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FIG. 1 English DH4240B Pressure Washer A. Panel assembly B. Nozzle Grommets C. Professional Spray gun D. Wheel E. Quick-connect spray wand F. Frame G. Engine dipstick/oil plug H. Engine switch a I. Starter grip J. Engine K. Throttle control lever L. Choke control M. Fuel valve lever N. Gas cap O. Handle assembly P. High-pressure hose Q. High-pressure pump B C N q P E Engine Refer to the engine instruction manual for location and operation of other engine controls.
Specifications WEIGHT DH4240B 145 lbs HEIGHT WIDTH Length 25.5" 28" 45" PSI Max* 4200 (29,958 kPa) AVERAGE GPM Max* Operating PSI 4100 4.0 (28,269 kPa) (15.4 L/min) AVERAGE Operating GPM 3.9 (14.7L/min) Engine HONDA 389 cc OHV * Maximum PSI and GPM ratings determined in accordance with the Pressure Washers Manufacturers Association (PWMA) standard PW101 Important Safety Instructions Definitions: Safety Guidelines DANGER: Carbon Monoxide. Using an engine indoors can kill you in minutes.
English Forest Service land and may also be legally required under other statutes and ordinances. WARNING: This product and its exhaust contain chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. In addition, some cleaning products and dust contain chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling.
• Improperly stored fuel could lead to accidental ignition. Fuel improperly secured could get into the hands of children or other unqualified persons. • Use of acids, toxic or corrosive chemicals, poisons, insecticides, or any kind of flammable solvent with this product could result in serious injury or death. • Never operate pressure washer in an area containing dry brush or weeds.
English DANGER: RISK of FLUID INJECTION and Laceration What can happen How to prevent it • Your pressure washer • Inspect the high-pressure operates at fluid pressures hose regularly. Replace and velocities high enough the hose immediately if it is to penetrate human and damaged, worn, has melted animal flesh, which could from contacting the engine, result in amputation or or shows any signs of other serious injury. Leaks cracks, bubbles, pinholes, or caused by loose fittings or other leakage.
English Danger: RISK of unsafe operation What can happen How to prevent it • Unsafe operation of your • Do not use chlorine pressure washer could lead bleach or any other to serious injury or death to corrosive compound. you or others. • Become familiar with the operation and controls of the pressure washer. • Keep operating area clear of all persons, pets and obstacles. • Do not operate the product when fatigued or under the influence of alcohol or drugs. Stay alert at all times.
English • If proper starting procedure is not followed, engine can kickback causing serious hand and arm injury. • The spray gun/wand is a powerful cleaning tool that could look like a toy to a child. • Reactive force of spray will cause gun/wand to kickback, and could cause the operator to slip or fall or misdirect the spray. Improper control of gun/ wand can result in injuries to self and others. • If engine does not start after two pulls, squeeze trigger of gun to relieve pump pressure.
WARNING: RISK of Bursting What can happen How to prevent it • Over inflation of tires could result in serious injury and property damage. • Use a tire pressure gauge to check the tires pressure before each use and while inflating tires; see the tire sidewall for the correct tire pressure. NOTE: Air tanks, compressors and similar equipment used to inflate tires can fill small tires similar to these very rapidly. Adjust pressure regulator on air supply to no more than the rating of the tire pressure.
English WARNING: RISK OF electrical Shock What can happen How to prevent it • Spray directed at electri • Unplug any electrically cal outlets or switches, or operated product before objects connected to an attempting to clean it. Direct electrical circuit, could spray away from electric result in a outlets and switches. fatal electrical shock.
5. Attach high-pressure hose (P) to spray gun. Make sure it is secure. p 6. Connect wand (E) to spray gun. Make sure e connection is secure. 7. Place the grommets (B) onto the panel assembly (A) and push into place. B A 8. Remove the five colored quick-connect nozzles from the plastic bag and insert them into correct grommet on the nozzle holder. Nozzles are color coded to match colored nozzles on panel assembly. NOTE: The high-pressure pump was filled with oil at the factory.
