Fixing the Trigger Handle (Premium 7-Function Spray Gun & Premium Metal Trigger Nozzle)

If your spray gun trigger becomes floppy or loses resistance it is due to the internal O rings on the stainless steel plunger drying out. Take these steps to lubricate the plunger and restore proper function to your spray gun.

• Use pliers to unscrew the brass cap at the back of the sprayer.
• Remove the spring.
• Push the plunger from the trigger side then grip with pliers from the back to fully remove it.
• Clean out any debris or build up inside the trigger well.
• Spread a few drops of silicone oil into the cavity and around the O rings of plunger.
• Replace plunger, spring and brass cap in reverse order.
• Pump the trigger until it is fully operational.

Handy Hint: Periodically lubricating the plunger will keep it operating smoothly. Simply drop some silicone oil onto the silver plunger under the trigger and pump the handle to distribute it.

Important: Use only silicone oil from Hoselink or any hardware store (not water-based WD-40). Buy silicone oil here.

 

Fixing Leaking

If leaking occurs from behind the function selector dial, first try tightening the screw on the face in case it is loose. If that fails, follow these steps to repair your spray gun.

• Use a Phillips-head screwdriver to remove the front face of the spray gun. Be careful not to lose the small white-tipped spring.
• Remove the O ring (use a pin if necessary) and replace with a new one.
• Spread some silicone oil lubricant around the O ring and surrounding area.
• Replace the face of the spray gun and tighten the screw.

Buy spray gun repair kit here.