BEST BST-018 Suction Pump Desoldering Pump Pen Sloder Sucker (Black)

•Push the set-knob until it stops and then take down the nozzle;

•Stuff the nozzle tinht cylinder holder,then press it gently toward the holder

•Grasp the cylinder and shaft holder,then turn it anti-clock wise,pull and remove

•Clean the piston and the inner cylinder with a brush,then oil them;

•Be careful to examine and replace the nozzle if necessary since it may be too hot while cause damage