Craftsman 580.752400 - Manual (Page 15)

Nozzle Maintenance
A pulsing sensation felt while squeezing the spray gun
trigger may be caused by excessive pump pressure.
The principal cause of excessive pump pressure is a
nozzle clogged or restricted with foreign materials,
such as dirt, etc. To correct the problem, immediately
clean the orifice following these instructions:
1. Shut off engine and turn off water supply.
2. Remove orifice from end of nozzle extension.
Separate nozzle extension from spray gun. Twist
nozzle clockwise to stream position. Using a 2mm
(5/64) alien wrench, remove orifice from end of
nozzle extension.
I
3,
4,
Remove in-line filter from other end of nozzle
extension.
Use a small paper clip to free any foreign material
clogging or restricting orifice.
■ ........... ................%
5,
Insert wire into orifice and turn back
and forth to clear obstruction.
Using a garden hose, remove additional debris by
back flushing water through nozzle extension.
Back flush between 30 to 60 seconds. Turn
adjustable nozzle extension to stream spray and
move nozzle from low to high while flushing.
6
.
7.
8
.
9 .
Reinstall orifice and in-line filter into nozzle
extension. DO NOT overtighten orifice with alien
wrench.
Reconnect nozzle extension to spray gun.
Reconnect water supply, turn on water, and start
engine.
Test pressure washer by operating with nozzle in
high and low positions.
0- Ring Maintenance
Purchase an O-Ring Repair Kit, item number
71-75116, at your local Sears or by calling
1- 800-366-PART or online at www.sears.com. It is not
included with the pressure washer. This kit includes
replacement o-rings, rubber washer and water inlet
filter. Refer to the instruction sheet provided in the kit
to service your unit’s o-rings.
Pymp Maintenance
Changing Pump Oil
Change oil every 50 hours or once yearly, whichever
occurs first.
NOTE: You must purchase a premeasured bottle of
pump oil, item number 190585GS, by calling
1-800-366-PART or online at vww.sears.com.
Change pump oil as follows;
1. Drain engine oil and fuel from pressure washer.
2. Use a 8mm alien wrench to remove black pump
oil cap between high pressure outlet and garden
hose inlet.
'f
Oil Cap
4.
5.
6
.
container until it drips slowly from pump.
Tilt pressure washer in opposite direction and
empty premeasured pump oil bottle into same
opening (a small funnel may be helpful).
Install black pump oil cap and tighten firmly.
Set pressure washer in upright position. Add fuel
and engine oil.
15