John deere mower troubleshooting. 11 Reasons Why John Deere D110 Won’t Start(Fixed)

22nd July 2023

Reasons a John Deere Lawn Mower Won’t Start (Lawn Tractor Zero Turn)

Your John Deere mower is a reliable partner in keeping your lawn in top shape, but when it suddenly refuses to start, you may find yourself in quite a predicament.

With the busy season upon us, taking your mower to the dealership for repairs could mean waiting weeks before getting it back — and grass doesn’t stop growing just because your mower is out of commission.

So, what can you do to get your trusty John Deere mower up and running again? Thankfully, there are several things you can check and troubleshoot before resorting to professional help.

From safety switch malfunctions to spark plug problems, here is a list of the most common issues and ways to solve them.

Quick Reference Chart

Please note that this chart is intended as a quick reference guide only. Consult your owner’s manual for specific troubleshooting techniques, and always exercise caution when working on your lawn mower.

Fuel System Issues

When it comes to engine problems, fuel system issues are some of the most common culprits. They can bring your mowing activities to a screeching halt, leaving you scratching your head and wondering where to start.

A well-functioning fuel system is crucial for any engine-operated machinery, and lawn mowers are no exception. Identifying and addressing these issues can save you from unnecessary frustration and prevent further complications down the line.

No Gas in the Tank

First things first, before jumping to conclusions or getting too concerned, take a moment to check if there’s sufficient fuel in the tank.

At times, something as simple as an empty tank can be the root of your lawn mower problems. If it’s running low, simply filling up might do the trick.

With enough fuel to power the engine, you could be back to mowing in no time, enjoying the satisfaction of a freshly trimmed lawn.

However, if you have enough gas and your mower still isn’t starting, it’s time to delve deeper into potential fuel system issues.

Clogged Fuel Filter

One key component to examine is the fuel filter. This small but vital part plays a critical role in ensuring a clean and efficient fuel supply for your mower’s engine.

Over time, debris and contaminants can build up within the filter, obstructing fuel flow and causing your mower to struggle when starting. In cases like this, cleaning or replacing the fuel filter can help get your John Deere lawn mower back on track.

To clean the filter, carefully remove it from the mower and use compressed air or a soft brush to remove any debris.

If cleaning doesn’t solve your problem or the filter appears damaged, consider replacing it with a new one.

Bad or Old Fuel

Gasoline, unlike fine wine, doesn’t age gracefully. As time ticks away, it undergoes a slow but steady transformation that ultimately wreaks havoc on your mower’s engine.

When left sitting for months, volatile components within the fuel evaporate, leaving behind a thick, gummy residue. A substance that was once a powerful propellant now threatens to clog your carburetor and render your mower lifeless.

“But wait,” you might say, “my John Deere ran just fine last season!” True, but even the most reliable machines can fall victim to old fuel’s insidious grasp.

Consider this: gasoline begins to degrade after just 30 days. It means the fuel resting in your tank all winter long has slowly transformed into a sticky sludge, ready to bring your mowing adventures to a grinding halt.

If you confirm it is the root of your starting problems, drain the remaining old fuel from the tank and dispose of it safely. Then, give your carburetor a thorough cleaning to eliminate any lingering gunk. Finally, fill up with fresh gasoline — preferably one mixed with a stabilizer — and revel in the sweet sound of a smoothly running engine.

To prevent future fuel-related mishaps, make it a habit to empty your John Deere’s tank before storing it away for extended periods. A simple act that takes minutes can save you hours of frustration and costly repairs.

Faulty Fuel Cap

The fuel cap may seem inconsequential, but it plays a vital role in maintaining proper pressure within the gas tank.

When functioning correctly, this unassuming piece allows air to flow in while preventing fuel vapors from escaping. At the same time, when the cap’s vent becomes clogged or damaged, it can throw a wrench in that delicate balance.

So how does a faulty fuel cap stop your beloved John Deere from roaring to life? The answer lies in the vacuum created by an unvented gas tank.

As fuel is drawn from the tank during operation, air must replace it to maintain equilibrium. A blocked vent prevents air from entering, resulting in negative pressure that starves the engine of its much-needed gasoline.

Identifying and remedying a faulty fuel cap is as simple as following these steps:

Inspect for Damage: Examine your fuel cap for cracks or signs of wear that could compromise its integrity.
Check the Vent: Ensure the tiny hole on top of the cap is clear of debris or obstructions.
Test Replace: If issues persist after cleaning and inspecting the cap, consider investing in a replacement.

Bad Fuel Pump

The fuel pump transfers fuel from the tank to the engine, providing that essential lifeblood for your mower’s roaring performance. But when the fuel pump turns treacherous, your mower might just give up the ghost.

