Wen PW3100

Questions and Answers:

K
kevin10Jul 28, 2025
Why won't my Wen PW3100 engine start?
- J
  John JohnsonJul 28, 2025
  There are several reasons why your Wen Pressure Washer engine might not start: * The engine switch may be set to “OFF”. If that's the case, set it to “ON”. * The fuel valve may be turned to “OFF”. If so, turn the fuel valve to the “ON” position. * The choke might be open, so close it. * The engine could be out of fuel, add gasoline. * The engine might be filled with contaminated or old gasoline, change the gasoline in the gas tank. * The spark plug might be dirty, so clean it. If it's broken, replace it. * The generator might not be on a level surface, move it to a level surface to prevent low oil shutdown from triggering. * The oil level may be low, add or replace the oil.
J
Joyce ButlerAug 6, 2025
What to do if my Wen PW3100 Pressure Washer pump fails to produce pressure or pressure is inconsistent?
- H
  Hannah DanielsAug 6, 2025
  If your Wen Pressure Washer pump isn't producing pressure or the pressure is inconsistent, here's what you can check: 1. Ensure the water supply isn't restricted. Inspect the garden hose for leaks and make sure you're using a large enough hose (minimum 3/4” diameter). 2. Make sure the water is turned on to full power. 3. Check if the nozzle is clogged and clean it if necessary. 4. Inspect the spray gun for leaks. Check the spray gun connection or replace the spray gun if needed. 5. Remove any air in the line by squeezing the trigger handle. 6. Clean the inlet hose screen if it's clogged. 7. Ensure the water supply is not over 100°F; use a cool water supply.
P
Patricia CarpenterAug 16, 2025
Why is the water pressure weak on my Wen Pressure Washer?
- B
  Brian DominguezAug 16, 2025
  Weak water pressure in your Wen Pressure Washer could be due to a few reasons: * The water supply may be restricted. Inspect the garden hose for leaks and ensure you are using a large enough hose (min. 3/4” diameter). * The water might not be turned on to full power, open the water source all the way. * You might not be using a high-pressure nozzle. Try changing the nozzle.

Wen PW3100 Specifications

General

Brand	Wen
Model	PW3100
Category	Pressure Washer
Language	English

Summary

Specifications

Introduction

Identification and Service Record

Identification

Information for identifying the pressure washer and its serial number for service.

Service Record

Log for recording maintenance activities like oil changes and spark plug service.

General Safety Rules

Work Area Safety

Guidelines for maintaining a safe and clear operational environment.

Personal Safety

Precautions for operator well-being, including PPE and alertness.

Power Tool Use and Care

Proper methods for using and maintaining power tools to ensure safety.

Service

Instructions for professional servicing and use of identical replacement parts.

Safety Rules for Pressure Washers

Carbon Monoxide Danger

Critical warning about lethal CO gas from exhaust and safe operating locations.

Flammable Gasoline Vapors

Precautions regarding flammable gasoline vapors and ignition sources.

Operating Precautions

Essential rules for operating the pressure washer safely, including refueling.

Heat and High Pressure

Warnings about hot surfaces, high-pressure water streams, and kickback.

Know Your Pressure Washer

Component Identification

Visual identification of key components and controls of the pressure washer.

Packing List and Unpacking

Details of included items and instructions for safely unpacking the unit.

Preparation

Attaching Foot Assembly

Steps for assembling the foot support structure for stability.

Installing the Handle

Instructions for correctly mounting the handle assembly to the main unit.

Mounting Gun Hooks

Guidance on attaching the hooks for storing the spray gun and lance.

Connecting the Spray Gun

Procedure for assembling the spray wand and connecting the high-pressure hose.

Add Engine Oil

Detailed steps for adding the correct type and amount of engine oil before operation.

Engine Oil Recommendations

Guidance on selecting appropriate API service classifications and SAE viscosity grades.

Adding Gasoline

Instructions for safely filling the fuel tank with the correct type of unleaded gasoline.

Connecting Garden Hose

Steps for connecting the water supply hose and preparing the pump.

Connecting High Pressure Hose

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

Operation

Starting Pressure Washer

Step-by-step guide to starting the pressure washer engine and system.

Stopping Pressure Washer

Correct procedure for safely shutting down the pressure washer.

Pressure Washer Release Valve

Explanation of the pressure release valve's function and when to seek replacement.

Using the Spray Gun

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

Using the Spray Nozzle

Instructions for connecting, disconnecting, and selecting the appropriate spray nozzle.

Applying Detergent

Steps for using the soap nozzle and applying cleaning detergents effectively.

Maintenance

Maintenance Schedule

Overview of recommended maintenance tasks and their frequency.

Pre-Operation Steps

Essential checks to perform before starting the pressure washer.

After Each Use

Procedures to follow after completing operation for proper care.

Checking the Oil

How to check and maintain the correct engine oil level.

Cleaning the Spark Arrestor

Instructions for cleaning the spark arrestor on the muffler.

Draining the Carburetor

Steps to drain the carburetor to prevent fuel deterioration.

ChangingAdding Oil

Detailed procedure for changing engine oil, including oil capacity.

Air Cleaner Maintenance

How to clean or replace the air cleaner element for optimal engine performance.

Draining the Fuel Tank

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

Draining the Soap

Steps to drain any residual soap from the detergent system.

Spark Plug Maintenance

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

Checking Detergent Siphoning Tube

How to inspect the detergent tube for clogs or damage.

High Pressure Hose Maintenance

Inspecting the high-pressure hose and couplings for damage.

Spray Gun Maintenance

Checking the spray gun connection and trigger mechanism.

Spray Nozzle Cleaning

How to clean a clogged or dirty spray nozzle.

Storage and Transport

Storing for Extended Periods

Steps for properly storing the pressure washer for long-term non-use.

Transporting the Pressure Washer

Guidelines for safely moving or transporting the pressure washer.

Troubleshooting

Warranty Statement

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