If you have questions or comments, contact us. Pour toute question ou tout commentaire, nous contacter. Si tiene dudas o comentarios, contáctenos. 1-800-4-DEWALT • www.dewalt.com INSTRUCTION MANUAL GUIDE D'UTILISATION MANUAL DE INSTRUCCIONES DP3750 Pressure Washer Laveuse à pression Lavadora a presión INSTRUCTIVO DE OPERACIÓN, CENTROS DE SERVICIO Y PÓLIZA DE GARANTÍA. ADVERTENCIA: LÉASE ESTE INSTRUCTIVO ANTES DE USAR EL PRODUCTO.
FIG. 1 English DP3750 PRESSURE WASHER C P I. Engine dipstick/oil plug J. High-pressure pump K. Engine L. Choke control M. Starter grip N. Fuel valve lever O. Engine switch P. Gas cap Q. Throttle control lever A. Handle assemble B. Frame C. High-pressure hose D. Spray gun E. Quick-connect spray wand F. Panel assembly G. Nozzle holder H. High-pressure pump dipstick/oil plug F G D A K Q H L N M E J ENGINE Refer to the engine instruction manual for location and operation of other engine controls.
Definitions: Safety Guidelines The definitions below describe the level of severity for each signal word. Please read the manual and pay attention to these symbols. DANGER: Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
English • Muffler exhaust heat can damage painted surfaces, melt any material sensitive to heat (such as siding, plastic, rubber, vinyl or the pressure hose, itself), and damage live plants. DANGER: RISK OF EXPLOSION OR FIRE WHAT CAN HAPPEN HOW TO PREVENT IT • Shut off engine and allow • Spilled gasoline and it’s it to cool before adding fuel vapors can become ignited to the tank. from cigarette sparks, electrical arcing, exhaust • Use care in filling tank to gases and hot engine avoid spilling fuel.
RISK TO BREATHING (ASPHYXIATION) CONTINUED • Use only cleaning fluids specifically recommended for high-pressure washers. Follow manufacturers recommendations. Do not use chlorine bleach or any other corrosive compound. DANGER: RISK OF FLUID INJECTION AND LACERATION WHAT CAN HAPPEN • Injuries can result if system pressure is not reduced before attempting maintenance or disassembly. HOW TO PREVENT IT • Your pressure washer • Inspect the high-pressure operates at fluid pressures hose regularly.
English DANGER: RISK OF INJURY FROM SPRAY WHAT CAN HAPPEN HOW TO PREVENT IT • High-velocity fluid spray • Always wear ANSI-approved can cause objects to break, Z87.1 safety glasses. Wear propelling particles at high protective clothing to protect speed. against accidental spraying. • Never point wand at or spray people or animals. • Light or unsecured objects can become hazardous projectiles.
• If engine does not start after two pulls, squeeze trigger of gun to relieve pump pressure. Pull starter cord slowly until resistance is felt. Then pull cord rapidly to avoid kickback and prevent hand or arm injury. • The spray gun/wand is a powerful cleaning tool that could look like a toy to a child. • Keep children away from the pressure washer at all times. • Reactive force of spray will cause gun/wand to kickback, and could cause the operator to slip or fall or misdirect the spray.
English WARNING: RISK OF BURSTING WHAT CAN HAPPEN • Over inflation of tires could result in serious injury and property damage. WARNING: RISK OF HOT SURFACES HOW TO PREVENT IT • 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.
WARNING: RISK OF ELECTRICAL SHOCK WHAT CAN HAPPEN HOW TO PREVENT IT • Unplug any electrically • Spray directed at electrical outlets or switches, or objects operated product before connected to an electrical attempting to clean it. Direct circuit, could result in a spray away from electric fatal electrical shock. outlets and switches. 4. Place the nozzle holder (G) onto the panel assembly (F) and push each nozzle holder into place. 5.
English 7. Remove dipstick/oil plug (H) from plastic bag and install into pump, tighten securely. H NOTE: The shipping plug must be removed and replaced with the dipstick/oil plug before operating pressure washer. WARNING: Risk of bursting. 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.
CHANGING NOZZLES ON SPRAY WAND DANGER: Risk of fluid injection. Do not direct discharge stream toward persons, unprotected skin, eyes or any pets or animals. Serious injury will occur. 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 quick-connect coupler back and insert nozzle. 2. Release quick-connect coupler and twist nozzle to make sure it is secure in coupler.
