FIRMAN H08051 Dual Fuel Portable Generator

1. Safety Information

Always read and understand the operator's manual and all safety labels before operating the generator. Failure to follow instructions could result in serious injury or death.

1.1 Carbon Monoxide Hazard

WARNING: Generator exhaust contains carbon monoxide, a colorless, odorless, poisonous gas that can kill you. Operate the generator ONLY outdoors in a well-ventilated area, away from windows, doors, and vents. Never operate in an enclosed area, such as a garage or basement.

1.2 Fire Hazard

• Gasoline and propane are extremely flammable.
• Refuel only in a well-ventilated area with the engine off and cool.
• Do not overfill the fuel tank.
• Keep flammable materials away from the generator.

1.3 Electrical Shock Hazard

• Do not operate the generator in wet conditions or damp locations.
• Always connect the generator to a properly installed transfer switch or use appropriate extension cords.
• Ensure the generator is properly grounded to prevent electrical shock.

1.4 General Safety Precautions

• Keep children and pets away from the generator during operation.
• Do not touch hot surfaces, such as the engine or muffler.
• Ensure the generator is placed on a firm, level surface to prevent tipping.
• Do not attempt to modify the generator.

2. Product Overview

The FIRMAN H08051 is a powerful dual fuel portable generator designed for emergency backup power, job sites, RVs, and outdoor activities. It offers flexibility with both gasoline and propane fuel options.

2.1 Key Features

• Dual Fuel Capability: Operates on gasoline or propane (LPG).
• High Power Output: 10,000 Starting Watts / 8,000 Running Watts (Gasoline); 9,050 Starting Watts / 7,250 Running Watts (LPG).
• Electric Start: For convenient and easy starting.
• Engine: 439cc 4-Stroke OHV Engine.
• Fuel Tank Capacity: 8.0 Gallons (30 Liters).
• Extended Run Time: Up to 12 hours at 50% load.
• Durable Construction: Compact tubular roll cage frame design.
• Portability: Ergonomically designed padded handle and 10" never-flat wheels.

2.2 Included Components

• Portable Generator
• Tool Kit
• 5.5 Ft. LP (Propane) Regulator / Hose
• Padded U-Shaped Handle
• Oil Funnel
• Engine Oil
• Battery

Image: Key features of the FIRMAN H08051 Dual Fuel Portable Generator, highlighting starting and running watts, tank size, engine displacement, and electric start capability.

Image: A visual representation of the accessories included with the FIRMAN H08051 generator, such as the tool kit, LPG hose, handle, oil funnel, wheels, engine oil, and battery.

2.3 Control Panel

The control panel provides access to all necessary functions for operating the generator.

• Fuel Selector Switch: Used to select between gasoline and LPG.
• Electric Start Button: For push-button starting.
• Indicator Light: Shows generator status (red for priming, green for running).
• Outlets: Includes 120V 20A GFCI, 120V 30A Twist-Lock, 120V/240V 30A Twist-Lock, and 120V/240V 50A Twist-Lock receptacles.
• LPG Inlet: Connection point for the propane hose.
• Ground Terminal: For proper grounding of the generator.

3. Setup

3.1 Unpacking and Assembly

• Carefully remove the generator and all components from the packaging.
• Attach the wheels and support legs as per the assembly instructions provided in the box.
• Install the padded U-shaped handle.

Image: The FIRMAN H08051 generator equipped with its wheels and handle, demonstrating its portable design.

3.2 Adding Engine Oil

• Place the generator on a level surface.
• Remove the oil fill cap/dipstick.
• Using the provided oil funnel, slowly add the recommended engine oil (included) until the oil level reaches the 'H' (High) mark on the dipstick. Do not overfill.
• Securely replace the oil fill cap/dipstick.

3.3 Connecting the Battery

• Connect the battery cables to the battery terminals. Ensure correct polarity (red to positive, black to negative).
• Tighten the connections securely.

