INSTALLATION

Battery Connection

The Home Generator System is supplied with a 12 Volt DC, AGM type, 33 Amp-Hour, valve regulated battery. It is a sealed, lead-acid rechargeable battery. It is installed in the unit and the battery cables are connected at the factory.The unit’s 15 Amp fuse, which isolates the battery and prevents the unit from starting, has been removed for shipping.The battery will lose some charge charge prior to installation of the generator. If battery voltage is below 12 Volts, charge the battery.

IMPORTANT: If battery voltage is below 5 Volts, it may not take a charge and you will need a new battery.

Charging the Battery

If it is necessary to charge the battery, proceed as follows:

1.Pull service disconnect from disconnect box.

2.Remove the 15 Amp fuse from the control panel.

3.Disconnect the negative battery cable to the negative battery terminal (indicated by NEGATIVE, NEG, or (-).

CAUTION

Failure to disconnect negative battery cable will result in equipment failure.

DO NOT attempt to jump start the battery.

Damage to equipment resulting from failure to follow this instruction will void warranty.

4.Charge battery with battery charger at 2 Amps until battery holds 12 Volts.

NOTE: With the battery installed and utility power available to the Automatic Transfer Switch, the battery receives a trickle charge whenever the engine is not running.This process may take up to 72 hours to fully charge a battery from 5 Volts.The trickle charge cannot be used to recharge a battery that is completely discharged.

5.Connect the negative battery cable to the negative battery terminal (indicated by NEGATIVE, NEG, or (-).

6.Ensure hardware on both positive and negative battery terminals is secure.

7.Reinstall the 15 Amp fuse in the control panel.

CAUTION

Installing the 15A fuse could cause the engine to start.

DO NOT install the 15 Amp fuse until all plumbing and wiring has been completed and inspected.

8.Reinstall service disconnect in disconnect box.

Servicing the Battery

If it is necessary to service the battery, proceed as follows:

1.Pull service disconnect from disconnect box.

2.Remove the 15 Amp fuse from the control panel.

3.Service or replace battery as required.

4.Connect the red battery cable to the battery positive terminal (indicated by POSITIVE, POS, or (+).

5.Connect the negative battery cable to the negative battery terminal (indicated by NEGATIVE, NEG, or (-).

DANGER

Storage batteries give off explosive hydrogen gas during recharging.

Slightest spark will ignite hydrogen and cause explosion.

Battery electrolyte fluid contains acid and is extremely caustic.

Contact with battery contents will cause severe chemical burns.

A battery presents a risk of electrical shock and high short circuit current.

DO NOT dispose of battery in a fire.

DO NOT allow any open flame, spark, heat, or lit cigarette during and for several minutes after charging a battery.

DO NOT open or mutilate the battery.

Wear protective goggles, rubber apron, and rubber gloves.

Remove watches, rings, or other metal objects.

Use tools with insulated handles.

6.Ensure hardware on both positive and negative battery terminals is secure.

7.Reinstall the 15 Amp fuse in the control panel.

8.Reinstall service disconnect in disconnect box.

Fuel Supply System

Ensure that all fuel pipe connections are tight, secure and without leaks.

Ensure that all gas line shutoff valves are OPEN and that adequate fuel pressure is available whenever automatic operation is desired.

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Briggs & Stratton 40221 manual Battery Connection, Fuel Supply System, Charging the Battery, Servicing the Battery

40221 specifications

The Briggs & Stratton 40221 is a prominent model of portable generator that is well-regarded for its reliability, performance, and innovative features. Designed for both home and professional use, this generator stands out due to its robust construction and versatile applications, making it an excellent choice for homeowners, contractors, and outdoor enthusiasts alike.

One of the main features of the Briggs & Stratton 40221 is its powerful 305cc engine, which delivers a notable output of 3,250 running watts and a peak wattage of 3,750 watts. This capacity ensures that it can effectively power essential appliances during outages or provide energy for tools and equipment on job sites. The generator’s ability to handle a variety of loads makes it suitable for a range of applications, from powering refrigerators and lights to operating power tools.

The Briggs & Stratton 40221 utilizes advanced inverter technology, which is designed to produce clean and stable power. This technology allows users to safely run sensitive electronics such as laptops and smartphones without the risk of damage. The inverter system also provides excellent fuel efficiency, meaning users can run the generator longer on a single tank of gas, enhancing convenience and cost-effectiveness.

Another key characteristic of the 40221 is its lightweight and portable design. Equipped with convenient folding handles and solid rubber wheels, it can be easily transported to job sites, campsites, or stored away during periods of non-use. The generator’s compact frame doesn’t compromise its durability; it is built to withstand outdoor conditions, thanks to its reinforced structure and weather-resistant design.

Safety features are a fundamental aspect of the Briggs & Stratton 40221. It comes with an Automatic Voltage Regulation (AVR) system that helps maintain consistent power output while protecting connected devices from voltage spikes. Additionally, it includes built-in circuit breakers to prevent overload and a low-oil shutdown feature, which stops the engine to avoid damage when oil levels get too low.

The Briggs & Stratton 40221 is equipped with multiple outlets, including 120V AC outlets and a 12V DC outlet for straightforward connectivity to various devices. With user-friendly controls and a clear display for monitoring fuel levels and runtime, this generator is designed for ease of use, appealing to both seasoned and novice users.

In summary, the Briggs & Stratton 40221 combines power, efficiency, portability, and durability into a single unit, making it a practical choice for anyone needing reliable backup power or on-the-go energy solutions. Whether for emergencies or everyday use, it delivers dependable performance that stands the test of time.