Craftsman 919.762700 - Manual (Page 15)

TROUBLESHOOTING
i SYMPTOM CAUSE SOLUTION
Engine won’t
start
1. Engine throttle is in "OFF" Position.
2. Choke lever has not been placed to
choke.
3. Pressure buildup after initial use.
1. Slide throttle to "Rabbit" position.
2. Slide choke lever to choke position.
3. Depress trigger gun.
Won’t Draw
Chemical 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. 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.
Pump running
normally but
pressure does
not achieve
rated values
1. Water supply resfiicted.
A
2. Nozzle is in low PSI position.
3. Nozzle incorrect or worn.
4. Pump sucking air.
5. Nozzle blocked.
1. Check water supply and filter screen for.
blockage. Check hoses for blockage, kinks,
teaks, etc.
2. Pull nozzle at end of wand back to the high pressure
position.
3. Check and replace.
4. Check that hoses and fittings are air-tight.
5. Clean nozzle-
Fluctuating
1 Pressure
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.
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, 145^ F or above.
6. Clean inlet and discharge valve assemblies.
Replace if damaged.
Pressure drops
after period of
normal use 1. Nozzle clogged, partially obstructed.
2. Nozzle worn.
3. Pump Valves worn, dirty or stuck.
4. Worn pump piston packing.
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.
Pump noisy 1. Water too hot.
2. Pump sucking air.
3. Valves dirty or worn.
4. Worn bearings.
1. Reduce temperature below 63° C or 145° F.
2. Check that hoses and fittings sure air tight.
3. Check, clean or replace.
4. Check and replace if necessary.
Presence of
water in oil (oil
milky).
1. High humidity.
2. Piston packing and oil seal worn.
1. Change Oil.
2. Check and replace oil seals.
Water dripping
from pump
|i
1. Thermal relief functioning normal.
2. Fittings Loose.
3. 0-rings of piston guide or retainer
worn.
4. Piston packing worn.
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 replace.
Oil Dripping 1. Oil sea! worn
2. Loose drain plug or worn drain plug
o-rinq.
1. Check and replace
2. Tighten drain plug or replace 0-ring. Do not overtorque.
15