While cutting my grass, the mower (TORO) did not start after a break.
The free running gear oft the starter motor was totally outworn. The spare part was deliverable, but it would have lasted some days and I wanted to go on cutting, before the rain will come on the day after tomorrow. So I drew this gear in the evening, printing it in the morning and finished cutting the grass in the afternoon, after successfully reassembling the starter motor.
The motor itself is a briggs&stratton - so the gear for the starter-motor may fit with other brands.
diameter 41 mm
Printed it with 100% infill in PLA (never did ABS or even nylon before, which would make it lasting longer).
It did it´s job for today but I don´t think it will survive very long - so I ordered a spare part - laid-back, because all grass is cut :)
Drawn with FreeCAD ... file added