3100 PSI PRESSURE WASHER Model # PW31 bit.ly/WENvideo IMPORTANT: Your new tool has been engineered and manufactured to WEN’s highest standards for dependability, ease of operation, and operator safety. When properly cared for, this product will supply you years of rugged, trouble-free performance. Pay close attention to the rules for safe operation, warnings, and cautions. If you use your tool properly and for intended purpose, you will enjoy years of safe, reliable service.
TABLE OF CONTENTS Pressure Washer Identification Service Record Introduction Safety Information General Safety Procedures Important Safety Instructions Pressure washer Components Pressure washer Preperation Operation Maintenance & Care Storage & Transport Specifications Troubleshooting Exploded View and Parts List Warranty Statement 2 3 3 4 4 5 6 7 8 12 15 19 20 21 22 26
PRESSURE WASHER IDENTIFICATION If assistance for information or service is required, please contact the Customer Service Help Line by calling 800-232-1195; customer will be asked to provide pressure washer information when calling. Refer to the illustration below for the location of the serial number. Record pressure washer information in the spaces provided below.
INTRODUCTION Thank You for Purchasing a WEN® Pressure Washer. This manual provides information regarding the safe operation and maintenance of this product. Every effort has been made to ensure the accuracy of the information in this manual. WEN® reserves the right to change this product and specifications at any time without prior notice. Please keep this manual available to all users during the entire life of the pressure washer.
GENERAL SAFETY PROCEDURES For any questions regarding the hazard and safety notices listed in this manual or on the product, please call (800)-232-1195 M-F 8-5 CST before using the pressure washer. DANGER: CARBON MONOXIDE Using a pressure washer indoors CAN KILL YOU IN MINUTES. Pressure washer exhaust contains carbon monoxide (CO). This is a poison gas you cannot see or smell. If you can smell the pressure washer exhaust, you are breathing CO.
GENERAL SAFETY PROCEDURES WARNING: This pressure washer produces heat when running. Temperatures near exhaust can exceed 1500 F (650 C). Do not touch hot surfaces. Pay attention to warning labels on the pressure washer identifying hot parts of the machine. Allow pressure washer to cool down after use before touching the engine or areas of the pressure washer that become hot during operation. CAUTION: Misuse of this pressure washer can damage it and shorten its life.
PRESSURE WASHER COMPONENTS Use the illustrations below to become familiar with the locations and functions of the various components and controls of this pressure washer.
PRESSURE WASHER PREPARATION PACKING LIST • Pressure washer • Quick start guide • Operator’s manual and product registration card • Engine manual • Spray gun • Extension wand with quick-connect fitting • High pressure hose • Spray nozzles (5) - 0°, 15°, 25°, 40° and soap nozzle • Spray gun hook (upper) • Spray gun hook (lower) • Accessory hook • Foot (1) • 4-Cycle engine oil (SAE10W30) • Nozzle cleaner WARNING: Do not attempt to assemble or operate this pressure washer until you have read and understood th
PRESSURE WASHER PREPARATION ATTACHING FOOT ASSEMBLY (Fig. 1) PARTS NEEDED: 1 foot, 1 M8 lock nuts. 1. Raise or tilt pressure washer so you can line up foot with the hole located at the centre of the frame. 2. Align the rubber foot with the hole in the frame where the foot is to be located. Attach foot by inserting the bolt from the bottom up and install the acorn nut. Wrench tighten until there is a slight crush on the frame tube. (Do not over tighten) Fig. 1 INSTALL HANDLE (Fig.
PRESSURE WASHER PREPARATION ATTACHING THE SPRAY GUN (Fig. 5 & 6) 1. Screw the spray wand and the trigger handle together until they are secure. 2. Insert the inlet coupler of the spray hose into the threaded fitting on the high pressure spray gun and thread the black nut on by turning clockwise until it is hand tight. Fig. 5 Fig. 6 ADD ENGINE OIL The pressure washer is shipped without oil. User must add the proper amount of oil before operating the pressure washer for the first time.
PRESSURE WASHER PREPARATION ADD GASOLINE WARNING: This pressure washer may emit highly flammable and explosive gasoline vapors, which can cause severe burns or even death if ignited. A nearby open flame can lead to explosion even if not directly in contact with gasoline. Use fresh (within 30 days from purchase), lead-free gasoline with a minimum of 87 octane rating. Do not mix oil with gasoline. To add gasoline, follow these steps: (Fig. 8) 1. Make sure the pressure washer is on a level surface. 2.
PRESSURE WASHER PREPARATION CONNECTING GARDEN HOSE TO PRESSURE WASHER (Fig. 9) 1. Run water through the hose for a few seconds to flush any debris from the hose. 2. Inspect the inlet screen and remove any debris. 3. Connect hose to water inlet and tighten by hand. There must be a minimum of 10 feet of unrestricted hose between pressure washer and faucet or shut off valve. Fig. 9 4. Turn on water. 5. Purge the system’s pump of air by releasing the safety and squeezing the trigger of the spray gun.
