• unscrew the operating lever from inside
• slide the inside barrel to take it out
• dry carefully the barrel and the inside of the mouth piece
• Put a thin film of grease on the outside of the spool, and the inside surface of the DSV
bodybarrel
• Slide the spool into the DSV body paying attention to its position (hole of the operating
lever, evacuation hole)
• compress and install the snap rings inside the groove on spool
• screw the operating lever from inside, be carefull about the o-ring.
• install back the valve seats
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