Pulsar 4 Blue Spring EZ PULSAR4KHPEZ* UNLOADER BLOCK The cam (rotary) switch is

The cam (rotary) switch is used on pressure washers to control the operation of the electric pump motor and/or the burner motor

180 F Maximum

Shaft diameter: 3/4" hollow

Special forged brass oversized connecting rods

Pulsar 4 Blue Spring EZ PULSAR4KHPEZ* UNLOADER BLOCK The cam (rotary) switch isPulsar 4 Pressure Actuated Unloader Blue Spring Dual Bypass with EZ Start Valve 10. 5 GPM max 4000 psi max 194 deg f max 3 8" FPT in out and bypass Pressure point tip: Do not adjust this knob regularly. Set the unloader using a ball valve, whip hose and gauge to 200 psi above the operating pressure of the pump and leave it alone. Contant adjustment will cause premature failure and scoring of the shaft or possible damage to the head or manifold of the