Displacement pump operates, but output is low on down stroke and/or both strokes.
To avoid serious injury follow all warnings and instructions in the manual. Wear appropriate personal protective equipment.
- Tighten packing nut.
- Replace piston packings and piston if necessary.
- Clean the check valve.
- Service the intake valve ball check.
- Tighten clamps on the rubber elbow.
- Clean the fluid hose on the applicator.