DeWalt DH4240B Instruction Manual page 13

WARNING: Flying objects could cause risk of serious injury. DO
NOT attempt to change nozzles while pressure washer is running.
Turn engine off before changing nozzles.
1. Pull quick­connect coupler back and insert
nozzle.
2. Release quick­connect coupler and
twist nozzle to make sure it is secure in
coupler.
WARNING: Flying object could cause risk
of serious injury. Ensure nozzle is completely
inserted in quick-connect socket and quick-
connect snap ring is fully engaged (forward)
before squeezing gun trigger.
Chemicals and Cleaning Solvents
Applying chemicals or cleaning solvents is a low-pressure operation.
note: Use only soaps and chemicals designed for pressure washer
use. Do not use bleach.
to aPPLY cHeMIcaLs anD soLVents
1. Press chemical hose (S) onto barbed fitting
located near high pressure hose connection
of pump as shown.
2. Place the other end of chemical hose with
filter on it into the container holding chemi-
cal/cleaning solution.
note: For every 10 gallons (38 liters) of
water pumped 1 gallon (3.8 liters) of chemi-
cal/cleaning solution will be used.
3. Install low­pressure (black) nozzle into quick connect fitting of spray
wand, refer to spray Wand nozzles. note: Chemicals and soaps
will not siphon if the black soap nozzle is not installed on the
spray wand.
4. After use of chemicals, place chemical hose into container of clean
water and draw clean water through chemical injection system
to rinse system thoroughly. If chemicals remain in the pump it
could be damaged. Pumps damaged due to chemicals will not be
covered under warranty.
Starting
WARNING: To reduce the risk of injury, read the pressure washer
instruction manual and the engine instruction manual before starting
pressure washer.
DANGER: Risk of fluid injection and laceration. When using the
high-pressure setting, DO NOT allow the high-pressure spray to
come in contact with unprotected skin, eyes, or with any pets or
animals. Serious injury will occur.
• Your washer operates at fluid pressures and velocities high
enough to penetrate human and animal flesh, which could result
in amputation or other serious injury. Leaks caused by loose fit-
tings or worn or damaged hoses can result in injection injuries.
DO NOT TREAT FLUID INJECTION AS A SIMPLE CUT! See a
physician immediately!
WARNING: Risk of fire, asphyxiation and burning. NEVER fill fuel
tank when engine is running or hot. Do not smoke when filling fuel
S
tank.
• NEvER fill fuel tank completely. Fill tank to 1/2" (12.7 mm) below
bottom of filler neck to provide space for fuel expansion. Wipe any
fuel spillage from engine and equipment before starting engine.
• NEvER run engine in doors or in en closed, poorly ven ti lat ed
areas. Engine exhaust contains carbon monoxide, an odorless
and deadly gas.
• DO NOT let hoses come in contact with very hot engine
muffler during or immediately after use of your pressure
washer. Damage to hoses from contact with hot engine
surfaces will NOT be covered by warranty.
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