Инструмент для блокирования поршня 2-х тактных моторов
Locking Tool For 2-Strokes
Whenever you need to undo the nut on the crankshaft of a 2-stroke bike (especially small 50cc machines), it's advisable to lock the engine via the piston. This is where the locking tool comes in useful.
You screw it into the spark plug port to prevent the piston from moving up and down. The crankshaft can no longer turn, and the nut can be undone.
For spark plug thread M14 x 1.25