Maintaining your lawn mower is an essential part of ensuring it runs smoothly and lasts for many seasons to come. One of the most important tasks in lawn mower maintenance is regularly changing the oil. For owners of Briggs and Stratton lawn mowers, performing an oil change is relatively straightforward but must be done carefully and on schedule. In this step-by-step guide, we’ll walk you through everything you need to know to change the oil in your Briggs and Stratton lawn mower, ensuring that your mower runs efficiently and reliably for years to come.

Table of Contents:
Why Regular Oil Changes Matter for Your Lawn Mower
Choosing the Right Oil for Your Briggs and Stratton Mower
Tools and Materials Needed for an Oil Change
How to Change Briggs and Stratton Lawn Mower Oil
How Often Should You Change Your Lawn Mower Oil?
Common Mistakes to Avoid When Changing Lawn Mower Oil
Final Tips for Maintaining Your Briggs and Stratton Mower

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Why Regular Oil Changes Matter for Your Lawn Mower?

Changing the oil in your Briggs and Stratton engine parts is crucial for the longevity and efficiency of your lawn mower. The engine oil lubricates all the moving parts inside the engine, preventing friction and wear. Over time, the oil breaks down and becomes contaminated with dirt, debris, and other particles, which can cause the engine to run less smoothly or even lead to severe damage.

 Here are a few reasons why regular oil changes are so important:

  • Improves Engine Performance: Clean oil ensures that your mower’s engine runs at its best, improving fuel efficiency and overall performance.

  • Reduces Wear and Tear: Fresh oil reduces the amount of friction inside the engine, which helps to prevent parts from wearing out prematurely.

  • Prevents Overheating: Oil acts as a coolant, helping to regulate the temperature of the engine. Old, dirty oil can cause the engine to overheat and seize up.

  • Protects Small Engine Parts: Regular oil changes protect crucial small engine parts of your Briggs and Stratton engine parts, ensuring that they remain in good condition over time.

By changing the oil on a regular basis, you can avoid expensive repairs and replacements down the line, ensuring that your Briggs and Stratton lawn mower parts continue to perform optimally.

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Choosing the Right Oil for Your Briggs and Stratton Mower

Choosing the correct oil for your Briggs and Stratton lawn mower parts is essential for optimal performance and longevity. Generally, Briggs and Stratton recommends using SAE 30 motor oil for warmer temperatures and 5W-30 oil for colder climates. Always check the owner’s manual of your specific mower model for oil specifications, as some models may have specific requirements.

 Key considerations when selecting the right oil:

  • Viscosity: Make sure to choose an oil with the correct viscosity for your climate. SAE 30 is ideal for most temperatures above 32°F, while 5W-30 is better for cooler weather.

  • Type of Oil: Synthetic oils may offer better performance, especially in extreme weather conditions, but conventional oils are sufficient for everyday use. Always use oils that meet the manufacturer's requirements for your mower’s engine.

  • Brand: While Briggs and Stratton offer their own oils, there are plenty of high-quality, compatible oils available on the market. Make sure the oil you select is rated for small engines.

Check out: How to Choose the Perfect Lawn Mower for Your Yard: Ultimate Guide

Tools and Materials Needed for an Oil Change

Before starting the oil change process, make sure you have the following tools and materials on hand: 

  • New oil: The correct type and amount of oil for your mower.

  • Oil drain pan: To catch the old oil when draining.

  • Wrench: To remove the drain plug.

  • Funnel: To help pour the new oil without spilling.

  • Rags or paper towels: For cleaning up any messes.

  • Rubber gloves: To protect your hands from oil.

  • Oil filter (if your model has one): Some Briggs and Stratton mowers have an oil filter that may need to be replaced during the oil change.

Having all the necessary lawn mower parts and tools prepared beforehand will make the oil change process much smoother and less time-consuming.

 How to Change Briggs and Stratton Lawn Mower Oil

Changing the oil in your Briggs and Stratton lawn mower is a simple process, but it must be done correctly to ensure the engine operates efficiently. Follow these steps:

Prepare the Mower:

Before you begin, ensure the lawn mower is on a flat surface. It’s best to have the mower on a level area to ensure that the oil drains evenly. If possible, run the mower for a few minutes to warm up the oil; this will make it flow more easily.