So, how do you know if a bad fuel pump is the culprit behind your mower’s sudden demise? Look out for these telltale signs:

Sudden power loss: If your John Deere mower loses power while operating, only to regain it momentarily before quitting altogether, a faulty fuel pump could be starving your engine of its much-needed sustenance.
Engine sputters and stalls: An erratic fuel supply caused by a failing pump can result in your engine stuttering or stalling unexpectedly. This situation can leave you with an uneven cut or, worse, stuck halfway through the job!
No-start condition: Sometimes, a bad fuel pump will refuse to cooperate from the get-go. Your faithful beast simply won’t start despite your best efforts, leaving you scratching your head and cursing under your breath.

And here is a list of the best ways to conquer this insidious foe:

Inspect and test: Check your fuel lines and connections for leaks or damage. You can also test the fuel pump by disconnecting the fuel line from the carburetor and turning the engine over. If little or no fuel comes out, it’s time to replace that dastardly pump.
Fuel filter fiasco: A clogged fuel filter can mimic the symptoms of a bad pump. Make sure you replace it regularly to avoid any unnecessary heartache.
The last resort — replacement: If all else fails and your fuel pump is truly beyond salvation, it’s time for a transplant. Replacing it with a fresh, new pump will breathe life back into your John Deere mower and send you back on your merry mowing way.
Preventative care: To keep your fuel pump in excellent shape, make it a habit to use fresh, high-quality fuel and store it properly. Regular maintenance checks will also go a long way in ensuring your mower remains the envy of the neighborhood.
Part Number:AM109212 AM106164 AM101074 49040-2066,please check the part number before ordering!
Fit for 240 245 260 265 285 320 Lawn and Garden Tractors
Fit for 108 111 111H and 112L Lawn Tractors,Compatible with Kawasaki FC540 FC420V Engine

Spark Plug Problems

The spark plug is an essential component of your mower’s engine. As the primary catalyst for igniting the fuel-air mixture, it initiates combustion, allowing the engine to power up and run smoothly.

When this vital component malfunctions, it can lead to starting issues and adversely impact your mower’s efficiency. Besides preventing your mower from starting, a faulty spark plug may cause other problems, such as poor fuel economy, reduced power output, and engine misfires.

Loose Spark Plug Wire

Begin by taking a look at the spark plug wire. Ensure it’s securely connected to the spark plug, as a loose or disconnected wire can impede proper functioning.

If the wire appears to be in good shape and properly attached, proceed to inspect the spark plug itself.

Dirty or Damaged Spark Plug

To assess the spark plug’s condition, remove it from the engine and carefully examine it, paying attention to any indication of corrosion or fouling. Gently remove debris buildup using a wire brush, and set the electrode gap according to your lawn mower’s specifications.

Additionally, look for visible signs of wear or damage. This may include cracks in the ceramic insulator, damaged electrodes, or deposits caused by oil, carbon, or fuel.

If your spark plug is visibly worn out or damaged, it’s time to replace it with a new one. Keep in mind that experts recommend replacing spark plugs periodically as part of regular maintenance, typically every 100 hours of operation or once per mowing season.

Carburetor Complications

Your lawn mower’s carburetor is responsible for mixing the right proportions of air and fuel to achieve combustion. Still, like any other engine part, the carburetor is susceptible to wear and tear over time.

Dirt, debris, and the occasional buildup of gunk can all lead to malfunctions and negatively impact your mower’s performance.

If you suspect your carburetor might be at the root of your mower’s issues, there are several steps you can take to address the problem.

Dirty Carburetor

One of the first things to try is cleaning your carburetor with a designated cleaner. This specially formulated solution removes dirt and deposits that may have accumulated inside the component.

To perform the task effectively, you’ll need to disassemble the carburetor according to the manufacturer’s instructions, clean each part with the cleaner, and reassemble it.

Faulty Carburetor

In some cases, cleaning may not be enough to resolve the issue.

Replacing the entire carburetor might be necessary if your mower still refuses to start or exhibits poor performance after a thorough cleaning.

You can purchase a new carburetor from a reliable retailer or ask a professional mechanic to help you find a suitable replacement.

That being said, replacing a carburetor can be a complex task, particularly if you lack experience with engine repairs. Because of that, it’s often best to seek the assistance of a qualified mechanic who can diagnose and fix the problem.

Dead Battery

If your John Deere lawn mower is equipped with an electric starter, a drained battery could be the reason for your troubles.

The first thing you should do is to check the battery connections. They should be clean and securely fastened. Dirty or loose connections can hamper the flow of electricity from the battery to the starter, making it seem like the battery is dead when it might not be.

If everything looks good with the connections, it’s time to test the battery. You can do this using a voltmeter or taking it to a local auto parts store offering free battery testing.

If your battery turns out to be dead, it’s time for a replacement.

Remember that batteries can lose their charge over time, especially during long periods of inactivity, such as throughout the winter months when lawn mowing is not required. This loss of charge can lead to a weakened or completely dead battery when you’re ready to begin mowing again.

To avoid this issue in the future, invest in a trickle charger. This device is designed to maintain your battery’s charge throughout periods of inactivity by providing a slow, steady flow of electricity. It will help keep your battery charged and ready for action whenever you need it.

