sunjoe SPX3501 - User Manual

Questions and Answers

R
Raymond SmithJul 28, 2025
How to fix a Sun Joe Pressure Washer that won't start?
- C
  Curtis GomezJul 28, 2025
  If your Sun Joe Pressure Washer refuses to start, first ensure it's properly plugged into a working outlet and check the power cord, resetting the GFCI if necessary. Try a different outlet. If that doesn't work, replace the fuse, making sure to switch off other machines on the same circuit. As a last resort, try operating the unit without an extension cord to rule out any issues with it.
L
Luis WatsonAug 2, 2025
What to do if Sun Joe Pressure Washer is pulsating?
- S
  Steve ColemanAug 2, 2025
  If your Sun Joe Pressure Washer is pulsating, it may be due to several factors. First, allow the machine to run while holding the trigger until regular working pressure resumes, as there might be air in the inlet hose. Ensure that the water supply meets the required specifications, avoiding long, thin hoses (minimum 1/2 in. diameter). Clean the nozzle and the water inlet filter. Finally, straighten out any kinks or blockages in the hose.
H
hardyrobertAug 7, 2025
Why is the pressure fluctuating on my Sun Joe Pressure Washer?
- K
  Kayla JonesAug 7, 2025
  If your Sun Joe Pressure Washer experiences fluctuating pressure, it could be due to the pump sucking air. Check that all hoses and connections are airtight. Alternatively, the valves may be dirty, worn out, or stuck, requiring cleaning or replacement of the valves/seals.
M
megan10Aug 11, 2025
What to do if Sun Joe Pressure Washer starts, but no water comes out?
- N
  Natalie BarnesAug 12, 2025
  If your Sun Joe Pressure Washer starts but no water comes out, several issues could be the cause. Check if the pump, hoses, or accessories are frozen and wait for them to thaw. Ensure there is a water supply connected. Clean the water inlet filter and also clean the nozzle.
S
Steven AndersonAug 17, 2025
Why does my Sun Joe Pressure Washer keep stopping?
- J
  jeffrey65Aug 17, 2025
  If your Sun Joe Pressure Washer stops during operation, it could be due to several reasons. First, try replacing the fuse and switch off other devices using the same circuit. Also, verify that the mains voltage matches the specification on the model tag. If the thermal sensor has activated, let the washer cool down for 5 minutes before restarting. Lastly, a partially blocked nozzle can cause this issue, so try cleaning it.
J
Jonathan HolmesAug 22, 2025
What causes a Sun Joe Pressure Washer fuse to blow?
- M
  michelegardnerAug 22, 2025
  If the fuse blows in your Sun Joe Pressure Washer, it might be because the fuse is too small. Install a fuse with a higher amp rating than the machine's amp consumption. Additionally, try using the unit without an extension cord.

Summary

IMPORTANT! Safety Instructions

General Safety Precautions

General safety precautions for using the pressure washer, including user suitability and basic precautions.

Safe Operation Guidelines

Key operational safety tips like staying alert, proper footing, and avoiding unintentional starting.

Electrical Safety Precautions

Focuses on GFCI protection, inspecting electrical cords, and avoiding water contact.

Electrical Safety

Electrical Shock Hazard and Grounding

Addresses electrical shock hazards, proper grounding, and connection requirements.

Safety Devices Explained

Explanation of safety features like the unloader valve and spray gun locking device.

Risk of Electrocution and Explosion

Extension Cord Usage

Guidelines for using extension cords safely, including type, gauge, and length limitations.

Explosion Hazards

Warning against spraying flammable liquids and the risks associated with them.

Additional Safety Instructions

Further safety advice including nozzle safety, injection hazard, and servicing precautions.

Product Description

Purpose and Application

States the intended use of the pressure washer for residential cleaning tasks and lists suitable applications.

Safety Symbols

Understanding Safety Symbols

Explains various safety symbols found on the product and their meanings.

Know Your Electric Pressure Washer

Component Identification

Diagram and list of all parts and controls of the pressure washer.

Technical Specifications

Provides key technical specifications of the pressure washer.

Unpacking and Assembly

Carton Contents

Lists all items included in the product packaging.

Initial Assembly Steps

Step-by-step instructions for assembling the pressure washer, including attaching the handle and nozzle board.

Assembly Continued

Attaching Wand, Hose, and Protector

Instructions on attaching the spray wand, trigger gun, hose, and spray wand protector.

Operation

Using the Pressure Washer

Detailed steps on how to operate the pressure washer safely and effectively.

GFCI Reset Procedure

Note on resetting the GFCI when initially plugging in the unit.

Using Nozzles

Connecting and Disconnecting Nozzles

Steps for connecting and safely disconnecting the quick-connect nozzles from the spray wand.

Working with Detergents

Detergent Application Process

Instructions on filling the detergent tank, using the soap nozzle, and applying detergent.

Rinsing and Shutting Down

Nozzle Selection for Cleaning Tasks

Describes the use of different nozzles for various cleaning tasks.