Turn Off the Engine:

Always ensure the engine is turned off, and the spark plug is disconnected. This helps avoid any accidental starts during the oil change process.

Locate the Oil Drain Plug:

On most Briggs and Stratton engines, the oil drain plug is located on the underside of the engine. It may be a bolt or a plastic plug, depending on the model. To find the oil drain plug, consult your user manual or look for a small bolt near the bottom of the engine. Some models may even have an oil drain tube that makes the process easier.

Drain the Old Oil:

Place your oil drain pan beneath the engine to catch the used oil. Remove the oil drain plug using a wrench, and let the oil drain completely into the pan. Be sure to let the oil drain for a few minutes to ensure all the old oil is removed.

Replace the Oil Filter (Optional):

If your mower has an oil filter, now is the time to replace it. You may need to remove the old filter and install a new one. Make sure you’re using the correct Briggs and Stratton replacement parts for the filter.

Refill with Fresh Oil:

Once the old oil has fully drained, use a funnel to pour the new oil into the engine. Make sure you fill it up to the appropriate level, as indicated in the owner’s manual. Avoid overfilling, as this can lead to engine problems.

Replace the Drain Plug and Clean Up:

After the oil has been replaced, tighten the oil drain plug securely. Wipe off any excess oil around the engine area and dispose of the used oil properly.

Reconnect the Spark Plug:

Reconnect the spark plug, and you’re ready to go! Start the mower briefly to ensure that the new oil is circulating properly.

How Often Should You Change Your Lawn Mower Oil?

Regular oil changes are a key part of lawn mower maintenance. As a general rule, you should change the oil in your Briggs and Stratton lawn mower at least once per year. However, if you use your mower heavily or in harsh conditions, you may need to change the oil more frequently. For example, if you’re mowing frequently or in dusty conditions, it’s a good idea to change the oil every 50 hours of operation or at the start of each mowing season.

Always check the oil level before each use, and top off if necessary. Dirty or low oil can cause your mower to run inefficiently, which can result in costly repairs.

Common Mistakes to Avoid When Changing Lawn Mower Oil

Changing the oil in your Briggs and Stratton lawn mower can seem straightforward, but there are a few common mistakes that can lead to problems down the road. Here’s what to avoid:

  • Overfilling the Oil: Be careful not to add too much oil. Overfilling can cause the engine to run poorly or even lead to damage. Always check the oil level with the dipstick.

  • Using the Wrong Oil: Using the wrong type of oil or a low-quality oil can lead to poor performance. Make sure you use the right oil as specified in your mower's manual.

  • Not Changing the Oil Often Enough: While it may seem like a hassle, neglecting regular oil changes can lead to engine wear and tear. Stick to a regular maintenance schedule.

  • Not Properly Disposing of Old Oil: Never pour used oil down the drain or throw it in the trash. Used oil should be taken to a recycling center or an auto parts store that accepts oil for disposal.

Also read on: Common Lawn Mower Belt Problems and Their Solutions

Final Tips for Maintaining Your Briggs and Stratton Mower

To keep your Briggs and Stratton lawn mower running smoothly for years to come, here are a few extra maintenance tips: 

  • Check the Air Filter: A clogged air filter can reduce engine performance. Clean or replace the air filter regularly to ensure optimal airflow.

  • Inspect the Spark Plug: The spark plug is responsible for igniting the engine. Check it periodically, and replace it if it looks worn or damaged.

  • Clean the Carburetor: Over time, dirt and debris can clog your small engine carb. Clean or replace it if necessary to keep the engine running smoothly.

  • Lubricate Moving Parts: Regularly lubricate the wheels, levers, and other moving parts to ensure smooth operation.

Proper care of your Briggs and Stratton lawn mower parts will help keep your mower performing at its best, season after season.

 FAQs

Where is a Briggs and Stratton oil drain plug?

The oil drain plug is typically located on the underside of the engine. Check your owner’s manual for the exact location. It may be a bolt or a plastic plug.

 How much oil does a Briggs and Stratton lawn mower take?

The oil capacity varies depending on the model of the mower. Most Briggs and Stratton engines take around 18 to 20 ounces of oil. Always check your owner’s manual for the exact amount.

 How do I drain the oil from my lawn mower?

To drain the oil, remove the oil drain plug or oil fill cap, and allow the oil to drain into a pan. Be sure to dispose of the old oil responsibly.