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Wen PW31 - User Manual

Wen PW31
26 pages
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Model # PW31
3100 PSI
bit.ly/WENvideo
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.
IMPORTANT:
NEED HELP? CONTACT US!
Have product questions? Need technical support?
Please feel free to contact us at:
800-232-1195
techsupport@wenproducts.com
WENPRODUCTS.COM
(M-F 8AM-5PM CST)
PRESSURE WASHER

Table of Contents

Questions and Answers

  • K
    Karen HernandezAug 2, 2025
    Why won't my Wen PW31 start?
    • J
      Joseph Armstrong MDAug 3, 2025
      If the engine of your Wen Pressure Washer doesn't start, there are several potential causes: * The engine switch might be off, so set it to "ON." * The fuel valve could be off; turn it to the "ON" position. * The choke might be open; close it. * The engine might be out of fuel; add gasoline. * The gasoline may be contaminated or old; change it. * The spark plug could be dirty; clean it, or broken; replace it. * The generator might not be on a level surface; move it to one. * The oil level might be low; add or replace the oil.
  • L
    Lori GallegosAug 9, 2025
    What to do if the Wen Pressure Washer pump fails to produce pressure?
    • D
      Danielle WilliamsAug 9, 2025
      If your Wen Pressure Washer pump isn't producing pressure or the pressure is inconsistent, check these: 1. Ensure the water supply isn't restricted by inspecting the garden hose for leaks and using a hose with at least a ¾ inch diameter. 2. Make sure the water source is fully open. 3. Clean the nozzle if it's clogged. 4. Check the spray gun for leaks and tighten the connection or replace the gun if needed. 5. Squeeze the trigger to remove any air in the line. 6. Clean the inlet hose screen if it's clogged. 7. Ensure the water supply is cooler than 100°F.
  • S
    Sheila ToddAug 17, 2025
    How to fix weak water pressure on my Wen PW31?
    • C
      Charles PrestonAug 17, 2025
      If the water pressure of your Wen Pressure Washer is weak, consider the following: * Check the water supply for restrictions. Inspect the garden hose for leaks and ensure you're using a large enough hose (minimum ¾ inch diameter). * Ensure the water source is fully open. * Try using a high-pressure nozzle.
  • M
    Matthew EllisonAug 26, 2025
    What to do if detergent and spray do not mix in Wen PW31 Pressure Washer?
    • R
      Rita ByrdAug 26, 2025
      If the detergent and spray aren't mixing in your Wen Pressure Washer, ensure the detergent hose is properly connected and submerged in the detergent. Also, make sure you are using the soap nozzle.

Summary

Pressure Washer Identification

Service Record

Log maintenance dates and performed services for the pressure washer.

Product Introduction

Safety Information Overview

General Safety Procedures

Pressure Washer Components

Pressure Washer Preparation

Unpacking Instructions

Steps for safely removing the pressure washer and its accessories from the packaging.

Attaching Foot Assembly

Instructions for attaching the foot assembly to the pressure washer frame.

Installing the Handle

Steps for securely attaching the handle to the pressure washer unit.

Attaching Gun Hooks

Guide for mounting the gun hooks onto the pressure washer frame.

Adding Engine Oil

Detailed steps for adding the correct engine oil type and amount before first use.

Engine Oil Recommendations

Guidance on selecting appropriate oil viscosity based on operating temperature.

Adding Gasoline

Instructions for safely adding fresh, unleaded gasoline to the fuel tank.

Connecting Garden Hose

Steps for connecting the water supply hose to the pressure washer inlet.

Connecting High Pressure Hose

Instructions for attaching the high-pressure hose to the pump and spray wand.

Operation

Starting the Pressure Washer

Step-by-step guide to starting the engine, including choke and recoil procedures.

Stopping the Pressure Washer

Instructions on safely turning off the unit and releasing residual pressure.

Using the Spray Gun

How to operate the spray gun, including safety lock and trigger functions.

Using Spray Nozzles

Guide on connecting, selecting, and using spray nozzles for different tasks.

Applying Detergent

Steps for safely applying detergent with the soap nozzle and proper rinsing.

Maintenance and Care

Pre-Operation Steps

Essential checks and tasks to perform before starting the pressure washer engine.

After Each Use Procedures

Procedures to follow after operating for cleaning and storage.

Checking Engine Oil

Instructions on how to correctly check the engine oil level before each use.

Changing and Adding Oil

Detailed steps for changing or adding engine oil, including capacity and type.

Air Cleaner Maintenance

Steps for inspecting, cleaning, or replacing the air cleaner element for engine performance.

Draining the Fuel Tank

Procedure for draining fuel tank and carburetor before storage or maintenance.

Spark Plug Maintenance

Guide for inspecting, cleaning, gapping, and replacing the spark plug for engine operation.

High Pressure Hose Inspection

Instructions for inspecting the high-pressure hose and couplings for damage and replacement needs.

Spray Gun Checks

Checks for secure connection and proper function of the spray gun trigger and safety lock.

Spray Nozzle Cleaning

How to clean a dirty or clogged spray nozzle to restore proper spray pattern.

Storage and Transport Procedures

Specifications

Troubleshooting Guide

Exploded View and Parts List

Warranty Statement

Wen PW31 Specifications

General IconGeneral
Power SourceElectric
PumpAxial Cam Pump
Motor/Engine13 Amp motor
Hose Length20 ft
Nozzle Types5 Quick-Connect Nozzles

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