Troubleshooting – Craftsman 919.670280 User Manual
Page 16
Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".
TROUBLESHOOTING
SYMPTOM
CAUSE
SOLUTION
Engine won’t
1. Engine throttle is in "OFF" Position.
1. Slide throttle to "Bun" 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
Chemical
1. Adjustment knob on soap nozzle is
turned fully clockwise for less soap (-).
1. Turn knob counterclockwise for more soap (+).
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.
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, Adjustment knob on soap nozzle is
turned fully clockwise for less soap (-).
2. Turn knob counterclockwise for more soap (+).
3. Nozzle incorrect or worn.
3. Check and replace.
4. Pump sucking air.
4, Check that hoses and fittings are airtight.
5. Nozzle blocked.
5. Clean nozzle.
Fluctuating
Pressure
1. Pump sucking air.
1. Check that hoses and fittings are airtight. 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. Check connection. Replace if cracked or
punctured.
normal use
2. Nozzle worn.
2. Clean or replace.
3, Valves worn, dirty or stuck.
3. Check and replace.
4. Worn 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 airtight.
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. Fittings Loose.
1. Tighten.
from pump
2. O-rings of piston guide or retainer
worn.
2. Check and replace.
3. Piston packing worn.
3, 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
.
o-ring.
torque.
□20590 Rev. 0
3/15/00
16-ENG