Generac PRO 8871 XC Commercial Pressure Washer User Manual

1. Product Overview

The Generac PRO 8871 XC Commercial Pressure Washer is engineered for demanding commercial use, offering robust cleaning performance and durability. This unit features a unique 3-wheel design for enhanced mobility and an integrated bucket holder for convenience.

Key Features:

• Powerful Engine: Equipped with a Generac G-Force OHV engine for reliable performance and includes low-oil shutdown for engine protection.
• Durable Pump: Features a commercial-grade direct drive AR Triplex pump, designed for extended life compared to axial cam pumps.
• Enhanced Mobility: A 3-wheel design allows for easy movement around job sites, reducing downtime.
• Integrated Storage: Includes a 5-gallon (18.9 L) bucket holder for detergent or additional tools.
• Adjustable Pressure: A pressure control valve enables adjustment of cleaning power.
• Rugged Construction: Built with a 1.25-inch (31.8 mm) welded steel tube frame and a 12-gauge formed steel baseplate.
• Comfortable Operation: Ergonomic spray gun with quick connections, a stabilizing side handle, molded grip, and an easy-to-pull trigger.
• Never-Flat Wheels: Oversized wheels designed to handle various terrains.
• Compact Storage: Folding handle bar and collapsible bucket holder for reduced footprint during transport and storage.

Figure 1.1: Front view of the Generac PRO 8871 XC Commercial Pressure Washer, showing the control panel and front wheel.

Figure 1.2: Side view of the pressure washer, highlighting the integrated 5-gallon bucket holder for convenience.

2. Safety Information

Read and understand all safety warnings and instructions before operating this pressure washer. Failure to follow these instructions may result in serious injury or property damage. Keep this manual for future reference.

General Safety Warnings:

• Personal Protective Equipment: Always wear appropriate eye protection (safety glasses), hearing protection, and protective clothing when operating the pressure washer.
• High Pressure Hazard: The high-pressure spray can cause serious injury. Never direct the spray at people, pets, or electrical devices.
• Flammable Fuels: Gasoline is highly flammable. Refuel in a well-ventilated area with the engine off and cool. Avoid spills and open flames.
• Carbon Monoxide Hazard: Engine exhaust contains carbon monoxide, a colorless, odorless, poisonous gas. Operate the pressure washer outdoors in a well-ventilated area only.
• Electrical Safety: Ensure all electrical connections are dry and secure. Do not operate the pressure washer in standing water.
• Stable Surface: Operate the pressure washer on a stable, level surface to prevent tipping.
• Children and Bystanders: Keep children and bystanders at a safe distance from the operating area.
• Chemicals: Use only detergents approved for pressure washers. Follow detergent manufacturer's instructions and safety warnings.

3. Setup and Assembly

Before first use, some assembly is required. Ensure all components are present and undamaged before proceeding.

3.1 Unpacking and Inspection:

• Carefully remove all components from the packaging.
• Inspect for any shipping damage. Contact Generac customer service if any parts are damaged or missing.
• Retain packaging materials for future storage or transport.

3.2 Component Assembly:

1. Attach the Handle: Secure the upper handle to the main frame using the provided hardware. Ensure it is firmly seated.
2. Install Wheels: Attach the wheels to the axle as per the instructions. The oversized never-flat wheels are designed for easy installation.
3. Connect Spray Gun Holder: Mount the spray gun holder to the handle or frame.
4. Assemble Bucket Holder: If not pre-assembled, attach the 5-gallon bucket holder to the frame. This holder can be collapsed for storage.

Figure 3.1: Side view illustrating the engine and pump assembly, which are key components for operation.

3.3 Preparing for Operation:

1. Add Engine Oil: Fill the engine crankcase with the recommended type and amount of engine oil. Refer to the engine manual for specific details. Do not overfill.
2. Add Fuel: Fill the fuel tank with fresh, unleaded gasoline. Do not use E85 or E15 fuel. Ensure the fuel cap is securely tightened.
3. Connect Water Supply:
   • Attach a garden hose (minimum 5/8 inch diameter) to the water inlet on the pump.
   • Ensure the water source provides a steady flow and pressure (e.g., standard household spigot).
   • Turn on the water supply completely to purge air from the pump and hose.
4. Connect High-Pressure Hose: Attach one end of the high-pressure hose to the pump's high-pressure outlet and the other end to the spray gun. Hand-tighten securely.
5. Select Nozzle: Choose the appropriate quick-connect nozzle for your task and insert it into the spray gun wand. The unit includes 0°, 15°, 25°, 40°, and soap nozzles.

