Tune Up Your Gas Lawn Mower Like a Pro: Lawn Fly

Team McFly Sep 15, 2023
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man with mower

Disclosure: Some of the links in this article may be affiliate links, which can provide compensation to me at no cost to you if you decide to purchase. As an Amazon Associate, I earn from qualifying purchases.  

Don't Let Your Mower Fizzle Out: Tune Up Now

To maintain your gas lawn mower operating smoothly and effectively, tuning it up is a necessary maintenance operation that should be done regularly. A properly tuned mower will make mowing your lawn simpler and help the mower last longer, and avoid expensive repairs in the future. We'll cover how to tune up your gas lawn mower in detail in this article, along with some frequently asked questions.

Lawn mower oil

A. Change The Oil

Oil replacement is the first step in tuning up your gas lawn mower. If the oil is old and unclean, your mower may run badly and potentially sustain engine damage. To change the oil in your lawn mower,

follow these steps:

  • Find the oil drain plug on the mower's engine's bottom.

  • To catch the used oil, place an oil pan underneath the drain stop

  • Take off the drain plug and let the old oil completely drain

  • Replace and tighten the drain plug

Don't overfill the engine when adding new oil, though. The recommended type and quantity of oil for your mower can be found in the owner's manual. To circulate the fresh oil, turn the engine on and let it run for a few minutes.

man with mower

B. Replace the Air Filter

Your gas lawn mower's air filter aids in preventing dirt and debris from entering the engine, which can harm it and impair performance. The air filter may need to be updated if it accumulates particles over time. To change the air filter in your lawnmower, adhere to these steps:

  • Look for the air filter housing on the side of the mower's engine.

  • Take the old filter out by removing the air filter cover.

  • Look for damage or excessive dirt and particles on the old filter. Replace it with a new one if it is soiled or broken.

  • Replace the cover after installing the new air filter.

spark plug

C. Replace Spark Plug

The gasoline and air mixture in the engine of your gas lawn mower is ignited by the spark plug. If your spark plug is worn out or unclean, your lawn mower may run badly or not start. To replace the spark plug in your lawn mower, follow these steps:

  • Find the spark plug on the engine's top of the lawn mower

  • Pull the spark plug wire straight off the plug to remove it

  • To remove the outdated spark plug, use a spark plug wrench

  • Check for wear and damage on the old spark plug. Change it out for a new one if it is worn out or damaged

  • With the spark plug wrench, install the new spark plug and tighten it firmly

  • The replacement spark plug should have the spark plug wire reattached

man clearing mower deck

D. Cleaning the Deck

Grass clippings and other debris can block the underside of the deck of your gas lawn mower, reducing airflow and resulting in poor mower performance.

To clean the deck of your mower, adhere to these steps:

The air filter should face up as you turn the mower on its side. Remove grass clippings or dirt underneath the deck using a scraper or putty knife.

Rinse the underside of the deck with a garden hose or pressure washer.

Before operating the mower once more, let the deck completely dry.


How often should I have my gas lawn mower tuned up?

A: The gas lawn mower should be tuned up at least once a year, ideally before the start of the mowing season.

How should I fill up my gas lawn mower with oil?

A: To determine what kind and how much oil is ideal for your lawn mower, consult the owner's manual. In most cases, 10W-30 or SAE 30 oil is advised.

What equipment do I need to service my lawn mower?

A: a socket wrench, a spark plug socket, an air filter, oil, fuel filter, a spark plug, and a file for sharpening the blade are all necessary.

Can I service my lawn mower on my own?

A: You can indeed tune up your lawn mower on your own. It's an easy technique that doesn't call for any specialized knowledge.

The lawn mower needs to be tuned up; how long does that take?

A: Depending on how many parts need to be checked or changed, tuning up a lawn mower should take an hour or two.

Can I run my lawn mower on ordinary gas?

A: You may run your lawn mower on ordinary fuel, yes. On the other hand, utilizing gas with a higher octane level might enhance performance and lessen knocking.


A quick and crucial activity, tuning up your lawn mower, may maintain it in good working order and increase its lifespan. These simple actions will help you keep your lawn mower in good working order and always to be available when you need it. You can always have a professional tune-up of your lawnmower if you don't feel comfortable doing it yourself.

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Disclosure:  Some of the links in this article may be affiliate links, which can provide compensation to me at no cost to you if you decide to purchase. As an Amazon Associate, I earn from qualifying purchases.