Cleaning Detergent Siphoning Tube; Pressure Washer Rinsing; Automatic Cool Down System - Craftsman 580.676640 Owner's Manual

To apply detergent, follow these steps:
1. Review use of adjustable nozzle.
2. Prepare detergent solution as required by job.
3. Place filter end of detergent siphoning tube into
detergent container.
CAUTION
Keep the chemical injection tube from coming in
contact with the hot muffler.
• When inserting the filter into a detergent solution bottle,
route the tube so as to keep it from inadvertently
contacting the hot muffler.
4. Slide adjustable nozzle forward to low pressure
mode. Detergent cannot be applied with nozzle in
high pressure position.
5. Make sure garden hose is connected to water
inlet. Check that high pressure hose is connected
to spray gun and pump. Start engine.
6. Apply detergent to a dry surface, starting from
bottom and working up.
7. Allow detergent to "soak in" for 3-5 minutes before
rinsing. Reapply as needed to prevent surface
from drying.
8. For washing, start at lower portion of area to be
washed and work upward, using long, even,
overlapping strokes.
IMPORTANT: You must flush the chemical injection
system after each use by placing the filter into a clean
bucket of water and running the pressure washer in
low pressure for 1-2 minutes.

Pressure Washer Rinsing

For Rinsing:
1. Slide nozzle backward to high pressure, press
trigger and wait for detergent to clear.
NOTE: You can also stop detergent flow by removing
detergent siphoning tube from container.
2. Keep spray gun a safe distance from area you
plan to spray.
WARNING
High pressure spray could cause you to fall
if you are too close to the cleaning surface.
• Keep spray nozzle between 8 to 24 inches away from
cleaning surface.
• Operate this unit on a stable surface.
• Be extremely careful if you must use the pressure
washer from a ladder, scaffolding or any other relatively
unstable location.
• Firmly grasp spray gun with both hands when using high
pressure spray to avoid injury if gun kicks back.
3. Apply a high pressure spray to a small area, then
check surface for damage. If no damage is found,
it is okay to continue cleaning.
4. Start at top of area to be rinsed, working down
with same overlapping strokes as you used for
washing and applying detergent.

Cleaning Detergent Siphoning Tube

If you used the detergent siphoning tube, you must
flush it with clean water before stopping the engine.
1. Place chemical injection siphon/filter in a bucket
full of clean water.
2. Slide adjustable nozzle forward to low pressure
position.
3. Flush for 1-2 minutes.
4. Shut off engine.
IMPORTANT: Simply shutting OFF engine will not
release pressure in the system. When the engine has
shut down, squeeze the trigger on the spray gun
to relieve the pressure in the hose.

Automatic Cool Down System

(Thermal Relief)
If you run the engine on your pressure washer for
3-5 minutes without pressing the trigger on the spray
gun, circulating water in the pump can reach
temperatures above 125°F (51°C). The system
engages to cool the pump by discharging the warm
water onto the ground.
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