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11. Troubleshooting
11.1 Low Pressure
• Check number of nozzles – too many will lower pressure and cause the pump to
work too hard.
• Leak in line on discharge side: inspect all nozzles, lines and fittings for leaks.
• Insufficient supply of water: increase flow of supply line and check water filter.
• Fouled or dirty inlet or discharge valves: clean inlet and discharge valve
assemblies.
• Worn inlet, discharge valve blocked or dirty: replace worn valves, valve seats
and/or discharge hose.
• If nothing else works – Unloader valve not properly adjusted: increase pressure
by turning unloader clockwise.
11.2 Water continues to run through pump after pump is turned off
• Contaminant lodged in solenoid valve: remove solenoid and plunger and dislodge
any foreign matter. Disconnect power. Inlet solenoid valve is located near the inlet
where water first comes into the unit. The first solenoid valve stops water from
coming when the power is off.
• Remove the upper electrical magneto by sliding the C-clip sideways and lifting off
the stem the entire unit. Tap on the solenoid lightly with a wrench. Disconnect
the hose pressure and squirt water inside to remove dirt. Place magneto back on
with C-clip and try again.
11.3 Pump stops running
• Overloading the circuit: confirm that pump is plugged into a dedicated circuit and
has sufficient amperage. Also be certain that sufficient water pressure is
available. Use a minimum ¾” hose (19 mm) with at least 40 PSI (2.8 bar) of clean
water.
11.4 Oil leaking around pump
• Drain cap loosened: tighten drain cap with 9/16 wrench.
• Red dipstick loosened: tighten dipstick hand tight.
• Seals possibly leaking. No oil breather plug.
11.5 Pulsation
• Valve stuck open: check all valves, remove foreign matter and reassemble.
• Belt slippage: tighten or replace, use correct belt.
11.6 Water leakage from under manifold
• Worn packing, cracked plunger: install new packing or replace plungers. (Factory
authorized dealer.)
11.7 Water in crankcase (looks like bubbles, or milky color)
• May be caused by humid air condensing into water inside the crankcase: shorten
oil-change intervals, replace O-rings.
• Be sure breather oil cap is being used.