Bad Ignition Switch

The ignition switch is the gatekeeper of your mower’s engine, controlling the flow of electricity from the battery to the starter. When it works seamlessly, your mower leaps into action like an eager lion. But when it goes rogue, it becomes a silent saboteur, leaving you stranded in a sea of grass.

Here are telltale signs your John Deere has become a victim of a bad ignition switch:

Playing Dead: If turning the key results in no response (i.e., no clicks, no whirring), the ignition switch could be the villain in this story.
Flickering Lights: When your mower’s headlights or dashboard lights flicker or fade when turning the key, it indicates an internal issue with the switch.
Hot to the Touch: After attempting to start your mower, touch the ignition switch (carefully!). If it feels unusually warm or hot, there might be an electrical issue at hand.
The Key Conundrum: Is your key refusing to turn smoothly or getting stuck in the ignition? It could be a sign that the switch’s internal components are damaged or worn out.

If you notice any of these signs, it might be time to replace the ignition switch. Consult your owner’s manual or seek professional assistance to ensure you’re following the correct steps for your specific model.

Safety Switch Malfunctions

Safety switches are a crucial component of modern lawn mowers, including the John Deere series. These switches have been specifically designed to protect the operator and the mower from potential harm or damage.

Nonetheless, they can fail or become defective, preventing your mower from starting.

Faulty Seat Switch

To troubleshoot this problem, begin by examining the seat switch. This particular switch ensures the engine will only start when someone is properly seated on the mower.

If the seat switch is malfunctioning, it may prevent the engine from turning over even when you’re in the correct position. Test the seat switch for proper function and consider replacing it if necessary.

Bad Blade Engagement Switch

In addition to the seat switch, other safety switches on your John Deere lawn mower could be causing issues.

One of these is the blade engagement switch. This switch is responsible for activating and deactivating the cutting blades.

A faulty blade engagement switch might send mixed signals to the engine, preventing it from starting even when the blades are disengaged. Again, inspect this switch for any signs of wear or damage and replace it if needed.

Damaged Parking Brake Switch

Lastly, take a look at the parking brake switch. This safety mechanism ensures your mower won’t start unless the parking brake is engaged, avoiding any unintentional movement during startup.

If the parking brake switch is malfunctioning or damaged, it could hinder your mower’s ability to start even if everything else is in working order. Check this switch thoroughly and replace it if required.

Clogged Air Filter

As essential as oxygen is for humans, it is equally vital in keeping your mower’s engine alive and kicking. And just like we struggle when there’s no fresh air to breathe, your John Deere will gasp for life if its air filter is clogged with dirt or dust.

So how does a clogged air filter manage to bring your mower to its knees?

It’s simple, really. The air filter works like a guardian angel for your engine, filtering out impurities from the air before they can enter the combustion chamber.

When the filter becomes clogged, it severely restricts the airflow, causing the engine to work harder and consume more fuel. Eventually, this lack of oxygen can lead to a weakened performance or prevent your mower from starting altogether.

But fear not! Restoring that vibrant vigor to your verdant warrior is often a quick fix.

Simply remove the air filter, give it a thorough inspection, and clean it. If it’s beyond salvation, replace it, and watch as your John Deere springs back to life with renewed enthusiasm.

Experts recommend checking your air filter every 25 hours of use or at least once per mowing season. By keeping that breath of fresh air flowing through your John Deere’s lungs, you’ll ensure it remains ready for action whenever your lawn demands attention.

The Bottom Line

A John Deere lawn mower that won’t start can be frustrating. Yet, with a bit of patience and some detective work, you’ll likely find the problem at hand.

Before diving headfirst into an investigation of your lawn mower’s internal workings, it’s essential to exercise caution. Always consult your owner’s manual for guidance on proper troubleshooting techniques, as this will provide invaluable insight into the unique specifications of your particular model.

Equipped with this knowledge and a healthy dose of common sense, you can approach the task at hand confidently and safely. By being proactive and exploring these potential issues before seeking professional help, you might just save yourself time and money.

Enamored with the world of golf Jack pursued a degree in Golf Course Management at THE Ohio State University. This career path allowed him to work on some of the highest profile golf courses in the country! Due to the pandemic, Jack began Inside The Yard as a side hustle that quickly became his main hustle. Since starting the company, Jack has relocated to a homestead in Central Arkansas where he and his wife raise cattle and two little girls.

Reasons Why John Deere D110 Won’t Start(Fixed)

Having trouble starting your John Deere D110 lawn mower can be frustrating, especially when you’re ready to tackle your yard work.

However, there are several common issues that can prevent your mower from starting.

In this article, we will explore the possible causes of a John Deere D110 not starting and provide you with troubleshooting tips and solutions to get your mower up and running again.

John Deere D110 Won’t Start

Now, let’s explore each of these possible causes in detail and discuss how you can troubleshoot and resolve them.

Check the Fuel

One of the first things to check when your John Deere D110 won’t start is the fuel level.

Ensure that there is sufficient fuel in the tank and that the fuel valve is in the correct position.

