How To Get More Power from a Briggs and Stratton Engine

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If you want to get more horsepower out of your Briggs and Stratton engine, you need to take certain steps to optimize the horsepower of the mower’s engine. 

Here are a few things that can make you get more horsepower from your lawn mower engine:

Simple Steps to Get More Power from your Briggs and Stratton Engine

Step One

Remove the flywheel housing from the top of the engine. 

Loosen the bolt that holds the housing over the top of the engine with proper-sized wrenches.

Step Two

Unscrew the bolt holding the governor flap next to the flywheel with a proper-sized wrench. 

If the machine spins too fast, the governor’s flap blows hot and closes the carburetor slightly.

This will decrease the horsepower and speed of the engine.

After unscrewing the governor flap, you can now unhook the spring from the governor to the carburetor. Replace the flywheel housing on the engine.

Step Three


Check the muffler. 

A muffler that is not cracked or properly sealed to the exhaust hole can make you lose horsepower.  

It is important to check if the muffler is tightened to the engine block. 

Check if the gasket is also in good shape and buy a new muffler if the old one is cracked. They are affordable and easy to install.

Step Four


Fill the fuel tank of your machine with high-octane gas. 

Many users use 87 octane gas because it is cheaper but a pricier 92 octane increases the engine power and burns quickly.

Step Five

Maximize the airflow. Your high-power engine requires great airflow, so it is important to replace or clean the air filter of the engine monthly.

How many ccs is a 5hp Briggs and Stratton Engine?


The volume displaced by the piston when it moves from top to bottom in a single movement is 206cc or 2.57 inches.

How Do Briggs & Stratton Engines Work?

Wondering how Briggs and Stratton’s engines work? They produce both 2-cycle and 4-cycle lawn mower engines. 

The 2-cycle engine can propel your mowing machine in one crankshaft revolution and two strokes of the piston.

The majority of small engines produced are 4-cycle engines. 

If your lawn mower has a 4-cycle engine, it requires four strokes of the piston to complete a crankshaft revolution.

Can Spark Plugs Increase Horsepower?

Yes, spark plugs can increase your engine’s horsepower but it won’t exceed one or two percent increment, even if you are replacing worn out spark plugs with new ones. 

In this case, your increment will just restore it to its peak performance.

What Are Some Common Problems with Briggs?

They are known to develop some common problems like engine overheating, engine not starting and poor running of the engine while in use. 

They are not serious issues and they can be repaired by the owner without seeking the help of an expert.

Where Can I Find my Briggs & Stratton Engine’s Horsepower or Torque Rating?

You can find the torque value or gross horsepower labeled on your engine. To get your engine horsepower, just look for a number with “cc” or “hp”.

What Kind of Oil Do Briggs and Stratton Use?

Briggs and Stratton recommend using SAE 5W-30, 10W-30, 30 or synthetic 5W-30 for their engines. 

The company offers a wide range of engine oils including Briggs & Stratton Lawn Mower oil for engine use.

How Does Briggs and Stratton Carburetor Work?

The job of a carburetor is to gather the fuel and mix it with the air before it delivers it to the lawn mower engine.

Depending on the running speed, the carburetor delivers different ratios of gas and air. The diaphragm which is a part of a carburetor also regulates the fuel in the mixture.