If you want to upgrade your Briggs & Stratton 5hp engine’s carburetor, you have two popular options. To improve fuel efficiency, you can use the XIAMI high-performance carburetor. In addition, for improved engine performance, eStarPro’s carburetor is a good option. Now, to upgrade the carburetor, gather the necessary tools and remove the old carburetor. Install the new carburetor and after that test the engine as needed for optimal performance.

That’s the short version. To know detailed factors about upgrading the carburetor of the Briggs & Stratton 5hp engine, read the whole article.

Key Takeaways

  • Signs of a potential carburetor upgrade include corrosion, leaks, gasket issues, and debris buildup. You may also notice air filter problems, fuel-air ratio imbalance, and rough engine performance.
  • You can upgrade a 5hp Briggs and Stratton carburetor by following some easy steps.
  • Upgrading to a high-performance carburetor offers increased engine power, better performance, and adjustability features.

Briggs And Stratton 5hp Carburetor Upgrade

There are several carburetors in the market that you can choose to upgrade your existing carburetor. However, not all carburetors are compatible with 5 hp engines. 

You will find two high-performance carburetors in this section that are both compatible and high-performance.

One such carburetor is the High Performance Carburetor for Briggs & Stratton produced by the brand XIAMI

This carburetor is a good upgrade for Briggs and Stratton 5HP engines because:

  • Specifically designed for Briggs and Stratton 5HP engines, ensuring a proper fit.
  • It enhances fuel and air mixing, potentially improving fuel efficiency.
  • Keeps the engine running smoothly, reducing vibrations and ensuring stability.
  • High-quality and competitively priced for long-lasting performance.
  • Replace the stock carburetor without the need for additional components.
Product NameFeatures
XIAMI’s High Performance Carburetor for Briggs & StrattonImproves fuel efficiencySmooth engine operationReduce vibration and maintain stability

Another carburetor that is a good fit for 5hp Briggs and Stratton engines is High-Performance Carburetor Fit for Briggs & Stratton made by the brand eStarPro.

This product is a good upgrade for 5HP Briggs & Stratton engines because:

  • Specifically designed for Briggs & Stratton 5HP engines, including various series, making it a reliable fit.
  • It’s a brand-new, direct replacement with a mounting gasket for easy installation, ensuring a hassle-free upgrade.
  • Offers an affordable alternative to maintain or enhance engine performance without breaking the bank.
  • Replaces old Briggs part numbers and is 100% inspected before shipping, assuring high-quality aftermarket parts for maximum performance.
Product NameFeatures
eStarPro’s High-Performance Carburetor Fit for Briggs & StrattonEasy installationEnhance engine performanceHigh quality parts

You can also replace the carburetor with one that uses fuel that comes straight from the engine rather than pumping it. This will lead to a longer battery life and a simpler system. Finally, You can also buy a replacement carburetor from Briggs & Stratton Store.

Product NameFeatures
GLENPARTS Carburetor for Briggs & Stratton Can be used on specific 133000 L-Head EnginesSupports 5hp Engines for the series such as 112202, 112212
The ROP Carburetor Replacement for Briggs & StrattonSupports 4hp, 5hp, 6hp and 7hp engines30-day return guarantee

Signs You Need A New Carburetor

Here are the indications that your carburetor might need replacement:

Corrosion, Damage, and Leaks: If you notice significant corrosion, physical damage, or fuel leaks on your carburetor, it’s a sign that it may need an upgrade.

Brittle Gaskets: Brittle or worn-out gaskets can suggest a problem with the carburetor’s sealing, indicating the need for an upgrade.

Debris Accumulation: If there’s debris buildup in the carburetor, it can obstruct proper fuel and airflow, indicating that an upgrade might be necessary.

Choke Malfunction: If the choke is not working correctly, it could be a sign that the carburetor needs an upgrade.

Air Filter Condition: A damaged or clogged air filter can disrupt the air-fuel mixture, potentially leading to a carburetor upgrade.

Imbalanced Fuel-Air Ratio: Engine issues resulting from improper fuel or air delivery could mean the carburetor needs an upgrade.

Rough Engine Performance: If the engine runs roughly, lacks power, or hesitates during acceleration, it is time for an upgrade.

Exhaust Smoke and Fuel Leaks: Noticeable exhaust smoke or visible fuel leaks from the carburetor area can be signs that an upgrade is necessary.

If you observe multiple of these signs, it’s a strong indication that your carburetor requires a new upgrade.

carburetor requires
Source: Amazon

Step-By-Step Process to Upgrade A Carburetor

This step-by-step process explains how to upgrade from an old 5hp Briggs and Stratton carburetor to a new one. Using this guide you can easily complete the process yourself. 

Step 1: Gather Tools and Materials

Before you begin, ensure you have the necessary tools and materials. This includes:

  • a new carburetor
  • a gasket (if not included with the carburetor)
  • a razor blade or scraper
  • a socket and wrench set
  • pliers
  • a spring (if needed)

Step 2: Prepare the Work Area

Set up your work area with enough space to comfortably work on the engine. Ensure you have good lighting and all the tools within reach.

