How Do You Start Lawn Mower

If you’re wondering how do you start lawn mower, you’re not alone. Starting a lawn mower successfully often comes down to following a specific sequence of steps for your model. Whether it’s your first time or you’re troubleshooting a stubborn machine, this guide will walk you through every step for all common types of mowers.

We’ll cover push mowers, riding mowers, and electric models. You’ll learn the pre-start checks, the exact pulling or pushing procedure, and what to do if it won’t start. Let’s get your mower running.

Before you pull the cord or turn the key, there are essential steps you must take. Skipping these can prevent starting or even damage the engine. Always perform these checks in a well-ventilated area, on a flat, clear surface.

Essential Pre Start Checks And Safety

Your safety and the mower’s health depend on a quick pre-operation routine. This takes just a minute but saves a lot of frustration.

Check The Oil Level

Most small engines have a dipstick. Wipe it clean, insert it fully without screwing it in, and check the level. Add oil if it’s low, using the type recommended in your manual. Running with low oil can destroy the engine.

Inspect The Air Filter

A dirty air filter chokes the engine. Remove the filter cover and check the paper or foam element. Tap out debris or replace it if it’s very dirty. A clean filter helps the engine breathe and start easily.

Verify Fuel Level And Quality

Ensure there is fresh gasoline in the tank. Old fuel, left over from last season, is the number one cause of starting problems. For best results, use fuel stabilized or drain the tank for long-term storage.

Clear The Mowing Deck And Area

Remove any sticks, toys, or debris from the lawn. Check under the mower deck for caked-on grass, which can impede the blade. Always clear your work area before starting.

How To Start A Push Reel Lawn Mower

Reel mowers are the simplest type, powered solely by your push. There is no engine to start, but proper setup is key for a clean cut.

Adjust the cutting height to your desired level, usually via a lever near each wheel.
Inspect the blades for damage and ensure they spin freely when you push the mower.
Simply begin walking at a steady pace. The wheels will engage the gears that spin the cutting reel.

How To Start A Gas Powered Push Mower

This is the most common type of mower. The starting procedure is straightforward once you’ve completed your pre-checks.

For Mowers With A Primer Bulb

Locate the primer bulb, a small rubber button on the engine. Press it 2-3 times to draw fuel into the carburetor. Do not over-prime.
If your mower has a throttle or choke lever, set it to the “Choke” or “Start” position.
Firmly grip the starter handle on the cord. With one foot on the mower’s frame for stability, pull the cord briskly. Do not yank it all the way out; use a smooth, strong motion.
Once the engine sputters, move the throttle/choke to the “Run” position and pull again to start.

For Mowers Without A Primer Bulb

Set the throttle or choke lever to “Choke.”
Place your foot on the mower deck for stability.
Pull the starter cord firmly and smoothly. It may take 2-3 pulls.
After it starts, move the lever to “Run.”

How To Start A Self Propelled Lawn Mower

Starting a self-propelled model is identical to a standard push mower. The only difference is engaging the drive system after the engine is running.

Complete all pre-start checks (oil, fuel, air filter).
Prime the bulb if equipped, and set the choke.
Start the engine using the pull cord as described above.
Once the engine is running smoothly, squeeze the drive control lever (usually on the handle) to engage the self-propel function. Release it to stop moving forward while the engine stays runing.

How To Start A Riding Lawn Mower

Starting a riding mower involves a few more safety steps due to its size and power. Always sit in the seat to start; most have a safety switch that prevents starting otherwise.

Perform the pre-start checks, paying extra attention to tire pressure and fluid levels.
Ensure the parking brake is firmly set.
Set the gear selector to “Park” or “Neutral.”
If the engine is cold, pull the choke knob out or set the throttle to the choke position.
Turn the ignition key to the “On” position. You may need to turn it further to “Glow Plug” for a few seconds if it’s a diesel model.
Turn the key to “Start” and hold until the engine cranks. Release the key once it starts.
After the engine warms for a minute, push the choke knob in or adjust the throttle to the operating speed.

How To Start An Electric Lawn Mower

Electric mowers, both corded and cordless, are the easiest to start. There’s no fuel, oil, or pull cord involved.

Starting A Corded Electric Mower

Ensure the mower is unplugged from the outlet.
Clear the area and check the mower deck.
Plug the extension cord into the mower first, then into a grounded outdoor outlet with GFCI protection.
Hold the safety lever on the handle (often called a “bail”) and press the start button or switch. The blade will begin spinning immediately.

Starting A Cordless Battery Mower

Insert a fully charged battery into the mower’s battery compartment until it clicks.
Hold the safety lever on the handle and press the start button or trigger. Some models require you to press a separate power button first.
The mower is now ready; the blade will spin when you engage the safety lever.

Troubleshooting A Lawn Mower That Won’t Start

If you’ve followed the steps and your mower still won’t start, work through this checklist. Start with the simplest solutions first.

Check the Obvious: Is there gas? Is the spark plug wire connected? Is the battery charged (for electric/riding)?
Old Fuel: Drain and replace with fresh gasoline. Stale fuel loses combustibility.
Spark Plug: Remove the spark plug, reconnect the wire, and rest the metal base against the engine. Pull the starter cord; you should see a blue spark. If not, clean or replace the plug.
Clogged Carburetor: Old fuel can leave gummy deposits. This often requires cleaning by a professional.
Safety Switch Engagement: On riding mowers, ensure you are fully in the seat. On push mowers, ensure the handle is fully engaged if it has a safety switch.
Blade Engagement: On some riding mowers, the engine won’t start if the mower deck is engaged. Ensure the PTO lever is disengaged.

Seasonal Starting Tips

Proper storage is the secret to easy starting next season. Here’s what to do at the end of the mowing year.

Preparing For Winter Storage

Add a fuel stabilizer to a full tank and run the engine for 5 minutes to circulate it, or drain the tank and carburetor completely.
Change the oil and replace the air filter.
Remove the spark plug, add a teaspoon of oil into the cylinder, and pull the cord slowly to coat the interior. Reinstall the plug.
Clean the mower thoroughly, especially the underside.
Store in a dry, covered place.

First Start Of The Season

Check all fluid levels and top up as needed.
Install a new spark plug and air filter if you didn’t in the fall.
If you used stabilizer, you can try starting with the old fuel. If you drained it, add fresh gas.
Follow the standard starting procedure. It may take a few extra pulls to get fuel flowing.

Frequently Asked Questions

Here are answers to some common questions about starting lawn mowers.

How Many Times Should You Prime A Lawn Mower?

Typically, press the primer bulb 2-3 times for a cold start. Over-priming can flood the engine, making it harder to start. If the engine is warm, one press or none at all is usually sufficient.

Why Do I Have To Push The Primer Bulb?

The primer bulb manually draws a small amount of fuel directly into the carburetor’s intake. This gives the engine the initial fuel it needs to fire on the first or second pull, especially when it’s cold.

What Is The Choke For On A Lawn Mower?

The choke restricts air flow into the carburetor, creating a richer fuel mixture for starting a cold engine. Once the engine warms up, you open the choke to allow normal air flow for efficient operation.

Can You Start A Lawn Mower Without A Pull Cord?

Some mowers offer electric start options, which use a battery to turn the engine over. For a standard pull-start mower, the cord is essential. If it breaks, it must be replaced before the mower can be started.

Is It Bad To Pull The Starter Cord Multiple Times?

Pulling the cord repeatedly in a short period without the engine starting can lead to flooding or overheating the starter mechanism. If it doesn’t start after 3-4 pulls, pause and troubleshoot the issue (fuel, spark, choke).