Craftsman 919.762350 - Manual (Page 15)

TROUBLESHOOTING
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
choke.
2. Slide choke lever to choke position.
3. Pressure buildup after initial use. 3. Depress trigger gun.
Won’t Draw 1. Nozzle not in chemical draw position. 1. Place nozzle to low pressure.
Chemical 2. Chemical screen is obstructed. 2. Check chemical screen; clean if obstructed.
3. Chemical screen not working. 3. Make sure chemical screen is submerged in
chemical/water.
4. Chemical injector orifice obstructed
or stuck.
4. Check and clean.
5. Chemical injector closed. 5. Open chemical injector by turning adjustment
knob.
Pump running
normally but
pressure does 1. Water supply restricted. 1. Check water supply and filter screen for.
blockage. Check hoses for blockage, kinks,
leaks, etc.
not achieve
rated values 2. Nozzle is in low PSI position. 2. Pull nozzle at end of wand back to the high pressure
position.
3. Nozzle incorrect or worn. 3. Check and replace.
4. Pump sucking air. 4. Check that hoses and fittings are air-tight.
5. Nozzle blocked. 5. Clean nozzle.
Fluctuating
Pressure 1. Pump sucking air. 1. Check that hoses and fittings are air tight. Purge air
from garden hose.
2. Garden hose inlet strainer clogged. 2. Clean. Check filter frequently.
3. Worn Seals or Packing. 3. Check and replace.
4. Inadequate water supply. 4. Check hose for kinks.
5. Fouled or dirty inlet or discharge
valves.
5. Check flow available to pump. Check for
excessive heat, 145° F or above.
6. Leaky discharge hose. 6. Clean inlet and discharge valve assemblies.
Replace if damaged.
Pressure drops
after period of
1. Nozzle clogged, partially obstructed. 1. Use nozzle cleaning kit to clear obstruction. (See
Nozzle Maintenance under Service Adjustment.)
normal use 2. Nozzle worn. 2. Clean or replace.
3. Pump Valves worn, dirty or stuck. 3. Check and replace.
4. Worn pump piston packing. 4. Check and replace.
Pump noisy 1. Water too hot. 1. Reduce temperature below 63° C or 145° F.
2. Pump sucking air. 2. Check that hoses and fittings are air tight.
3. Valves dirty or worn. 3. Check, clean or replace.
4. Worn bearings. 4. Check and replace if necessary.
Presence of 1. High humidity. 1. Change Oil.
water in oil (oil
milky).
2. Piston packing and oil seal worn. 2. Check and replace oil seals.
Water dripping 1. Thermal relief functioning normal. 1. Protecting pump, if not using pressure washer for
from pump 2. Fittings Loose. a long period of time, shutoff engine.
3. 0-rings of piston guide or retainer 2. Tighten.
worn. 3. Check and replace.
4. Piston packing worn. 4. Check and replace.
Oil Dripping 1. Oil seal worn 1. Check and replace
2. Loose drain plug or worn drain plug 2. Tighten drain plug or replace O-ring. Do not over torque.
o-ring.
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