English 9. The pressure washer is now ready for handling. Make sure to follow the Owner’s Manual instructions before starting the pressure washer. The pressure setting is preset at the factory to achieve optimum pressure and cleaning. To lower the pressure, follow these instructions. 1. Back away from the surface to be cleaned. The further away you are, the less the pressure will be on the surface to be cleaned. 2. Change to the 40˚ nozzle (white).
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. S 2. Place the other end of chemical hose with filter on it into the container holding chemical/cleaning solution.
English NOTICE: Never pull water supply hose to move pressure washer. This could damage hose and/or pump inlet. • DO NOT use hot water, use cold water only. • Never turn water supply off while pressure washer engine is running or damage to pump will result. • DO NOT stop spraying water for more than two minutes at a time. Pump operates in bypass mode when spray gun trigger is not pressed.
WARNING: Risk of burning. When performing maintenance, you may be exposed to hot surfaces, water pressure or moving parts that can cause serious injury or death. WARNING: Risk of fire. Always disconnect, spark plug wire, let the engine cool and release all water pressure before performing any maintenance or repair. The engine contains flammable fuel. Do not smoke or work near open flames while performing maintenance.
English How To Change BB Pump Oil 1. Loosen pump dipstick/oil plug (BB). AA 2. Place a container under the oil drain plug (CC). 3. Remove pump oil drain plug. CC 4. After oil is drained, replace oil drain plug. Tighten securely. 5. Remove pump dipstick/oil plug and fill with 30W non-detergent oil. 6. Replace pump dipstick/oil plug and tighten securely. 7. Reconnect spray wand to gun then turn on water supply. 8. Start pressure washer and place spray wand into high pressure setting to test.
3. Store chemical hose so it is protected from damage. Caution: Risk of personal injury. Avoid placing hands between handle and frame when assembling to prevent pinching. NOTICE: Risk of property damage. Always store and transport unit in an upright position. Accessories Recommended accessories for use with your tool are available for purchase from your local dealer or authorized service center. If you need assistance in locating any accessory for your tool, please contact the FNA Group at www.dewaltpw.
English Limited Warranty This pressure washer is warranted for three years from date of purchase. We will repair, without charge, any defects due to faulty materials or workmanship. This warranty does not cover parts that are damaged through misuse or abuse, or parts which must be replaced from time to time due to normal pressure washer operation. Normal wear parts include, but are not limited to, the engine air filter, spark plug, pump valve seals and O rings.
Glossary 19 English Bypass mode: Allows water to re-circulate within pump when the gun trigger is not pulled. Chemical hose: Feeds cleaning agents into the pump to mix with the water. Refer to Chemicals and Cleaning Solvents. Chemical injection system: Mixes cleaners or cleaning solvents with water to improve cleaning effectiveness. Choke control: Opens and closes carburetor choke valve. CU: Cleaning Units. GPM multiplied by psi.
English Troubleshooting Guide This section provides a list of the more frequently encountered malfunctions, their causes and corrective actions. The operator or maintenance personnel can perform some corrective actions, and others may require the assistance of a qualified FNA technician or your dealer. Problem Code Engine will not start .......................................................................................................
(Troubleshooting Codes cont.) Code POSSIBLE SOLUTION Fuel valve closed. Spray wand not in high pressure. Low water supply. Leak at high-pressure hose fitting. Nozzle obstructed. Water filter screen clogged. Air in hose. 15 16 Choke lever in the Choke position. High-pressure hose is too long. 17 Spray wand not in low pressure. Move the fuel valve lever to the Open position. See Spray Wand Nozzles under Operation. Water supply must be at least 5 GPM @ 20 psi (138 kPa). Repair leak.
(Troubleshooting Codes cont.) English Code possible cause POSSIBLE SOLUTION 29 30 Oil seals worn. Loose drain plug. Have replaced by authorized service center Tighten. 31 32 Worn drain plug o-ring Worn fill plug o-ring. Check and replace. Check and replace. 33 Pump overfilled. Check for correct amount. 34 35 Incorrect oil used. Vent plug is clogged. 36 Air filter filled with oil. Drain and fill with correct amount and type of oil.