English 2. Check engine oil level. Refer to the engine instruction manual for correct procedure. 3. Connect the water hose to the water source. Turn the water source on to remove all air from the hose. When a steady stream of water is present, turn the water source off. 4. Verify the filter screen (U) is in water inlet of pump. The cone side faces out. 5. Connect the cold water source (V) to pump inlet. NOTE: Water source must provide a minimum of U 5 gallons per minute at 20 PSI. 6.
If the pressure washer is used in unusual conditions, such as high temperatures or dusty conditions, more frequent maintenance checks will be required. W Engine Consult the engine instruction manual for the manufacturer's recommendations for any and all maintenance. NOTE: The pressure washer frame is equipped with an oil drain hole to help make changing the engine oil easier. Shutting Down 1.
3. Reinsert filter into water inlet of pump. Cone side faces out. NOTE: Do not operate pressure washer without filter properly installed. English Nozzle Cleaning If the nozzle becomes clogged with foreign materials, such as dirt, excessive pressure may develop. If the nozzle becomes partially clogged or restricted, the pump pressure will pulsate. Clean the nozzle immediately using the nozzle kit supplied and the following instructions: 1. Shut off the pressure washer and turn off the water supply. 2.
CAUTION: Risk of property damage. Use only RV antifreeze. Any other antifreeze is corrosive and can damage pump. 2. Disconnect spark plug wire. 3. Connect length of garden hose to water inlet of pump. 4. Add RV antifreeze or windshield washer fluid to hose as shown. 5. Pull engine starter rope slowly several times until antifreeze/ washer fluid comes out of highpressure hose connection of pump. 6. Remove garden hose from water inlet of pump. 7. Reconnect spark plug wire.
English LATIN AMERICA: This warranty does not apply to products sold in Latin America. For products sold in Latin America, see country specific warranty information contained either in the packaging, call the local company or see website for warranty information. RECONDITIONED PRODUCT: Reconditioned product is covered under the 1 Year Free Service Warranty. The 90 Day Money Back Guarantee and the Three Year Limited Warranty do not apply to reconditioned product.
Glossary 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. (GPM x PSI = CU) Fuel valve lever: Opens/closes connection between fuel tank and carburetor. GPM: Gallons Per Minute. The unit of measure for the flow rate of water.
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 DEWALT technician or your dealer. Problem Code Engine will not start ......................................................................................................
Troubleshooting Codes CODE POSSIBLE SOLUTION No fuel. Add fuel. 2 Low oil. Add required amount of oil. 3 Pressure builds up after two pulls on the recoil starter or after initial use. Squeeze gun trigger to relieve pressure. 4 Choke lever in the NO CHOKE position. Move choke to the CHOKE position. 5 Spark plug wire not attached. Attach spark plug wire. 6 Engine ON/OFF switch in OFF position. Place engine ON/OFF switch in ON position.
(Troubleshooting Codes cont.) English CODE POSSIBLE CAUSE POSSIBLE SOLUTION 17 Spray wand not in low pressure. See Spray Wand Nozzles under Operation. 18 Chemical filter clogged. Clean filter. 19 Chemical screen not in cleaning solution. Make sure end of chemical hose is fully submerged into cleaning solution. 20 Chemical too thick. Dilute chemical. Chemical should be the same consistency as water. 21 Worn seal or packing. Have parts cleaned or replaced by authorized service center.
CÓDIGO CAUSA POSIBLE SOLUCIÓN POSIBLE 33 Bomba llena en exceso. Verifique la cantidad correcta. 34 Aceite incorrecto. Drene y llene con la cantidad y el tipo correctos de aceite. 35 Tapón de goma obstruido. Limpie el orificio de ventilación. Elimine la obstrucción con presión de aire. Si el problema persiste, cambie el tapón.
DEWALT Industrial Tool Co., 701 Joppa Road, Baltimore, MD 21286 Copyright © 2005 DEWALT DP3750 Form No. A13885 (NOV05) The following are trademarks for one or more DEWALT power tools: the yellow and black color scheme; the “D” shaped air intake grill; the array of pyramids on the handgrip; the kit box configuration; and the array of lozenge-shaped humps on the surface of the tool.
