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SYMPTOM
Engine won't
start
Won't Draw
Chemical
Pump running
normally but
pressure does
not achieve
rated values
Fluctuating
Pressure
Pressure drops
after period of
normal use
Pump noisy
Presence of
water in oi_(oi!
milky),
Water dripping
from pump
O _
-.._ Dripping
CAUSE
1. Engine throttle is in "OFF" Position.
2. Choke lever has not been placed to
choke.
3. Pressure buildup after initial use.
l. Nozzle not in chemical draw position.
2. Chemical screen is obstructed.
3. Chemical screen not working.
4. Chemical injector orifice obstructed
or stuck.
5. Chemical injector closed.
1. Water supply restricted.
2. Nozzle is in low PSi position.
3. Nozzle incorrect or worn.
4. Pump sucking air.
5. Nozzle blocked.
1. Pump sucking air.
2. Garden hose inlet strainer clogged.
3. Worn Seals or Packing.
4. Inadequate water supply.
5. Fouled or dirty inlet or discharge
valves.
6. Leaky discharge hose.
I. Nozzle clogged, partially obstructed.
2.
3.
4.
t,
2.
3.
4.
I.
2.
2.
3.
1.
2.
3.
4.
5.
SOLUTION
S_ide thro_te to "Rabbit" position.
Slide choke tever to choke position°
Depress trigger gun.
Place nozzle to low pressure.
Check chemical screen; clean if obstructed.
Make sure chemical screen is submerged in
chemical/water.
Check and clean.
Open chemical injector by turning adjustment
knob.
t. Check water supply and filter screen for.
blockage. Check hoses for btockage_ kinks,
leaks, etc.
2. Twist nozzle at end of wand clockwise the high
pressure poskion.
3. Check and replace.
4. Check that hoses and fittings are air-tight.
5. Clean nozzle.
t. Check that hoses and fittings are air tight. Purge air
from garden hose.
2. Clean. Check filter frequently.
3. Check and replace.
4. Check hose for kinks.
5. Check flow available to pump. Check for
excessive heat, 145° F or above.
6. Clean inlet and discharge valve assemblies.
Replace if damaged.
1.
Nozzle worn. 2.
Pump Valves worn, dirty or stuck. 3.
Worn pump piston packing. 4.
Water too hot. !.
Pump sucking air. 2.
Valves dirty or worn. 3.
Worn bearings. 4.
High humidity. 1.
Piston packing and oil seal worn. I 2.
Use nozzle cleaning kit to clear obstruction. (See
Nozzle Maintenance under Service Adjustment.)
Clean or replace.
Check and replace.
Check and replace.
Reduce temperature below 63° C or 145 o F.
Check that hoses and fittings are air tight.
Check, clean or replace°
Check and replace if necessary.
Change Qi!.
Check and replace oil seats_
1. Thermat relief functioning normal.
2. FiRings Loose.
3. O-rings of piston guide or retainer
worn,
4. Piston packing worn.
1. Oi{seai worn
2. Loose drain plug or worn drain plug
o-dng°
1. Protecting pump, if not using pressure washer for
a long period of time. shutoff engine.
2. Tighten°
3. Check and replace.
4. Check and rep}ace_
i. Check and replace
2. Tighten drain plug orreplaceO-ring. Do not over torque.
16