed steel, or cast alloy?
Pressed metal.

2) Is the starter on top of the engine, or on the side?
Top.

3) Plasic carby (throttle cable inside air hose?)
Cable inside air hose.

4) Where is the fuel tank?
It is part of the top moulding (cowl).

5) can you describe the top cover (cowling?)
Overall it is rectangular in shape with a rectangular grid pattern on top. It incorporates the fuel tank.