1. Introduction
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your Blue Clean High Pressure Washer Model 491. Please read this manual thoroughly before using the appliance and keep it for future reference. This high-pressure washer is designed for frequent use and demanding cleaning tasks, such as cleaning cars, motorcycles, swimming pools, stairs, floors, and various tools.
2. Safety Information
Always observe basic safety precautions to reduce the risk of fire, electric shock, and personal injury. Failure to follow these instructions may result in serious injury or property damage.
- Electrical Safety: Ensure the power supply matches the voltage specified on the product label (220 Volt, 60 Hz). Always use a grounded outlet. Do not operate the pressure washer with a damaged cord or plug.
- Water Connection: Connect the pressure washer to a cold water supply only. Do not use contaminated water.
- Personal Protection: Wear appropriate personal protective equipment, including safety glasses, hearing protection, and protective clothing, to prevent injury from high-pressure spray or debris.
- Operation: Never point the spray gun at people, pets, or electrical equipment. Keep children and bystanders away from the operating area. Do not operate the machine if you are fatigued or under the influence of drugs or alcohol.
- Maintenance: Disconnect the power supply before performing any maintenance or cleaning.
- Storage: Store the pressure washer in a dry, frost-free area.
3. Package Contents
Carefully unpack the box and ensure all items are present and undamaged. If any parts are missing or damaged, contact your retailer.
- Blue Clean High Pressure Washer Model 491 unit
- Trigger gun
- Lance with adjustable spray nozzle
- Rotary lance
- High-pressure hose (8 meters, reinforced metal mesh)
- Hose reel (integrated)
- Water hose (for inlet)
- Inspectable water inlet filter
- Detergent Tank (1.4 liters capacity)

Image 3.1: Overview of the Blue Clean High Pressure Washer Model 491 and its included accessories, including the main unit, trigger gun, lances, and hoses.
4. Setup and Assembly
Follow these steps to prepare your pressure washer for first use.
- Attach the Handle: Secure the handle to the main unit if it is not already pre-assembled.
- Connect the High-Pressure Hose: Unwind the high-pressure hose from the integrated hose reel. Connect one end of the high-pressure hose to the outlet on the pressure washer unit and the other end to the trigger gun. Ensure connections are secure.
- Connect the Water Inlet Hose: Attach the water inlet hose (not supplied) to your water supply and then to the water inlet on the pressure washer. Ensure the inspectable water inlet filter is in place.
- Attach the Lance: Select the desired lance (adjustable spray nozzle or rotary lance) and attach it to the trigger gun.
- Fill Detergent Tank (Optional): If using detergent, fill the integrated detergent tank with an appropriate pressure washer detergent.

Image 4.1: The Blue Clean High Pressure Washer Model 491 fully assembled with the high-pressure hose and trigger gun connected, ready for operation.
5. Operating Instructions
Before starting, ensure all connections are secure and the water supply is turned on.
- Purge Air from the System: Before connecting to power, squeeze the trigger gun to allow water to flow through the system and expel any trapped air. Continue until a steady stream of water emerges.
- Connect Power: Plug the power cord into a grounded electrical outlet.
- Start the Pressure Washer: The Blue Clean 491 features an Automatic Stop System. The motor starts when you press the trigger gun lever and stops when you release it. This system helps prevent overheating and extends pump life.
- Adjust Spray Pattern: If using the adjustable spray nozzle, rotate the nozzle head to change the spray pattern from a concentrated jet to a wide fan spray.
- Detergent Application: To apply detergent, ensure the detergent tank is filled. The pressure washer will draw detergent when operating at low pressure or with a specific detergent nozzle (if provided). Refer to the detergent manufacturer's instructions for dilution.
- Cleaning Technique: Hold the spray gun firmly with both hands. Start spraying from a distance and move closer to the surface as needed, maintaining a safe distance to avoid damage.
- Shutting Down: Release the trigger gun lever to stop the motor. Turn off the water supply. Squeeze the trigger gun to release any remaining pressure in the system. Disconnect the power cord.

Image 5.1: A user demonstrating the application of the Blue Clean High Pressure Washer Model 491 for cleaning a vehicle, highlighting its practical use.
6. Maintenance
Regular maintenance ensures optimal performance and extends the life of your pressure washer.
- After Each Use: Flush the system with clean water to remove any detergent residue. Disconnect hoses and drain water from the pump and hoses.
- Clean Water Inlet Filter: Regularly inspect and clean the water inlet filter to prevent debris from entering the pump.
- Nozzle Cleaning: If the spray pattern becomes irregular or pressure drops, clean the nozzle orifice with the provided nozzle cleaning tool (if applicable) or a thin wire.
- Storage: Store the pressure washer in a dry, frost-free environment. Wind the high-pressure hose onto the integrated reel and secure the gun and lances in their designated housings.

Image 6.1: Rear view of the Blue Clean High Pressure Washer Model 491, illustrating the integrated detergent tank and convenient storage options for accessories.
7. Troubleshooting
Refer to this section for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor does not start | No power supply; Trigger gun not pressed; Thermal overload activated | Check power connection; Press trigger gun; Allow motor to cool down |
| Low pressure | Insufficient water supply; Clogged nozzle; Air in pump; Leaks in hose/connections | Check water supply/faucet; Clean nozzle; Purge air from system; Check for leaks and tighten connections |
| Pulsating pressure | Air in pump; Clogged nozzle; Water supply restriction | Purge air from system; Clean nozzle; Check water inlet filter and hose for kinks |
| Detergent not dispensing | Detergent tank empty; Nozzle not set for detergent application; Clogged detergent line | Refill detergent tank; Ensure correct nozzle/pressure setting; Clean detergent line |
8. Specifications
| Feature | Specification |
|---|---|
| Model | 491 |
| Power | 2100 W |
| Voltage | 220 Volt |
| Frequency | 60 Hz |
| Maximum Pressure | 145 Bar |
| Water Flow Rate | 450 liters/hour |
| Hose Length | 8 meters (high-pressure) |
| Detergent Tank Capacity | 1.4 liters |
| Item Weight | 21.5 Kilograms |
| Product Dimensions (L x W x H) | 32 x 35 x 70 cm |
| Power Source | Corded Electric |
9. Warranty and Support
For warranty information and customer support, please refer to the warranty card included with your product or contact your retailer. Keep your purchase receipt as proof of purchase.





