Craftsman 919.763010 Manual Del Propietário página 15

SYMPTOM CAUSE SOLUTION
Engine won't 1. Engine throttle is in "OFF" Position. 1. Slide throttle to "Rabbit" position.
start 2. Choke lever has not been placed to 2. Slide choke lever to choke position.
choke.
3. Pressure buildup after initial use. Depress trigger gun.
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 oil (oil
milky).
Water dripping
from pump
Oil Dripping
1. 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,
3.
4.
5.
1.
2.
3.
4.
5.
6.
Nozzle is in low PSI position.
Nozzle incorrect or worn.
Pump sucking air.
Nozzle blocked.
Pump sucking air.
Garden hose inlet strainer clogged.
Worn Seals or Packing.
Inadequate water supply.
Fouled or dirty inlet or discharge
valves.
Leaky discharge hose.
1. Nozzle clogged, partially obstructed.
2. Nozzle worn.
3. Pump Valves worn, dirty or stuck.
4. Worn pump piston packing.
1,
2. Pump sucking air.
3. Valves dirty or worn.
4. Worn bearings.
1.
2.
1.
2,
3.
4.
1.
2.
3.
1. Place nozzle to low pressure.
2. Check chemical screen; clean if obstructed.
3. Make sure chemical screen is submerged in
chemical/water.
4. Check and clean.
5. Open chemical injector by turning adjustment
knob.
1. Check water supply and filter screen for.
blockage. Check hoses for blockage, kinks,
leaks, etc.
2. Twist handle for high pressure,
3. Check and replace.
4. Check that hoses and fittings are air-tight.
5. Clean nozzle.
1. 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, 145o F or above.
6. Clean inlet and discharge valve assemblies.
Replace if damaged.
1. Use nozzle cleaning kit to clear obstruction. (See
Nozzle Maintenance under Service Adjustment.)
2. Clean or replace,
3. Check and replace.
4. Check and replace.
Water too hot. 1.
2.
3.
4.
High humidity. 1.
Piston packing and oil seal worn. 2.
Thermal relief functioning normal. 1.
Fittings Loose.
O-rings of piston guide or retainer 2.
worn. 3.
Piston packing worn. 4.
Oil seal worn 1_
Loose drain plug or worn drain plug 2.
o-ring.
Reduce temperature below 63° C or 1450 F.
Check that hoses and fittings are air tight.
Check, clean or replace.
Check and replace if necessary,
Change Oil.
Check and replace oil seals.
Protecting pump, if not using pressure washer for
a long period of time, shutoff engine.
Tighten.
Check and replace.
Check and replace.
Check and replace
Tighten drain plug or replace O-ring. Do not over torque.
15