SPX3500 Electric Pressure Washer The Sun Joe® SPX3500 Electric Pressure Washer is designed for residential medium-to-heavy-duty cleaning on boats, motorcycles, RVs, ATVs, trailers, decks, barbecues, siding, patio furniture, and more. 2300 PSI Max1.48 GPM Max13-Amp Motor40.6 fl oz Tank Meet the SPX3500 Why It Stands Out Performance & ControlsOn/Off switch powers the washer during use. The detergent dial adjusts suction volume, and five Quick-Connect nozzles provide 0°, 15°, 25°, 40°, and soap spray options. Cleaning SystemThe 40.6 fl oz detergent tank holds pressure washer-rated detergent. The trigger gun controls spray flow and includes a safety lock, while the spray wand connects to the nozzles. Reach & ConnectionsA 20 ft high-pressure hose connects the washer and trigger gun. The 35 ft GFCI power cord provides electrical protection, and the water inlet with adapter connects to a reinforced garden hose. Mobility & StorageThe handle supports movement and hose storage, the wheels help move the washer, and the needle clean-out tool clears clogged nozzle openings. Technical Specifications Specification Details Product Type Electric pressure washer Best Use Residential medium-to-heavy duty cleaning for boats, motorcycles, RVs, ATVs, trailers, decks, barbecues, siding, patio furniture, and more Rated Voltage 120V ~ 60 Hz Motor 13 amps Maximum Pressure 2300 PSI max per CSA test standards Rated Pressure 2000 PSI under typical load Maximum Flow 1.48 GPM max per CSA test standards Rated Flow 1.09 GPM under typical load Maximum Water Inlet Temperature 104°F / 40°C Maximum Water Inlet Pressure 0.7 MPa Detergent Tank Capacity 40.6 fl oz / 1.2 L High-Pressure Hose Length 20 ft / 6 m Power Cord Length 35 ft / 10.7 m with GFCI Nozzles Included 0° orange, 15° yellow, 25° green, 40° gray, and soap black Quick-Connect nozzles Total Stop System Yes Weight 36.8 lbs / 16.7 kg Product Manual SPX3500 Operator's Manual Warranty 2 Year Warranty What's in the Box Electric pressure washer Handle High-pressure hose holder Nozzle storage board Spray wand protector Trigger gun holder Two 4.8 x 20 screws Nine 4.8 x 16 screws Spray wand Trigger gun Five Quick-Connect nozzles: 0°, 15°, 25°, 40°, and soap Needle clean-out tool included with the manual packet 20 ft high-pressure hose Garden hose adapter / female coupler Manuals with registration card Optional Accessories Accessory Model Sun Joe® House + Deck All-Purpose Pressure Washer Rated Concentrated Cleaner SPX-HDC1G Sun Joe® Premium Snow Foam Pressure Washer Rated Car Wash Soap + Cleaner SPX-FCS1G Sun Joe® All-Purpose Heavy Duty Pressure Washer Rated Cleaner + Degreaser SPX-APC1G 25 ft medium-duty extension hose for SPX Pressure Washer Series SPX-25H Solid brass universal Quick-Connect coupler / garden hose to pressure washer adapter SPX-UQC Assembly Do not connect the unit to power until assembly is complete. Keep the pressure washer upright on a secure, stable surface during setup and operation. 1 Handle Install handle and hose holder. › 2 Storage Attach nozzle board and holders. › 3 Wand Connect wand to trigger gun. › 4 Hoses Connect pressure hose and water supply. Install the high-pressure hose holder Slide the high-pressure hose holder into position on the handle and secure it with four 4.8 x 16 screws. Install the handle assembly Slide the handle with high-pressure hose holder into position on top of the pressure washer. Secure it with two 4.8 x 20 screws and two 4.8 x 16 screws. Attach the nozzle storage board Place the nozzle storage board into position and secure it with two 4.8 x 16 screws. Install the trigger gun holder and spray wand protector Slide the trigger gun holder into place. Snap the spray wand protector tab into the slot at the bottom left side of the unit, then secure it with one 4.8 x 16 screw. Connect the spray wand Fit the spray wand into the trigger gun and rotate it until both parts are completely locked. Connect the high-pressure hose Connect the high-pressure hose to the trigger gun. Connect the other end to the water outlet on the washer. Connect the garden hose Connect the garden hose adapter to the water inlet, then thread your garden hose into the adapter. Use a reinforced garden hose with at least a 1/2 in. internal diameter. Getting Started / Operation Extension Cord Guidance Extension cords are not recommended. The SPX3500 includes a 35 ft GFCI power cord. If an extension cord must be used, it must not exceed 25 ft, the combined cord length must not exceed 60 ft, and the cord must be 14 AWG or heavier. Cord Setup Requirement Built-in power cord 35 ft GFCI power cord Extension cord length Do not use over 25 ft Combined cord length Must not exceed 60 ft total Minimum extension cord gauge 14 AWG or heavier Connection type Outdoor-rated, watertight plug and socket construction Getting Started Total Stop System: The motor automatically shuts off when the trigger is released and the unit is pressurized. This is normal. Squeeze the trigger again to restart the