If the fuel is stale or contaminated, it may prevent the engine from starting. In such cases, draining the old fuel and refilling the tank with fresh fuel is recommended.

Inspect the Battery

A dead or low battery can also be a reason for your John Deere D110’s starting issues. Check the battery connections for any corrosion or loose terminals.

If necessary, clean the terminals and tighten them securely. Additionally, measure the battery voltage using a multimeter.

If the voltage is below the recommended level, consider charging or replacing the battery.

Examine the Spark Plug

The spark plug plays a crucial role in igniting the fuel-air mixture in the engine cylinder.

A faulty or worn-out spark plug can lead to starting problems. Remove the spark plug and inspect its condition. If it appears dirty, fouled, or damaged, it’s advisable to replace it with a new one.

Ensure the spark plug is properly gapped according to the manufacturer’s specifications.

Check the Carburetor

A clogged carburetor can obstruct fuel flow and prevent the engine from starting. Carefully remove the carburetor and clean it using an appropriate carburetor cleaner.

Pay attention to the small passages and jets, ensuring they are free from debris. Reassemble the carburetor and reinstall it properly.

Inspect the Air Filter

A dirty or clogged air filter can restrict airflow and affect the engine’s performance.

Remove the air filter and inspect it for dirt, debris, or damage. If necessary, clean or replace the air filter to ensure proper air circulation to the engine.

Verify the Safety Switches

John Deere lawn mowers are equipped with safety switches that prevent the engine from starting under certain conditions.

Check the operation of these switches, such as the seat switch, brake switch, and blade engagement switch.

Ensure they are functioning correctly and not causing any interference with the starting process.

Examine the Ignition Switch

A faulty ignition switch can prevent the starter from receiving power, resulting in a no-start condition. Inspect the ignition switch for any signs of damage or malfunction.

If needed, replace the ignition switch with a compatible one to ensure proper electrical connection.

Check the Solenoid

The solenoid acts as a bridge between the battery and the starter motor. If the solenoid is defective, it may prevent the starter motor from engaging.

Inspect the solenoid connections and ensure they are tight and free from corrosion. Consider testing the solenoid using a multimeter or replacing it if necessary.

Inspect the Starter Motor

A failing starter motor can hinder the engine’s starting process. Check the starter motor connections for any looseness or corrosion.

If the connections are secure, but the starter motor still doesn’t function properly, it may require replacement.

Consult a professional or refer to the manufacturer’s guidelines for proper installation.

Verify the Wiring Connections

Loose or damaged wiring connections can disrupt the electrical flow and prevent the mower from starting.

Inspect the wiring harness for any visible damage, loose connections, or frayed wires. If any issues are found, repair or replace the wiring as needed.

Clean the Fuel System

If all the above steps haven’t resolved the starting issue, it’s recommended to clean the entire fuel system thoroughly.

This process involves cleaning the fuel tank, fuel lines, and fuel filter. Remove any debris or contaminants that might be obstructing the fuel flow.

Consider using a fuel system cleaner additive to ensure optimal performance.

Final Remarks

The John Deere D110 not starting can be attributed to various causes, ranging from fuel-related issues to electrical problems.

By following the troubleshooting tips mentioned in this article, you can diagnose and resolve the problem.

However, if the issue persists or you’re unsure about performing any repairs, it’s best to consult a qualified technician or contact John Deere customer support for further assistance.

How often should I clean or replace the air filter in my John Deere D110?

It’s recommended to clean or replace the air filter annually or more frequently if you operate the mower in dusty or dirty conditions.

Can a faulty solenoid cause other electrical issues in my lawn mower?

Yes, a faulty solenoid can cause various electrical problems in your lawn mower, including starting issues and intermittent electrical failures.

What should I do if my John Deere D110’s battery keeps draining quickly?

If your battery consistently drains quickly, it may indicate a charging system problem. Consider checking the alternator, voltage regulator, and battery connections for any faults.

Is it possible to clean the carburetor without removing it from the mower?

While it’s generally recommended to remove the carburetor for a thorough cleaning, you can try using a carburetor cleaner spray to clean the exterior and openings without disassembly.

Where can I find the replacement parts for my John Deere D110?

You can find genuine John Deere replacement parts at authorized dealerships, online stores, or directly from the John Deere website.

George Bill

George Bill is an avid gardener and has been mowing his lawn for over 20 years. He has used a variety of different mowers during this time.George is an expert at maintaining his mowers and over the years, he has learned many tricks and techniques for getting the best results from his mowers and is always happy to share his knowledge on this site.

Husqvarna Z254F Drive Belt Tension Spring(Explained)

Troy-Bilt TB110 Won’t Start(9 Common Problems Solutions)

Your subscription could not be saved. Please try again.

Your subscription has been successful.

Reasons John Deere Not Getting Fuel: Fix Problems Easily!

If you own a John Deere mower or tractor, you may encounter the problem of “John Deere not getting fuel.” This issue can be caused by a variety of factors, including a dirty fuel filter, a faulty fuel pump, a clogged fuel line, or water in the fuel tank. If left unaddressed, this problem can prevent your equipment from running properly and even cause long-term damage.

