[ouidjat]

Hi,

For 3 and 5 ... ? you need a good translation, first.

For 8:
Cylinders are supposed to be empty since to stop piston engines you don't "cut the contact" but close fuel admission (muffle) until the engine is stopped by lack of fuel.
If you don't do it you will provoque a compression ignition (auto-allumage) which can damage the engine.

To start it - since we are talking about that - it's the contrary. Cylinders being empty you must fill them with fuel. That's what's explained by point 8.
This step is still in use with actual piston engined crafts. Nothing particular to the Bf 109. Just a manual injection pump actuator.

Regards, Franck.