How to adjust the clearance of rear axle of mini-car?

There are two places to adjust the gap. First, it is the place where the tooth cone is connected with the transmission plate, and it is the place to adjust the front and rear clearance. The washer position between the bearing and the tooth cone increases the clearance, and vice versa. Two: the position of the planetary pinion can be adjusted, that is, two half shafts are inserted behind the head pinion and two pinion gears with keyways, but the gasket in this place is special and we can't make it ourselves. As for the gap, of course, the smaller the better, as long as there is no resistance when you turn by hand, this is what we say.