1. Introduzione
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your TOOLCY 4400 PSI Triplex Plunger Pressure Washer Pump. Please read all instructions carefully before use to ensure proper function and to prevent injury or damage.
Informazioni sulla sicurezza
Always wear appropriate personal protective equipment (PPE) when operating pressure washing equipment, including eye protection, hearing protection, and gloves. Ensure the work area is clear of bystanders and pets. This pump is designed for COLD WATER use only.
2. Contenuto della confezione
Verify that all items listed below are included in your package. If any parts are missing or damaged, please contact TOOLCY customer support.
- 1x TOOLCY Triplex Plunger Pressure Washer Pump
- 1x Shaft Key
- 1x Oil Breather Plug (yellow)
- 4x bulloni di montaggio
- Washers for mounting bolts
- Chemical Injector Tube

Figure 2.1: Included components with the TOOLCY pressure washer pump.
3. Specifiche tecniche
| Marca | TOOLCY |
| Modello | 4400PSI-Stainless Steel Outlet |
| Pressione massima | 4400 bar |
| Portata massima | 4 GPM |
| Diametro dell'albero | 1 pollici |
| Orientamento dell'albero | Orizzontale |
| Recommended Engine Horsepower | 9-15 CV (270-420 cc) |
| Recommended Rated RPM | 3400 giri al minuto |
| Collegamento di ingresso | Tubo da giardino NH da 3/4" |
| Collegamento alla presa | Attacco rapido da 3/8" |
| Materiale | Anodized Aluminum Crankcase, Brass Pump Head |
| Peso dell'articolo | 19.96 libbre (9.07 kg) |
Compatibilità: This pump is compatible with various gas engines including Honda GX340, GX390, GX270; Simpson Armor 41114, 41096, 41115; Simpson Monster 41113, 41028, 41030, 41032, 41034; AAA 90039, 90038, 90034, DW3635; AR RKV3G27, RKV3G34, RKV4G36, RSV4G40, RKV3G39, RRV4G40HD, RG 2125HN, RG 1528HN, SLPHP4040-402; CAT 66DX40GG1, 66DX35G1I; and others like 3-0308, 3-0350, EXHP3640, EZ4040G, EZ4040, TS2021, WS202, DXPW3035, DXPW3535, DXPW4035.
4. Configurazione e installazione
Follow these steps to properly install the TOOLCY pressure washer pump onto your gas engine.
4.1 Preparing the Engine
- Assicurarsi che il motore sia spento e raffreddato.
- Pull the recoil starter to rotate the engine shaft until the keyway is facing upward.
- Insert the new shaft key (included with the pump) into the engine shaft keyway. A light coating of anti-seize compound on the engine shaft is recommended for easier future removal.
Video 4.1: Demonstrates the easy installation process of the 1-inch shaft triplex pump, including preparing the engine shaft and inserting the keyway.
4.2 Montaggio della pompa
- Align the keyway on the pump with the key on the engine shaft.
- Carefully push the pump all the way onto the engine shaft until it is fully seated.
- Ruotare la pompa finché i fori di montaggio non si allineano con il supporto del blocco motore.
- Install the new bolts and tighten them securely and evenly to ensure there are no gaps.

Figure 4.2: Pump mounting dimensions for horizontal 1-inch shaft engines.
Video 4.2: Detailed setup instructions for the 1-inch shaft triplex pressure washer pump from TOOLCY, showing pump alignment and bolt tightening.
4.3 Oil Breather Plug Installation
- Remove the red oil plug from the pump.
- Install the yellow oil breather plug into the opening. This allows for proper ventilation during operation.

Figure 4.3: Oil sight glass and breather plug location.
4.4 Collegamento dei tubi flessibili
- Connect a standard 3/4" garden hose to the pump's inlet. Ensure a tight connection to prevent leaks.
- Connect your pressure washer hose to the 3/8" quick connect outlet.
5. Istruzioni per l'uso
Once the pump is installed and hoses are connected, you can begin operation.
5.1 Regolazione della pressione
This pump features an adjustable unloader, allowing you to fine-tune the pressure output. Turn the unloader clockwise for increased pressure and counter-clockwise to reduce pressure. The final working pressure (PSI) depends on the output/horsepower of your gas engine and the nozzle used.

Figure 5.1: Adjusting pressure using the unloader valve.
Video 5.1: Oltreview of the TOOLCY 3600-4000 PSI Pressure Washer Pump, highlighting its features and pressure adjustment capabilities.
5.2 Suggerimenti generali per il funzionamento
- Always ensure a steady supply of cold water to the pump before starting the engine. Running the pump dry can cause severe damage.
- Use appropriate nozzles for the cleaning task. Different nozzles provide varying spray patterns and pressures.
- When not actively spraying, release the trigger to allow the unloader to bypass water, reducing strain on the pump and engine.
- This pump is suitable for residential and light commercial pressure washing tasks such as cleaning driveways, decks, fences, sidewalks, and vehicles.

Figura 5.2: Esamples of cleaning applications for the pressure washer pump.
6. Manutenzione
Regular maintenance ensures the longevity and optimal performance of your pressure washer pump.
6.1 Oil Level Check and Replacement
- The pump comes with pre-filled oil. Before first use, check the oil level at the oil sight glass.
- The oil needs to be replaced every 50-60 hours of running time. Use 15W-40 oil.
- The sight glass helps you easily monitor the oil level and detect if water has clouded the oil, indicating a potential issue.
6.2 Conservazione
- Before storing, especially in freezing temperatures, ensure all water is drained from the pump and hoses to prevent damage.
- Conservare la pompa in un luogo asciutto e protetto.
7. Risoluzione Dei Problemi
This section addresses common issues you might encounter with your pressure washer pump.
7.1 Low Pressure Output
- Controllare l'approvvigionamento idrico: Ensure the garden hose is fully open and providing adequate water flow.
- Ispezionare l'ugello: A clogged or worn nozzle can reduce pressure. Clean or replace as needed.
- Adjust Unloader: Turn the unloader clockwise to increase pressure.
- Aria nel sistema: Run water through the pump with the engine off and trigger open to purge air before starting.
7.2 Perdite d'acqua
- Controllare le connessioni: Ensure all hose connections are tight and properly sealed.
- Ispezionare gli O-ring: Worn or damaged O-rings in quick connects or hose fittings can cause leaks. Replace if necessary.
7.3 Pump Not Engaging
- Motore in funzione: Confirm the gas engine is running correctly.
- Shaft Key: Ensure the shaft key is properly seated and the pump is fully engaged with the engine shaft.
8. Garanzia e supporto
For warranty information, technical assistance, or to purchase replacement parts, please contact TOOLCY customer support. Refer to your product packaging or the official TOOLCY websito per i dettagli di contatto più aggiornati.
Puoi anche visitare il TOOLCY Store on Amazon per ulteriori prodotti e informazioni.