Traduciendo paso 3
Carefully replace the right half of the gearbox while holding down the cylinder. Again, make sure that all of the shims are in their original position, and that the gears, anti-reversal latch, and trigger all line up with their respective holes in the gearbox as you close it.
After the gearbox is closed, inspect it to ensure that everything is properly seated and that there is no gap between the halves. Reinstall the screws and the black cap behind the trigger.