Installation and maintenance of LPG carburetor kit

In this article, we provide a clear, step-by-step guide to installing your LPG carburetor kit, along with essential maintenance tips

September 12, 2025
BY BISON

If you’ve ever relied on a gasoline generator, you know how costly and inconvenient fuel can be. An LPG carburetor kit offers a smart solution, allowing you to convert your generator to run on liquefied petroleum gas (LPG).

Switching to LPG can save money, improve fuel efficiency, extend engine life, and reduce emissions—making it both cost-effective and eco-friendly. LPG is also cheaper than many other fuels, often costing up to half the price, and it produces less noise, making it ideal for residential and low-noise areas.

In this article, we provide a clear, step-by-step guide to installing your LPG carburetor kit, along with essential maintenance tips to keep your generator running smoothly and safely for years.

Understanding the LPG carburetor kit

Components of an LPG carburetor kit

Mixer/carburetor adapter – blends LPG with air before it enters the engine for combustion.
Regulator (or converter) – reduces the high pressure of LPG from the tank and ensures a steady, controlled fuel flow.
Gas hose and fittings – provide safe, leak-free connections between the LPG tank, regulator, and carburetor.
Shut-off valve – allows quick control of the fuel supply for safety and convenience.
Mounting accessories – brackets, clamps, and seals used for secure installation and stability.

How an LPG carburetor kit works

The LPG carburetor kit modifies the fuel system to deliver LPG instead of gasoline. The regulator lowers LPG pressure, then the mixer combines it with air in the right ratio. This mixture enters the engine cylinders, where it ignites and powers the generator—just like gasoline, but cleaner and more efficient.

LPG vs. traditional fuels

Compared with gasoline and diesel, LPG offers several benefits:

Cost savings – more affordable, especially for frequent generator use.
Cleaner fuel – reduces carbon buildup, keeping the engine in better condition.
Longer engine life – less residue means reduced wear and extended service life.
Lower emissions – produces fewer harmful gases, making it environmentally friendly.
Better storage – has a longer shelf life than gasoline, which degrades over time.

Installation of the LPG carburetor kit

Step 1: Pre-installation preparations

Disconnect the spark plug wire to prevent accidental starting.

Ensure the generator is cool, turned off, and free of gasoline.

Work in a well-ventilated area to avoid inhaling gas fumes.

Keep a fire extinguisher nearby.

Clean the generator and remove dirt or debris around the installation area.

Confirm that the LPG carburetor kit is compatible with your generator model.

Tools and materials required: Wrenches, screwdrivers, pliers, socket set, utility knife, leak detection solution (soapy water), protective gear, fittings, hoses, and accessories listed in the manufacturer’s instructions.

Step 2: Removing the old carburetor

Remove the air filter housing.

Disconnect the gasoline fuel line carefully.

Unbolt and detach the old carburetor from the generator.

Step 3: Installing the new LPG carburetor

Mount the new LPG carburetor in place using the original bolts.

Reattach the throttle linkage for proper engine control.

Securely reinstall the air filter housing.

Secure it with the provided bolts or brackets.

Step 4: Connecting the LPG fuel line

Connect the gas hose from the LPG cylinder to the regulator.

Attach the regulator output to the carburetor mixer inlet.

Tighten all fittings and clamps to prevent leaks.

Optional leak-proof tape can be used to reduce the risk of leakage.

Step 5: First start-up and testing

Slowly open the LPG cylinder valve.

Use soapy water on hose connections and fittings; bubbles indicate leaks—tighten as needed.

Start the generator at idle speed.

Adjust the idle speed screw on the carburetor until the engine runs smoothly.

Monitor the exhaust for any abnormal or excessive emissions.

If adjustment is required, refer to the manufacturer’s instructions for fine-tuning the LPG carburetor kit settings for optimum performance.

Maintenance of the LPG carburetor kit

1. Routine checks

Perform these basic checks regularly:

Inspect hoses, clamps, and connections – look for cracks, wear, or signs of degradation that could cause leaks.
Check for gas leaks – apply soapy water to fittings and joints; bubbles indicate a leak that needs tightening.
Clean or replace filters – keep the air and LPG filters free of dust and debris; replace if clogged.
Tighten bolts and fittings – vibrations can loosen components over time, so ensure everything is secure.

2. Regular servicing

Every few months or after heavy use, carry out the following:

Carburetor cleaning and tuning – use a mild solvent or carburetor cleaner to remove deposits and maintain smooth airflow.
Adjust idle speed and fuel-air mixture – optimize engine performance and fuel economy as per manufacturer guidelines.
Check regulator performance – ensure consistent gas pressure; replace the regulator if pressure control weakens.
Replace filters – change LPG filters periodically to prevent impurities from entering the engine.
Inspect safety components – test shut-off valves, pressure relief valves, and the emergency shutdown system for proper function. Check the LPG tank’s expiry date and have it recertified if required.

3. Troubleshooting common issues

Generator won’t start

Ensure the LPG cylinder valve is open and fuel is flowing.
Check the spark plug for dirt or wear.
Clean the carburetor and regulator if clogged.

Engine runs rough or stalls

Adjust the idle screw and fuel-air mixture.
Clean the air filter and carburetor to remove blockages.

Engine shuts down unexpectedly

Inspect fuel hoses and the regulator for leaks or blockages.
Confirm the shut-off valve is open.

Poor fuel efficiency or misfiring

Re-tune the carburetor for the correct air-fuel ratio.
Inspect and replace the spark plug if needed.
Ensure all hoses are sealed properly to prevent gas loss.

Benefits of proper installation and maintenance

Longer engine life: Correct installation and regular maintenance ensure cleaner combustion with fewer carbon deposits, reducing engine wear and extending service life.
Better fuel economy: Proper tuning maintains a balanced air-fuel mixture, enabling the generator to run efficiently while consuming less LPG.
Safe and reliable performance: Secure fittings, regular leak checks, and routine servicing minimize the risk of gas leaks or breakdowns, ensuring safe and dependable operation.

Summary

As a professional LPG carburetor kit manufacturer in China, BISON understands the advantages of converting your generator from gasoline to LPG. Using an LPG carburetor kit and following our LPG carburetor kit installation and maintenance guides, you and your customers can enjoy longer engine life, improved fuel efficiency, lower emissions, and safer overall performance.

If you’re looking to expand your inventory of generator parts to enhance the performance, safety, and sustainability of your customers’ generators, now’s the perfect time to import BISON generator parts from China. Start a business partnership with BISON today to find the right LPG carburetor kit and experience a cleaner, more durable power solution.

FAQs

Is it cheaper to run a generator on LPG?

Yes. While prices vary by location, LPG is generally cheaper than gasoline. It has a higher energy density, so generators running on LPG often consume less fuel for the same power output, reducing overall fuel costs.

How long does LPG last in a generator?

Usage time depends on the gas cylinder size and generator load. For example, 3 kg of LPG can power a generator for about 14 hours, while 12.5 kg can last up to two weeks at 6 hours of use per day.

What are the problems with LPG?

LPG cylinders can explode in a fire, and contact with liquid LPG can cause severe cold burns. In high concentrations, LPG can also displace oxygen and act as a suffocating agent.