Safety: Unplug the machine and depressurize by squeezing the trigger with the pump off.

Disassemble trigger: Remove the screws holding the trigger housing on the hand tool or wand.
Clean valve: Soak the internal valve components in warm water to dissolve detergent build-up. Gently scrub with a soft brush.
Inspect spring and pivot: Replace any broken trigger return spring or bent pivot pin.
Lubricate O-rings: Lightly lubricate O-rings with a silicone-safe lubricant and reassemble.

Trigger on hand tool or wand is stiff or will not return

Possible Causes