However, there are several solutions that you can try to fix this issue. These include treating fuel issues, unplugging and cleaning the fuel line, replacing the fuel pump or solenoid, and fixing blockages between the fuel filter and tank.

Causes of John Deere Not Getting Fuel

Dirty or Clogged Fuel Filter

A dirty or clogged fuel filter can be one of the causes of “John Deere not getting fuel“. Fuel filters are designed to trap impurities such as dirt, rust, and scale from entering the fuel pump, fuel injectors, and engine. This helps prevent damage to these components and maintains proper engine performance.

Gasoline fuel filters are rated in microns, with most modern vehicles using filters rated between 10 and 30 microns. Over time, the filter can become clogged with these impurities, which can restrict the flow of fuel to the engine and cause it to stall or run poorly.

Faulty Fuel Pump

A faulty fuel pump can be one of the causes of “John Deere not getting fuel”. If you suspect that the fuel pump is not working properly, there are a few steps you can take to diagnose the issue. One way to check for a faulty fuel pump is to use a scanner or code reader to check for diagnostic trouble codes (DTCs).

In some cases, a faulty pump may set DTCs in your equipment’s computer. The codes may either be directly related to the fuel pump or make reference to an air/fuel ratio problem. A scan tool or a simple code reader can be used to retrieve the information.

If you find that there are codes related to the fuel pump, this may indicate that there is an issue with the pump itself or with other components, such as the fuel pressure regulator or fuel injectors.

Clogged Fuel Line

A clogged fuel line can cause John Deere equipment to not get fuel, leading to starting and running problems. The fuel line is responsible for carrying fuel from the tank to the engine. Over time, the fuel line can become clogged with dirt, debris, or rust, restricting the flow of fuel to the engine. This can cause the engine to sputter or stall or prevent it from starting altogether.

Water In The Fuel Tank

Water in the fuel tank can cause John Deere equipment to not get fuel, leading to starting and running problems. Water can enter the fuel tank through condensation, a cracked tank, or a fuel pump that has failed and is leaking.

Top 5 Reasons Lawn Tractor Won’t Run After Winter Storage!

When water enters the fuel tank, it sinks to the bottom, and when the engine tries to draw fuel from the tank, it can suck in water instead of fuel. This can cause the engine to sputter, stall, or prevent it from starting altogether.

Air In Fuel Line

Air in the fuel system can cause various problems in the engine’s performance, including stalling, rough idling, and decreased power output. This is because the air in the fuel system can disrupt the proper fuel-to-air ratio needed for efficient combustion.

If you suspect that air is getting into your John Deere fuel system, it is recommended to have a professional mechanic inspect and diagnose the issue to prevent further damage to your equipment.

John Deere Fuel Pump Troubleshooting

Dirty or Clogged Fuel Filter:

Start by inspecting the fuel filter for any visible dirt or debris. If dirty, it’s recommended to replace the fuel filter.

Here are the step-by-step instructions on how to replace the clogged fuel filter in a John Deere lawn mower:

Turn off the engine and remove the key to ensure the mower is completely off.
Locate the fuel filter on the mower. It is usually located near the carburetor or fuel tank.
Use pliers to remove the clamps holding the fuel line in place.
Use a fuel line removal tool to disconnect the fuel line from the filter.
Using a wrench or socket set, remove the fuel filter from the mounting bracket.
Install the new fuel filter in the mounting bracket and tighten it with a wrench or socket set.
Reconnect the fuel line using the fuel line removal tool.
Reattach the clamps holding the fuel line in place using pliers.
Start the engine and check for any fuel leaks.

Faulty Fuel Pump:

Use a scan tool or code reader to check for diagnostic trouble codes (DTCs) in your John Deere computer. If you find any related to the fuel pump or air/fuel ratio problem, the fuel pump may be faulty and require replacement.

Here is a step-by-step guide on how to use a scan tool or code reader to check for diagnostic trouble codes (DTCs) in your John Deere computer for checking a faulty fuel pump:

Make sure your John Deere is turned off, and the scan tool or code reader is unplugged.
Locate the diagnostic link connector under the dash of your John Deere.
Plug in the scan tool or code reader into the diagnostic link connector.
Turn on the engine of your John Deere and follow the instructions in the user manual of the scan tool or code reader for the auto code reading procedure.
The scan tool or code reader will display any diagnostic trouble codes (DTCs) that are stored in the computer of your John Deere.
Look for any codes that are related to the fuel pump or refer to an air/fuel ratio problem.
Refer to the user manual or online resources to interpret the codes and identify the possible causes of the problem.
Based on the codes, diagnose the issue with the fuel pump and take necessary actions such as repairing or replacing the faulty fuel pump.

Clogged Fuel Line:

Check the fuel line for any visible blockages or damages. If clogged, try unplugging the fuel line and cleaning any dirt or debris.

