Nắp bình xăng máy cắt cỏ (M45x3)

Gas cap for a lawn mower, size M45x3.

Can be printed without support. Lay it on the top with the hole upwards.

The layer height should be not more than 0.2 mm. Otherwise the threading could come out bad (overhang problems). Optimal results are achieved with a layer height of 0.1 mm.

There is space for a gasket in the inner space of the cap.

It is designed with a clearance of 1.25 mm for the threading. For my lawn mower,  this fits just fine. But I can not guarantee that it will fit on yours. You most probably can't simply scale the model to make it fit. Scaling would change the pitch or the flank angle which renders the threading incompatible.

The type of the threading is M45x3 (diameter 45mm, pitch 3mm per turn).