Proper Shutdown and Disconnection

Steps to properly shut down and disconnect the pressure washer after use.

Storage Guidelines

Guidelines for storing the pressure washer, especially during cold weather.

Hose Reel and Maintenance

Hose Reel Operation

Instructions for unlocking and winding the high-pressure hose onto the reel.

Maintenance Procedures

Instructions for performing maintenance tasks like cleaning the adapter filter and nozzle.

Winterizing for Long-Term Storage

Procedure to protect the pressure washer from cold weather damage during storage.

Disposal and Support

Product Disposal and Recycling

Information on how to dispose of the pressure washer responsibly.

Service and Support Information

Contact information and guidance for obtaining service and support for the product.

Model and Serial Number Recording

Guidance on locating and recording model and serial numbers for service.

Customer Promise and Warranty

Product Registration

Instructions and benefits of registering the product purchase.

Warranty Coverage Details

Defines eligibility for warranty coverage and lists what is covered and not covered.

Summary

IMPORTANT! Safety Instructions

General Safety Precautions

General safety precautions for using the pressure washer, including user suitability and basic precautions.

Safe Operation Guidelines

Key operational safety tips like staying alert, proper footing, and avoiding unintentional starting.

Electrical Safety Precautions

Focuses on GFCI protection, inspecting electrical cords, and avoiding water contact.

Electrical Safety

Electrical Shock Hazard and Grounding

Addresses electrical shock hazards, proper grounding, and connection requirements.

Safety Devices Explained

Explanation of safety features like the unloader valve and spray gun locking device.

Risk of Electrocution and Explosion

Extension Cord Usage

Guidelines for using extension cords safely, including type, gauge, and length limitations.

Explosion Hazards

Warning against spraying flammable liquids and the risks associated with them.

Additional Safety Instructions

Further safety advice including nozzle safety, injection hazard, and servicing precautions.

Product Description

Purpose and Application

States the intended use of the pressure washer for residential cleaning tasks and lists suitable applications.

Safety Symbols

Understanding Safety Symbols

Explains various safety symbols found on the product and their meanings.

Know Your Electric Pressure Washer

Component Identification

Diagram and list of all parts and controls of the pressure washer.

Technical Specifications

Provides key technical specifications of the pressure washer.

Unpacking and Assembly

Carton Contents

Lists all items included in the product packaging.

Initial Assembly Steps

Step-by-step instructions for assembling the pressure washer, including attaching the handle and nozzle board.

Assembly Continued

Attaching Wand, Hose, and Protector

Instructions on attaching the spray wand, trigger gun, hose, and spray wand protector.

Operation

Using the Pressure Washer

Detailed steps on how to operate the pressure washer safely and effectively.

GFCI Reset Procedure

Note on resetting the GFCI when initially plugging in the unit.

Using Nozzles

Connecting and Disconnecting Nozzles

Steps for connecting and safely disconnecting the quick-connect nozzles from the spray wand.

Working with Detergents

Detergent Application Process

Instructions on filling the detergent tank, using the soap nozzle, and applying detergent.

Rinsing and Shutting Down

Nozzle Selection for Cleaning Tasks

Describes the use of different nozzles for various cleaning tasks.

Proper Shutdown and Disconnection

Steps to properly shut down and disconnect the pressure washer after use.

Storage Guidelines

Guidelines for storing the pressure washer, especially during cold weather.

Hose Reel and Maintenance

Hose Reel Operation

Instructions for unlocking and winding the high-pressure hose onto the reel.

Maintenance Procedures

Instructions for performing maintenance tasks like cleaning the adapter filter and nozzle.

Winterizing for Long-Term Storage

Procedure to protect the pressure washer from cold weather damage during storage.

Disposal and Support

Product Disposal and Recycling

Information on how to dispose of the pressure washer responsibly.

Service and Support Information

Contact information and guidance for obtaining service and support for the product.

Model and Serial Number Recording

Guidance on locating and recording model and serial numbers for service.

Customer Promise and Warranty

Product Registration

Instructions and benefits of registering the product purchase.

Warranty Coverage Details

Defines eligibility for warranty coverage and lists what is covered and not covered.

The device is an electric pressure washer designed for residential use, suitable for medium-to-heavy duty cleaning tasks. It is intended for cleaning various surfaces and items such as boats, motorcycles, RVs, ATVs, trailers, decks, barbecues, siding, and patio furniture. The pressure washer operates within a temperature range of 32°F (0°C) to 104°F (40°C) and is not to be used in potentially explosive areas. It is designed to be used with cold or lukewarm water, as higher temperatures can damage the pump. The machine consists of a pump encased in a shock-absorbing housing, and it comes with a spray wand and a non-slip handle grip for optimal working position and control.

Usage Features:

Before operation, users must carefully read the operator's manual and safety instructions. The device is equipped with a Total Stop System (TSS), which senses water flow in the pump. When the trigger is released, water flow stops, and the TSS automatically turns off the motor to prevent overheating, save energy, and prolong pump life.