To fix this, you need to follow the instructions below:

Turn off the engine and disconnect the spark plug wire for safety.
Locate the fuel line in your John Deere lawn mower. It typically runs from the fuel tank to the carburetor.
Use a pair of pliers or a clamp to pinch off the fuel line so that fuel doesn’t leak out.
Detach the fuel line from both ends – the fuel tank and the carburetor. Be careful not to damage the fuel line during removal.
Use a can of compressed air to blow out any debris that may be causing the clog. Alternatively, you can use a thin, flexible wire or a small brush to remove any dirt or debris.
Reconnect the fuel line to both the fuel tank and the carburetor, making sure it is securely attached and not leaking.
Remove the clamp or pliers from the fuel line.
Reconnect the spark plug wire and start the engine to ensure that fuel is flowing correctly.

Water In The Fuel Tank:

When gasoline sits for long periods, the ethanol and moisture in the fuel can separate, causing sticky deposits that can clog the fuel system and result in premature fuel component failures. To fix this issue, drain the fuel tank and clean it thoroughly, then refill it with fresh fuel.

Air In The Fuel System:

Air can enter the fuel system through leaks, cracks, or loose connections. Start by checking for any visible damages or leaks in the fuel system. Then, bleed the fuel system to remove any air s.

To bleed the fuel system in a John Deere lawn mower and remove any air s, follow these steps:

Turn off the engine and allow it to cool down.
Locate the fuel filter and unscrew the cap on top of it to access the fuel filter bowl.
Check the fuel filter bowl for any dirt or debris and clean it if necessary.
Fill the fuel filter bowl with diesel fuel until it is packed to the brim.
Close the fuel filter bowl and start the engine.
Let the engine run for a few minutes to allow the fuel to circulate and remove any air s in the system.
Shut off the engine and recheck the fuel filter bowl. If the fuel level has dropped, refill it with diesel fuel and repeat the process until the fuel level remains constant

This Video Might Help!

John Deere not getting fuel can be a frustrating problem for any lawn mower owner. However, by following the steps outlined above, including troubleshooting common issues such as a dirty or clogged fuel filter, faulty fuel pump, clogged fuel line, water in the fuel tank, and air in the fuel system, you can resolve the issue and get your lawn mower back to peak performance.

It is also essential to take preventative measures to avoid future problems, such as regularly changing the fuel filter and keeping the fuel tank clean.

Frequently Asked Questions (FAQs)

Why won’t my John Deere start after running out of gas?

If your John Deere ran out of gas, it might have air in the fuel system. Try priming the fuel system or using starter fluid to help start it.

How do you test a John Deere fuel pump?

To test a John Deere fuel pump, use a fuel pressure gauge to measure the pressure in the fuel system. Check the manufacturer’s specifications for the correct pressure range.

Why isn’t my John Deere lawn mower getting gas?

If your John Deere lawn mower isn’t getting gas, it could be due to a clogged fuel filter, a faulty fuel pump, or a damaged fuel line. Check these components to diagnose the issue.

How do I know if my tractor fuel pump is bad?

Signs of a bad tractor fuel pump include difficulty starting, engine stalling or sputtering, decreased power, and unusual noises. A fuel pressure test can confirm the pump’s functionality.

How do you troubleshoot a mechanical fuel pump?

To troubleshoot a mechanical fuel pump, start by checking the fuel lines and connections for any leaks or blockages. Next, test the pump’s pressure output using a fuel pressure gauge. If the pump is not providing enough pressure, it may need to be replaced.

Learn the reasons why a lawn mower won’t start after winter or during peak season, and how to fix those problems.

Family Handyman

Introduction

Most of the time when a lawn mower won’t start the cause is a problem with the gas or the lawn mower carburetor.

What to Do if Your Lawn Mower Won’t Start

Whatever kind of lawn mower you’ve got, the last thing you want once winter finally lifts and spring has sprung is a lawn mower that won’t start.

If you’ve taken the proper steps to winterize your lawn mower, you’re far less likely to be dealing with such issues. It’s also why you should tune up your lawn mower at the start of every season. However, it’s not out of the ordinary to find your gas-powered lawn mower not starting from time to time, so it’s important to know why your lawn mower isn’t starting and how to fix it.

Project step-by-step (6)

Check the Gas Tank

Let’s start with the obvious. Before you have a heart attack pulling on the rip cord, you’ll want to check the fuel. Like any gasoline-powered engine, lawn mowers run out from time to time. Maybe you forgot it was running on fumes when you finished mowing last time. It sounds simple, but we’ve all overlooked the gas tank from time to time.

Even if there is gas in the mower, if the fuel’s been in there more than a month, that could be the problem. Gas sitting around too long in the tank can get contaminated with dirt and extra moisture.

So if your gasoline has been in the mower for more than month, drain the gas properly, dispose of it correctly, and fill up the mower with new gas. It may take quite a few pulls to suck the new gas into the lawn mower carburetor, so be prepared to clean and dry the plug a few more times.

Add fuel stabilizer when you fill up the tank to help protect the gasoline in there from dirt and moisture.