pump motor. Position the pressure washer Place the washer as close as possible to the water supply. Keep it upright on a secure, stable surface. Confirm the unit is switched off Make sure the On/Off switch is OFF before plugging the unit into a power outlet. Reset the GFCI if needed When first plugged in, press the Reset button until the power light indicator on the GFCI illuminates. Turn on the water completely Turn the water supply tap on completely before starting the pressure washer. Prime the system Make sure the safety lock is down, then press the trigger for a few seconds until water flow is steady. This allows air to escape and discharges residual pressure in the hose. Start the pressure washer Turn the On/Off switch to the ON position. When restarting the motor, keep the trigger pressed. Nozzle Guide Nozzle Recommended Use 0° Orange Spot cleaning or hard-to-reach areas. This is the most concentrated spray pattern and should only be used carefully on durable surfaces. 15° Yellow Intense cleaning on hard surfaces, including tough dirt, grease, mildew stains, and rust from steel. 25° Green General-purpose cleaning for siding, brick patios, wood decks, driveways, or sidewalks. Test a small area first. 40° Gray Gentler wide spray for cars, trucks, boats, patio furniture, or lawn equipment. Soap Black Low-pressure detergent application using pressure washer-rated detergent. Never change nozzles while the trigger is engaged. Turn off the pressure washer, shut off the water, release pressure, and engage the safety lock before changing nozzles. Using Detergent Use the black soap nozzle only for detergent. The colored high-pressure nozzles will not draw detergent from the tank. Use pressure washer detergent only Use detergents designed for pressure washers. Do not use household detergents, acids, alkaline solutions, bleach, solvents, flammable materials, or industrial-grade solutions. Remove and fill the detergent tank Remove the detergent tank cap with suction tube, gently pull the detergent tank out of storage, fill or mix detergent according to the detergent instructions, then secure the cap and suction tube back into place. Install the black soap nozzle Attach the black soap Quick-Connect nozzle to the spray wand. Adjust detergent flow Turn the detergent dial to adjust the suction volume of the detergent solution. Apply detergent properly Apply detergent from the bottom to the top of the dry surface. Let it remain briefly, but do not allow detergent to dry on the surface. Drain and rinse after use When finished, drain and rinse the detergent tank. Run the pressure washer until all soap is drained from the detergent tank. Shutting Down Turn the switch OFF Turn the switch to the OFF position and unplug the power cord from the outlet. Turn off the water source Shut off the water supply. Release pressure Hold the trigger to release water pressure from the system. Disconnect hoses Disconnect the garden hose from the water inlet and disconnect the high-pressure hose from the trigger gun handle. Engage the safety lock Release the trigger and engage the gun safety lock. Taking a break? If pausing for five minutes or more, engage the gun safety lock, turn the switch OFF, and unplug the power cord. Maintenance, Care & Storage Care & Maintenance Always disconnect the power plug before inspecting, cleaning, changing accessories, or maintaining the pressure washer. 1 Clean the adapter filter Remove the adapter filter from the garden hose adapter and rinse it with warm water to prevent foreign matter from clogging the pump. 2 Clean clogged nozzles Remove the nozzle from the spray wand, use the included needle clean-out tool to clear the nozzle hole, then rinse the nozzle. 3 Backflush the nozzle and wand Run water through the nozzle and spray wand from the front opening to push debris out through the back opening. 4 Inspect hoses regularly Keep hoses away from sharp objects. Replace damaged hoses and do not attempt to repair a damaged high-pressure hose. Storage & Winterizing Freeze damage is not covered by the warranty. Store the pressure washer indoors in a dry, frost-free location where temperatures will not fall below 32°F / 0°C. 1 Drain before storage Always empty water from the hoses, pump, and detergent tank before storing. 2 Short purge for long-term storage Disconnect all water connections, turn the machine on for a few seconds until remaining water exits the pump, then turn it off immediately. 3 Avoid hose kinks Do not allow the high-pressure hose to become kinked during storage. 4 Use pump protection for winter storage Use a non-corrosive/non-toxic antifreeze, pump saver, or pump protector before winter storage. 