My brother drove yesterday and heard “wire loss” and a clacker. Coupling pulled and right on. The sound can be heard right at the end of the video.Video Now I have removed the engine and started to feel slow. After apparently not getting off the cylinder, I took off the clutch cover. There I found 2 screws lying down.They belong to this part (what should it be??)? Now the question really comes up, further disassemble or test… Bzw how to test…? Almost thought of assembly and then turning at the crankshaft with air pressure screwdriver. The sound should then be gone… Shouldn’t it be enough?