OPERATION STARTING PRESSURE WASHER (Fig. 11 & 12) 1. Place pressure washer on a level surface. Turn on water. 2. Purge the system’s pump of air by releasing the safety and squeezing the trigger of the spray gun. Attach wand/lance to spray gun. 3. Turn fuel valve to the ON position. 4. Slide the choke lever to the “Choke” position. Fig. 11 5. Turn the engine OFF/ON switch to the “ON” position. 6.
OPERATION USING THE SPRAY GUN (Fig. 14 & 15) Flip the lock tab behind the trigger up or down until it clicks to apply or remove the safety. Pull back on the trigger to begin operating pressure washer. To stop water flow, release trigger. Fig. 14 Fig. 15 USING SPRAY NOZZLE (Fig. 16) 1. To connect or disconnect spray tip, pull back on the quick-connect collar. Insert or remove spray tip then release the collar. 2. When spray tip is connected, pull on the spray tip to make sure it is secured. 3.
MAINTENANCE/CARE Proper routine maintenance of the pressure washer will help prolong the life of the machine. Please perform maintenance checks and operations according to the schedule in Fig. 17. If there are any questions about the maintenance procedures listed in this manual, please call: (800)-232-1195 M-F 8-5CT. CAUTION: Never perform maintenance operations while the pressure washer is running.
MAINTENANCE & CARE AFTER EACH USE Follow these procedures after each use: 1. Shut off engine and turn off water supply. Release water pressure by pointing spray gun in a safe direction and squeezing the trigger. 2. Disconnect high pressure hose, spray gun, and nozzle. Drain water from items and use a rag to wipe down the outside of the hose and spray gun. Fig. 18 - Oil Fill Opening, Dipstick and Oil Level 3. Empty the water from the pump by pulling the recoil starter 6 times. 4.
MAINTENANCE & CARE AIR CLEANER MAINTENANCE Routine maintenance of the air cleaner helps maintain proper airflow to the carburetor. Occasionally check that the air cleaner is free of excessive dirt. Refer to Recommended Maintenance Schedule in Fig. 17. 1. Unscrew the cover bolt, then remove the air cleaner cover. 2. Remove the air cleaner element from the casing. 3. Check and clean the air cleaner element. Replace with a new one if the element is damaged.
MAINTENANCE & CARE SPARK PLUG MAINTENANCE The spark plug is important for proper engine operation. A good spark plug should be intact, free of deposits, and properly gapped. Refer to Recommended Maintenance Schedule in Fig. 17. To inspect the spark plug: 1. Remove spark plug boot. Be careful not to tear insulation or wiring. 2. Unscrew the spark plug from the engine using the spark plug wrench provided. There is limited space for the wrench to turn.
MAINTENANCE & CARE SPRAY NOZZLE If a pulsing sensation is felt while squeezing the trigger, the spray nozzle may be dirty or clogged and should be cleaned immediately. To clean the nozzle: 1. Shut off the engine and turn off the water. 2. Remove the nozzle from the spray wand, making sure that the nozzle is pointing away from you and in a safe direction. 3. Use the nozzle cleaner or a small paper clip to dislodge any foreign materials which are clogging or restricting the spray tip.
SPECIFICATIONS Pressure Washer Max. Pressure Max. Flow Nozzles Gun to Lance Connection Gun to Hose Connection Lance Length Lance to Nozzle Connection Pump Detergent Tank Capacity Hose Diameter Hose Length Wheel Weight 3100 PSI 2.5 GPM - 3100 PSI 0°, 15°, 25°, 40°, Soap Nozzle M22 Threaded M22 Threaded 20” Stainless Quick Change Axial Cam 0.
TROUBLESHOOTING IMPORTANT: If trouble persists, please call our customer help line at (800) 232-1195 M-F 8-5 Central Time. Problem Cause Solution Engine switch is set to "OFF". Set engine switch to "ON". Fuel valve is turned to "OFF". Turn fuel valve to "ON" position. Choke is open. Close the choke Engine is out of fuel. Engine is filled with contaminated or old Engine will not start gasoline. Spark plug is dirty. Water pressure is weak Add gasoline. Change the gasoline in the gas tank.
EXPLODED VIEW AND PARTS LIST 22
EXPLODED VIEW AND PARTS LIST Item # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 28 29 30 31 32 33 34 36 37 38 39 40 41 Stock # PW31-001 PW31-002 PW31-003 PW31-004 PW31-005 PW31-006 PW31-007 PW31-008 PW31-009 PW31-010 PW31-011 PW31-012 PW31-013 PW31-014 PW31-015 PW31-016 PW31-017 PW31-018 PW31-019 PW31-020 PW31-021 PW31-022 PW31-023 PW31-024 PW31-025 PW31-026 PW31-028 PW31-029 PW31-030 PW31-031 PW31-032 PW31-033 PW31-034 PW31-036 PW31-037 PW31-038 PW31-039 PW31-040 PW31-041 Descri
EXPLODED VIEW AND PARTS LIST Engine: 24
EXPLODED VIEW AND PARTS LIST Item # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 31.1 31.2 31.
WARRANTY STATEMENT Remember to save the receipt and to accurately fill out and mail the product registration card. Proof of purchase is required for all warranty work. WEN® pressure washers are under warranty to be free from defects in materials and workmanship for a period of two (2) years from date of original purchase. Pressure washers used for commercial or rental use have a warranty period of 90 days from date of original purchase.
