This is the screw for the engine head (number 15 in the diagram) and it is also suitable for closing the two engine blocks (crankcase). Number 12 in the engine...
The screw is also suitable for closing both engine blocks (crankcase), you will only need one for reassembly. Suitable for Yamaha Bws Zuma 50F and 50FX 4-stroke. The screw is...