To start, position the washer as close as possible to the water supply on a secure and stable surface in an upright position. Ensure the unit is switched off before plugging it into a power outlet. Verify that the electrical supply voltage and frequency match the rating plate specifications. The GFCI (Ground Fault Circuit Interrupter) built into the power cord plug may need to be reset by pressing the "Reset" button until the power light indicator illuminates. The water supply tap should be turned on completely.

The pressure washer features a safety lock on the trigger gun. Before starting, ensure the safety lock is down, then press the trigger for a few seconds until water flow is steady to allow air to escape and discharge residual pressure. The ON/OFF switch is then turned to the ON (I) position to start the machine. When restarting the motor, the trigger should always be kept pressed. The motor only runs when the trigger is operated and shuts off when released.

The device is equipped with five Quick-Connect nozzles (0°, 15°, 25°, 40°, and Soap) that easily snap onto the spray wand's Quick-Connect collar. Users should select the appropriate nozzle for the cleaning task. The 0° intense-jet nozzle (orange) delivers a high-pressure, pencil-point jet stream for heavy dirt deposits and hard-to-reach areas. The 15° fan-tip nozzle (yellow) is for intense cleaning jobs on hard surfaces like stripping paint, removing oil stains, and rust. The 25° fan-tip nozzle (green) is suitable for cleaning home siding, brick patios, wood decks, driveways, or sidewalks. The 40° wide-spray tip nozzle (gray) is for cleaning cars, trucks, boats, patio furniture, or lawn equipment. The Soap nozzle (black) is used for low-pressure detergent application. Nozzles should never be changed without locking the safety lock on the trigger handle.

For cleaning with detergents, only those specifically designed for pressure washers should be used. Household detergents, acids, alkaline solutions, bleaches, solvents, flammable materials, or industrial-grade solutions are strictly prohibited as they can damage the pressure washer and the cleaning surface. The detergent tank cap with suction tube is removed, and the onboard detergent tank is gently pulled out from its storage position for filling. The detergent is then filled or mixed as recommended, and the tank is replaced with the cap secured. The soap nozzle (black) is installed on the spray wand. When the pressure washer is turned on and the trigger is pulled, liquid detergent automatically mixes with water and is discharged through the nozzle. It is recommended to test the detergent in an inconspicuous area first. The detergent dial allows adjustment of the suction volume of the detergent solution. Detergent should be applied from bottom to top on a dry surface, allowed to remain for a short time, and then rinsed. It is crucial not to let the detergent dry on painted surfaces. After using detergent, the tank must be drained and rinsed by running the pressure washer until all soap is cleared.

To shut down the machine, turn the switch to the OFF (0) position and unplug the power cord. Turn off the water source and hold the trigger to release water pressure. Disconnect the garden hose from the water inlet and the high-pressure hose from the trigger gun handle. Release the trigger and engage the gun safety lock. If taking a break of five minutes or more, engage the gun safety lock, turn off the switch, and unplug the power cord.

Maintenance Features:

Before performing any maintenance, the pressure washer must be disconnected from the electrical power supply.

The adapter filter should be checked and cleaned regularly to ensure good performance. Remove the filter and rinse it with warm water to prevent foreign matter from clogging the pump.

The nozzle should be cleaned using the provided needle clean-out tool. Remove the spray wand from the gun, clear any dirt from the nozzle hole, and rinse. Additional debris can be removed by back flushing water through the nozzle and spray wand using a garden hose.

For winterizing and long-term storage, especially in locations where temperatures fall below 32°F (0°C), it is recommended to use a pump protector to prevent cold weather damage. All water connections should be disconnected. The pressure washer should be turned on for a few seconds until all remaining water exits the pump, then immediately turned off. The high-pressure hose should not be kinked. The machine and accessories should be stored indoors in a dry, covered area that does not reach freezing temperatures and away from heat sources that could dry out pump seals. Before reusing after winter storage, the unit must be completely flushed with clear water to remove any anti-freeze products, which can damage paintwork.

The device is not suitable for connection to potable water mains, and if such a connection is made, the system must be protected against backflow. Only clean water without impurities should be used; unfiltered water or water containing corrosive chemicals will damage the washer. The power cord connections should be kept dry and off the ground. If the power cord is damaged or shows signs of wear, the pressure washer should not be used, and customer service should be contacted. Hoses, fittings, and couplings should be regularly inspected for damage and replaced if necessary. The machine should be kept on a stable, flat surface during operation, handling, transportation, and storage to prevent overturn and bodily injury. In case of an accident or breakdown, the machine should be switched off immediately. If contact with detergent occurs, rinse with clean water.

sunjoe SPX3501 Specifications

General

Max Pressure	2030 PSI
Flow Rate	1.48 GPM
Hose Length	20 ft
Power Cord Length	35 ft
Power Type	Electric
Motor	13-amp
Weight	31.5 lbs (14.3 kg)
Maximum Pressure	2030 PSI
Water Flow	1.48 GPM
Nozzle Types	0º, 15º, 25º, 40º
Motor Type	Electric
Nozzles	0º, 15º, 25º, 40º, Soap