Figure 3.2: Detail of the quick-connect nozzle holder, showing the different color-coded nozzles.

4. Operating Instructions

Follow these steps for safe and effective operation of your Generac pressure washer.

4.1 Starting the Engine:

1. Ensure the pressure washer is on a level surface and the water supply is fully open.
2. Set the engine switch to the "ON" position.
3. Move the choke lever to the "FULL CHOKE" position (if the engine is cold).
4. Move the throttle lever to the "FAST" position.
5. Pull the recoil starter handle firmly until the engine starts.
6. Once the engine starts, gradually move the choke lever to the "RUN" position.
7. Allow the engine to warm up for a few moments.

4.2 Using the Pressure Washer:

1. Test Spray: Before cleaning, aim the spray gun at a safe, inconspicuous area to test the spray pattern and pressure.
2. Cleaning Technique: Hold the spray gun at an angle to the surface and maintain a consistent distance. Start with a wider spray pattern (e.g., 40° nozzle) and adjust as needed.
3. Detergent Application:
   • Place the detergent siphon tube into a container of pressure washer-safe detergent.
   • Install the black soap nozzle onto the spray gun. This nozzle activates the detergent injector.
   • Apply detergent to the surface, working from bottom to top. Allow it to dwell for the recommended time (check detergent instructions).
   • Remove the soap nozzle and replace it with a high-pressure nozzle (e.g., 25° or 15°) for rinsing.
4. Adjusting Pressure: The pressure control valve allows for fine-tuning the output pressure for different cleaning tasks. Turn clockwise for higher pressure, counter-clockwise for lower pressure.

Figure 4.1: The ergonomic spray gun, designed for comfort during extended use, featuring quick connections.

4.3 Shutting Down:

1. If using detergent, flush the system with clean water for a few minutes to prevent chemical buildup.
2. Turn off the engine switch.
3. Turn off the water supply.
4. Squeeze the spray gun trigger to release any remaining pressure in the system.
5. Disconnect the garden hose and high-pressure hose.

5. Maintenance

Regular maintenance ensures optimal performance and extends the life of your pressure washer. Always perform maintenance with the engine off and cool, and the spark plug wire disconnected.

5.1 Engine Maintenance:

• Check Engine Oil: Check oil level before each use. Change oil after the first 5 hours of operation, then every 50 hours or annually.
• Clean Air Filter: Inspect the air filter regularly. Clean or replace if dirty.
• Inspect Spark Plug: Check the spark plug annually or every 100 hours. Clean or replace as needed.
• Fuel System: Use a fuel stabilizer if storing the unit for more than 30 days. Drain the fuel tank and carburetor if storing for longer periods.

5.2 Pump Maintenance:

• Flush Pump: After each use, especially after using detergent, flush the pump with clean water for several minutes.
• Winterization: If storing in freezing temperatures, winterize the pump using a pump saver solution or non-toxic antifreeze to prevent damage.
• Inspect Hoses and Connections: Regularly check high-pressure hoses, garden hoses, and connections for leaks, cuts, or wear. Replace damaged components immediately.

5.3 Storage:

• Clean the exterior of the pressure washer.
• Drain all water from the pump and hoses.
• Store the unit in a clean, dry, and protected area. The folding handle and collapsible bucket holder allow for compact storage.

Figure 5.1: The pressure washer with its handle folded, demonstrating its compact storage capability.

6. Troubleshooting

This section provides solutions to common operational issues. For problems not listed here, contact customer support.

Common Issues and Solutions:

7. Specifications

Detailed technical specifications for the Generac PRO 8871 XC Commercial Pressure Washer.

8. Warranty and Support

8.1 Manufacturer's Warranty:

This Generac PRO 8871 XC Commercial Pressure Washer comes with a 3-Year Limited Warranty. Please refer to the warranty card included with your product for full terms and conditions, including coverage details and limitations. Keep your proof of purchase for warranty claims.

8.2 Customer Support:

For technical assistance, parts, or warranty inquiries, please contact Generac Customer Service. Visit the official Generac website for the most current contact information, including phone numbers and online support resources.

Online Resources: www.generac.com