Family Handyman

Check the Spark Plug

Start by making sure the lawn mower spark plug cable is connected to the plug itself. It’s quite possible that it got pulled off there over the winter while the mower was being stored in the garage.

If that’s not the issue, the next step is to remove the spark plug to see if it’s wet. There’s no way the engine will start if it is. So clean the plug with carburetor cleaner and let it dry. Cleaning it with compressed air isn’t enough; you need a solvent to remove oil residue. If it’s really grimy and dirty, it might be best to change the spark plug.

Fertnig/Getty Images

Check for Debris in the Mower Deck

Grass clippings can get clogged in the mower deck, which can prevent the blade from turning. This is a common problem if you’ve cut wet grass or let the lawn get especially long and bushy between cuttings. If the cord is hard to pull, that’s a good sign that there’s debris clogging up your mower’s deck.

This is a pretty easy problem to solve. With the mower off, flip it on its side or upside down and scrape out the gummed up grass clippings. Once that’s done, you can flip it back over and start it up again.

JJ Gouin/Getty Images

Check the Air Filter

The lawn mower’s carburetor regulates the mix of gasoline and air going into the engine where it’s burned to create power. Before air goes into the carburetor it passes through the air filter which prevents dirt and debris from getting into it.

If the air filer is clogged or dirty, it throws the ratio out of whack. Sometimes that results in your lawn mower smoking, and sometimes it prevents it from starting entirely. So take a look at the air filter to see if it’s dirty. If so, you can clean it or just change it outright.

Robert Maxwell for Family Handyman

Check the Carburetor

Another common reason for a lawn mower that won’t start is a clogged or dirty carburetor. It can also cause your mower to run rough or spew black smoke when you’re trying to cut the grass. If that’s the case, you may need to clean the carburetor.

To get to the carburetor, you’ll have to remove the air filter. Once that’s out of the way, you can remove the carburetor in order to clean it.

Once it’s out, check for corrosion. If you see chalky/powdery white corrosion like this, it’s probably better just to replace it. To clean it, take it apart and spray carburetor cleaner on the parts and inside the housing. After that, put the carburetor back together and reinstall it in the mower.

Check the Fuel Filter

Like the air filter, the fuel filter prevents dirt and debris from getting into the combustion chamber of your lawn mower’s engine, taking that stuff out before the gas gets mixed with air in the carburetor. Problems with the fuel filter might also result in the engine sputtering or rough idling, even before it gets to the point of preventing the mower from starting.

To start, tap the side of the carburetor to help the flow of gas. If that doesn’t work, you might have a clogged filter.

Not all lawn mowers have a fuel filter, but for the ones that do, it’s usually located in the fuel line or the fuel tank. To find out where the fuel filter is at, check your lawn mower’s owners manual, which will also tell you what type of filter it is.

If the filter is in the fuel tank, you’ll need to drain the gas from the mower into a drain pan, assuming you can’t run the engine until it’s out of gas. If the filter is in the fuel line, clamp off the fuel line before removing the filter. Once you have the filter off, you can check to see if it’s dirty and clogged by holding it up the light. If it is, install a new one. Make sure it works with this lawn mower maintenance checklist.

Lawn Tractor Won’t Start No Click – Fix it now!

Before we assume there’s a problem, let’s take a minute to check that we’re following the correct starting procedure. All mowers will have safety sensors fitted, and if the sensors are open, they won’t start.

So why won’t your lawn tractor start, not even a click? The most common reason for a no start, not even a click sound, is a totally flat battery, but other likely causes include:

A tractor mower won’t start if the blade lever/button is on, manual mowers need to be in Neutral gear, and some mowers won’t allow starting if the oil level is low or the hood is open.

If you are in any doubt about the correct starting procedure for a lawn tractor, check out – “How to Start Husqvarna Ride-on Mower.”

If you do hear a click sound when you turn the key, check out – “Mower Wont Start Just Clicks.”

Check Battery Connections

To test a battery, you need a voltmeter, but if you don’t have one, try this basic check. If your mower has hood lights or dash lights, go ahead and turn them on. If they light up and are bright, your battery is most likely not the problem.

Dash Lights are Dim

Check – Check the battery cables; they should be clean and tight. When connections are loose or corroded, it prevents available power from flowing to the starter.

Charge Battery – If your battery is completely flat, it will take a couple of hours and will require a battery charging hack, or check out this Smart battery charger the NOCO Genius1 on Amazon.com.

Jumpstart Mower – This is the fastest solution, but it may not be the long-term fix. (see Jump starting below)

Battery Check Hack

Turn on the lights to check for power supply
If they work – the battery is likely OK
If lights are dim – check battery cables
If cables clean and tight – charge battery
If you have no lights – check battery with a volt meter

Volt Check – Need a voltmeter for this test. Check b attery voltage – 12.65v is 100%, 12.30v is 70%, and 12.05v is 50% charged. This battery needs a charge.

Very low volts indicate the battery is likely faulty, and it may not recharge. To test a battery, it must be charged, so a battery charger may be required. However, it is possible to jump-start the mower (see below), and given time, the mower’s alternator will charge the battery, assuming it isn’t faulty.

