Changing from Stylus to Chisel

Loosen the cylinder sleeve from the inlet and the cylinder assembly (right-hand thread).

Remove the inlet and the cylinder assembly from the sleeve. Avoid damaging the O-ring.

Get the stylus out of the cylinder sleeve.

Make sure that the two O-rings are assembled under the shoulder of the anvil.

Drop the anvil into the cylinder sleeve (small end down). Shake the sleeve until the small end of the anvil enters the hole at the bottom of the sleeve.