|Pump fails to produce pressure, has erratic pressure, or has a loss of pressure or low water volume.
||Is the engine running at
||Move the throttle control to the FAST
|Is the nozzle in low pressure mode?
||Straighten the garden hose, or patch the leak.
|Is the water inlet blocked
or water-inlet filter screen clogged or damaged?
||Disconnect the garden hose from the water inlet; clean the water inlet and filter screen. If screen is damaged, remove damaged screen, insert new screen.
|Is the high-pressure hose leaking?
|| Check the O-rings. If damaged, pry off old O-ring with a small flathead screwdriver, and replace with new one.
|Is the in-line filter screen clogged or damaged?
||Disconnect the high-pressure hose from the spray gun; remove the in-line filter screen; clean by flushing with clear water. If damaged, replace filter and O-ring.
|Is the spray gun leaking?
||Replace the spray gun with a new one.
|Is the nozzle orifice obstructed?
||Shut off the engine; purge air from the pump; remove the orifice from the adjustable nozzle or remove the spray tip from the nozzle extension; clean the orifice or spray tip using the wire tool from the maintenance kit.
|Is the supply water temperature over 100° F?
||Provide a cooler water supply.
|Is the supply water pressure and flow rate adequate? (Supplying a minimum of 20 PSI and 1 GPM more than the GPM rating of the unit?)
||Test the supply water using a pressure/flow-rate gauge. If the supply water does not produce a minimum of 20 PSI and 3.5 GPM, provide an adequate water supply.
|Is the pump oil level low?
||Add oil to the pump.
|Is the pump faulty?
||Contact Briggs & Stratton service dealer.
|Is the nozzle in high-pressure mode?
|| Push the adjustable nozzle forward for low-pressure mode, or install the low-pressure (black) spray tip.