Step 3: Remove the Old Carburetor

  • If applicable, take pictures of the carburetor from various angles to help with reassembly.
  • Disconnect the spark plug wire to ensure safety.
  • Locate and remove the bolt at the bottom of the carburetor that attaches it to the engine.
  • Carefully disconnect any linkages or springs connected to the old carburetor. Remember the positions for the purpose of reassembly.

Step 4: Remove The Old Gasket

Gently peel off the old gasket from the carburetor mounting area. Use a razor blade or scraper to clean any remaining gasket material from the surface.

Step 5: Install New Carburetor

  • Place the new gasket onto the mounting area, ensuring it lines up correctly.
  • Position the new carburetor over the gasket and secure it with the bolts. Finger-tighten the bolts initially.

Step 6: Reattach Linkages and Springs

  • Examine the old and new carburetors to identify any differences in linkages or springs.
  • If necessary, modify the new carburetor’s linkages or springs to match the old configuration.
  • Reattach linkages and springs to the new carburetor, ensuring they are secured properly.

Step 7: Tighten Bolts and Reinstall Parts

  • Use a socket and wrench set to tighten the bolts holding the new carburetor in place.
  • If you had to remove the fuel tank to access certain parts, reattach the tank and secure it.

Step 8: Test Engine

  • Reconnect the spark plug wire for testing. In case it is dirty, you can use WD40 to clean the spark plug.
  • If the engine has been sitting for a while, give it a few bursts of starting fluid to aid in ignition.
  • Attempt to start the engine by pulling the starter cord.

Step 9: Check for Proper Functioning

  • Observe the engine’s response to starting fluid and the starter cord.
  • Listen for smooth and consistent engine operation.
  • Monitor the throttle response and ensure that the carburetor adjustments are appropriate.

Step 10: Install Additional Parts

If the engine starts and runs properly, proceed to install any additional parts that were removed, such as air filters or covers.

Step 11: Final Test and Adjustments

  • Give the engine a final test run to ensure that it’s running smoothly.
  • Fine-tune the air-fuel mixture and idle speed if necessary, using the appropriate adjustment screws on the carburetor.

Step 12: Clean Up and Safety

  • Clean up your work area and organize your tools.
  • Double-check that all bolts and components are properly tightened and secured.
  • Ensure safety by disconnecting the spark plug wire before leaving the engine unattended.
Clean Up and Safety
Source: Amazon

Remember that the specifics may vary based on the model and make of the engine, as well as the design of the carburetor. Always consult the engine’s manual for manufacturer-specific instructions and safety guidelines. 

While upgrading, you might also look for ways to fine-tune your carburetor. This will help you achieve competitive performance for various activities. 

Benefits of Upgrading Your Carburetor 

Enhanced Engine Power and Performance:

Choosing a performance carburetor over a stock one brings about heightened airflow and fuel delivery. As a result, the engine generates more horsepower and torque. This translates to swifter acceleration in racing contexts and enhanced towing capability for trucks.

To get more horsepower from your carburetor efficiently, you can follow this helpful video.

Expanded Adjustability Options:

Aftermarket carburetors provide a wider range of tuning and adjustment possibilities tailored to your specific engine requirements. This means quicker engine start-up, smoother idling, and adaptability to diverse weather conditions. Also, it gives an added boost in power and overall performance.

Extended Mileage:

Replacing the carburetor in a vehicle might boost mileage, but it varies based on the carburetor type, the old one’s condition, and the specific vehicle. If the old carburetor is old or worn, a new one can enhance performance and fuel economy.

Modern carburetors have better fuel-air mixing, precise adjustments, and efficient fuel atomization, all helping with performance and fuel efficiency.

If the carburetor was modified, like an aftermarket upgrade, it could also positively affect mileage. Overall, changing a carburetor might or might not improve fuel economy, depending on the previous and new carburetor’s use and care.

Frequently Asked Questions (FAQs):

What Cc Is A 5hp Briggs And Stratton?

In the case of a typical Briggs and Stratton design, it generally requires around 175 cc to achieve a rated 5 shaft horsepower. This specific engine configuration and size play a crucial role in achieving the desired power output. 

What Type of Oil Does A 5-Hp Briggs And Stratton Take?

For all Briggs & Stratton engines, utilize Briggs & Stratton SAE 30W Oil when the temperature is above 40°F (4°C). You should regularly monitor the oil level and be aware that air-cooled engines consume approximately one ounce of oil per cylinder every hour.

How Many Turns to Adjust The Carburetor?

If you have a new or recently rebuilt carburetor, it’s wise to adjust it to the “factory” setting. This can be achieved by turning the idle mixture screws to 1.5-2 turns out and adjusting the idle speed screw to 1-1.5 turns in.


To sum up, upgrading your Briggs & Stratton 5hp engine’s carburetor is a smart move for improved performance. Make sure to follow our precise upgrade process. This will help achieve better engine efficiency and power.

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