3.4 Grounding the Generator

• Connect the generator to an appropriate ground using a 12 AWG minimum copper wire between the generator ground terminal and a copper rod driven into the ground. This helps prevent electrical shocks.

4. Operating Instructions

4.1 Fueling the Generator

• Gasoline: Fill the 8.0-gallon tank with clean, fresh, unleaded gasoline (minimum 87 octane, less than 10% ethanol).
• Propane (LPG): Connect the provided 5.5 ft. LP hose and regulator to the generator's LPG inlet and to a propane tank. Ensure all connections are tight.

4.2 Starting the Generator

Ensure no electrical devices are plugged into the generator before starting.

• 1. Select Fuel: Turn the Fuel Selector Switch to the desired fuel type (Gas or LPG).
• 2. Choke: Move the choke lever (located on the engine) to the 'START' position.
• 3. Start Engine:
  • Electric Start: Press and hold the Electric Start button for up to 3 seconds. The indicator light will turn red during priming.
  • Pull Start: Pull the starter cord slowly until resistance is felt, then pull rapidly.
• 4. Run: Once the engine starts, immediately move the choke lever to the 'RUN' position. The indicator light should turn green.

4.3 Connecting Electrical Loads

• Once the generator is running smoothly and the indicator light is green, you can plug in your electrical devices.
• Do not overload the generator. Refer to the specifications for maximum wattage and amperage.
• Use appropriate extension cords for outdoor use.

Image: A user connecting an electrical cord to the generator, illustrating its use in an outdoor environment.

4.4 Stopping the Generator

• 1. Remove Loads: Unplug all electrical devices from the generator.
• 2. Turn Off Fuel: Turn the Fuel Selector Switch to the 'OFF' position. If using LPG, also close the valve on the propane tank.
• 3. Turn Off Engine: Allow the engine to run until it stops from fuel starvation. This helps prevent fuel system issues.

5. Maintenance

Regular maintenance ensures the longevity and reliable operation of your generator.

5.1 Engine Oil

• Check the engine oil level prior to each use or every 8 hours of operation.
• Change the engine oil after the first 5 hours of operation (break-in period), and then every 50 hours or annually thereafter.

5.2 Air Filter

• Inspect the air filter every 50 hours or annually. Clean or replace if dirty.

5.3 Spark Plug

• Inspect the spark plug every 100 hours or annually. Clean or replace as needed.

5.4 Fuel System

• Use fresh, unleaded gasoline with a minimum 87 octane rating and less than 10% ethanol.
• For long-term storage (over 30 days), add a fuel stabilizer to the gasoline or drain the fuel tank and carburetor.
• Always turn off the LPG resource when the generator is not in use.

6. Troubleshooting

7. Specifications

• Model Name: H08051
• Brand: Firman
• Starting Wattage: 10000 Watts (Gas) / 9050 Watts (LPG)
• Running Wattage: 8000 Watts (Gas) / 7250 Watts (LPG)
• Engine Type: 4 Stroke, 439 Cubic Centimeters (CC)
• Fuel Type: Gas / LPG
• Power Source: Propane-powered (also Gasoline)
• Voltage: 120V / 240V
• Frequency: 60 Hz
• Tank Volume: 8 Gallons
• Total Power Outlets: 4 (various types)
• Ignition System Type: Electric Start
• Product Dimensions: 29.9"L x 27.5"W x 26.1"H
• Item Weight: 1 pounds (Note: This weight seems incorrect for a generator of this size and power. Please refer to product packaging or official website for accurate weight.)
• Material: Steel
• Color: Black/Gray/Yellow
• UPC: 840876180518

Image: Technical drawing showing the dimensions of the FIRMAN H08051 generator.

8. Warranty and Support

The FIRMAN H08051 Dual Fuel Portable Generator comes with a 3-Year Manufacturer Warranty.

For technical assistance, parts, or warranty claims, please contact Firman customer support. Refer to your product registration card or the official Firman website for the most current contact information.