The author had a mini-tractor for a long time and they could not start it with the whole collective farm. It was decided to try to spin the tractor engine with a scythe. Of course, the scythe motor itself is rather weak, then you need a gearbox. The author adapted the gearbox for the Chinese map onto the scythe, he stood on the motor from the brushcutter without alterations.
To make the car comfortable to hold in my hands, the author made a steel plate, which he fixed on the gearbox, and handles from a steel pipe were welded to the plate. On one of the handles and was put the "trigger" throttle control. Well, the author put a part of the handle on the gearbox shaft, which you need to rotate the flywheel shaft.
Of course, spinning the cold engine with ease did not work, friends helped the author, turning the flywheel a little. After some time, the brushcutter was able to spin the flywheel to a rather high speed and the tractor started up. The braid’s warm tractor engine spins without assistance!
So now you know how much torque the brushcutter can deliver through a similar gearbox!
Similar gearboxes are in China