5 Flush before reuse Before reusing after antifreeze or pump protector, completely flush the unit with clear water. Troubleshooting Guide Use these quick checks for common SPX3500 issues. Always disconnect power before checking, cleaning, or maintaining the unit. Machine Refuses to Start Step-by-Step Check Check the GFCI light indicator. This confirms whether the pressure washer is receiving power. There should be a red or green light on the GFCI plug. If the GFCI light is off: Press the RESET button on the GFCI plug. Make sure the plug is fully seated, then try a known working outlet. There should be a red or green light. If using an extension cord: Remove the extension cord and plug the pressure washer directly into a wall outlet. Check the nozzle: Remove the nozzle and clean it with the needle clean-out tool. If the nozzle cannot be removed, make sure the nozzle opening is not clogged. Run the full restart sequence: Connect the garden hose and turn the water supply fully on. Make sure the trigger safety lock is in its normal operating position. Press and hold the trigger until water flow is steady to purge air and release trapped pressure. Reset the GFCI if needed, turn the machine ON, and try again. Fluctuating Pressure Possible Causes Pump is sucking air Hoses or connections are not airtight Valves or seals may be dirty, worn, or stuck Solutions Check that hoses and connections are airtight Run the washer with the trigger held until regular pressure resumes Clean the adapter filter and nozzle Machine Stops Possible Causes Fuse has blown Incorrect mains voltage Thermal sensor activated Nozzle partially blocked Solutions Switch off other machines using the same circuit Confirm voltage matches the model tag Let the washer cool for 5 minutes, then restart Clean the nozzle Machine Pulsates Possible Causes Air in inlet hose Inadequate water supply Nozzle partially blocked Water filter blocked Hose kinked Solutions Hold the trigger until regular working pressure resumes Check that the water supply meets the required specifications Use a reinforced garden hose with at least 1/2 in. internal diameter Clean the nozzle and water inlet filter Straighten the hose and remove kinks or blockages Machine Often Starts and Stops by Itself Possible Causes Pump or spray gun is leaking Trigger mechanism is broken Unit is entering normal TSS standby after pressurizing Solutions Inspect pump, spray gun, hose, and connections for leaks Confirm the trigger is operating normally Remember that TSS standby is normal when the trigger is released Machine Starts, But No Water Comes Out Possible Causes Pump, hoses, or accessories are frozen No water supply Water inlet filter is blocked Nozzle is blocked Solutions Allow pump, hoses, or accessories to thaw before use Connect inlet water and turn the water supply on completely Clean the water inlet filter Clean the nozzle No Detergent / Soap Not Dispensing Possible Causes Black soap nozzle is not installed Detergent tank is empty Suction tube or detergent system is clogged Detergent dial is not adjusted Solutions Install the black soap nozzle Fill the detergent tank with pressure washer-rated detergent Check that the suction tube is seated in the detergent tank Adjust the detergent dial Drain and rinse the detergent tank after use Frequently Asked Questions What comes with the SPX3500? The SPX3500 includes the electric pressure washer, handle, high-pressure hose holder, nozzle storage board, spray wand protector, trigger gun holder, screws, spray wand, trigger gun, five Quick-Connect nozzles, needle clean-out tool, high-pressure hose, garden hose adapter, and manuals with registration card. What nozzles are included? It includes five Quick-Connect nozzles: 0° orange, 15° yellow, 25° green, 40° gray, and soap black. Which nozzle should I use for soap? Use the black soap nozzle only. The colored high-pressure nozzles will not draw detergent from the onboard detergent tank. Can I use household detergent or bleach? No. Use only detergents designed for pressure washers. Do not use household detergents, bleach, chlorine products, solvents, ammonia products, acid-based products, or flammable materials. Can I connect the SPX3500 to hot water? No. The maximum inlet water temperature is 104°F / 40°C. Hotter water can damage the pump. Can I use an extension cord? Extension cords are not recommended. The unit includes a 35 ft GFCI power cord. If an extension cord must be used, it must be outdoor-rated, 14 AWG or heavier, and no longer than 25 ft. The combined cord length must not exceed 60 ft. What garden hose should I use? Use a reinforced garden hose with an internal diameter of at least 1/2 inch. Avoid long, thin, kinked, or blocked hoses because they can reduce water flow and cause pulsing. How should I store the SPX3500? Store it indoors in a dry, frost-free area. Drain all water from the hoses, pump, and detergent tank. For winter storage, use a pump protector, pump saver, or non-corrosive/non-toxic antifreeze, then flush with clear water before reuse. What warranty does it have? The SPX3500 is backed by a 2-year limited warranty for ordinary household use when purchased from Snow Joe / Sun Joe or an authorized seller with proof of purchase. 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