Once the battery is sufficiently charged (about 70%), try the crank test.

Battery Crank Test – Attach the Voltmeter and crank over the engine; if the volts read less than nine, replace the battery. (The battery must be over 70% charged for running this test)

Check out the Amazon link below for quality mower batteries delivered to your door.

Voltmeter – If the lights don’t work at all, you’ll need to use a voltmeter to check the battery’s state of charge. You may have blown a fuse (see below).

If you have very low volts, the battery is likely faulty. The average life of a battery is four years, more if well cared for.

Jumper Cables

If you don’t have a charger, you can still get it running, but you’ll need a set of jumper wires, and a car or any 12-volt battery will do the job. Follow this link for a more detailed guide to Jump Starting.

Jumpers – Use good quality jumpers.

If you are unfamiliar with jump-starting, you’ll find a complete guide here, “Jump starting riding mower.”

Add the cables in sequence 1, 2, 3, and 4 to start the mower, and while idling, remove jumper cables in reverse order 4, 3, 2, and 1.

Dash Lights Don’t Work

Main Fuse – If the battery is fully charged and still no go – check the main mower fuse. Some mowers will have the blade-type fuse; others will have the old-style bottle type.

When the fuse blows, all power is lost; changing it is simple. It is important to replace the fuse with the correct amp rating. If the fuse keeps blowing, the rating is too low, or there’s a short-to-ground wiring fault.

Fuse Location – Places they like to hide include under-seat, under the hood, behind the fuel tank, and control module incorporated. Modules are usually under the dash panel.

Replacing the fuse is simple, just pull out the old one and push the new one into place. It’s important to replace it with the correct amp rating. Otherwise, you can damage the wiring circuit and components.

Check Safety Sensors

Riding mowers are designed with safety features built in to protect us from operator error or accident. Safety features on mowers are controlled by sensors/switches, and most modern mowers will wire those sensors into a control module.

The sensors are a very simple on/off switch type and rarely give trouble; it’s more common for the striking plate that pushes on the sensor to be misaligned; when this happens, the sensor is open, and the engine won’t start or stops depending on where the sensors fitted.

Over-riding – Sensors can be overridden for test purposes, remove and join the wires, and some sensors are wired in reverse – meaning, just disconnecting them will override the sensor. You can check sensors for continuity using a voltmeter.

Starting Procedure

As you know, there’s a starting procedure that must be followed before your mower will start. You can check out the starting procedure here – “How to Start a Husqvarna Ride-on Mower.”

There are several sensors that must be engaged; the location and number of sensors are dependent on the make of the mower and differs between manual and hydro-static (type of transmission).

The main sensors are the brake pedal; seat; gear lever; blade engage control switch or lever, and some models, such as John Deere, will have one fitted to the hood (Hood open – no start).

Safety – For our safety, sensors are fitted to the seat, blade engages lever or button, transmission selector, brake pedal, and on some models, the hood. Any of these sensors will prevent your mower from starting.

On older manual transmission mowers, the gear selector wears, and although the selector points to the Neutral position, it’s often still in gear – confirm it’s in Neutral by pushing it forward or back; it should be easy to push.

Sensors – This older style Craftsman / Jonsered / Husqvarna blade lever causes lots of no-start problems.

The lever spring gets weak and leaves the sensor in the open position which prevents starting.

John Deere Won’t Start / No Noise When U Hit Key

Sensors – The quick fix, hold down the lever to start the mower. The complete assembly is available and not too difficult to fit. Check that all sensors are working, and look to see if the striker plates are closing the sensors fully.

Check wiring to sensors for chafing and that the connectors are secure and corrosion-free.

Check Control Module

Most modern mowers will have a Control module; they are a printed circuit with relays and resistors – they do give trouble. Because the specs vary, I can’t be more detailed.

The function of the control module is to receive a start/stop command from the ignition switch and only output a start command to the starter (via the solenoid) if all the correct sensors have been engaged.

Replacement modules can be on the spendy side, so it may be time to access your old mower; if she needs a ton of love in the blades bearing and belts department, it may be time to look at a new set of wheels.

Module – Wires come loose, have a helper attempt to start the engine while you wiggle the wiring connectors.

Check also for damage, water, or scorch marks on the panel itself.

Check Ignition Switch

Ignition switches are an important part of the ignition system; bad connections here can cause lots of problems. Ignition switches – send commands to the control module if fitted.

If your mower doesn’t have a control module, then the safety sensors are wired inline to the ignition switch – meaning any sensor that is in the open position will leave the ignition switch with an open circuit (No start). These systems are basic and tend to be the most reliable.

Common Problems

Issues with ignition switches: loose wiring at the switch; corroded terminals; broken terminals; spinning ignition switches.

Wiring specs for ignition systems vary, so I can’t be more detailed. Check the ignition wiring for damage, corrosion, or loose wires. Have a helper sit on the mower and attempt a start while you wiggle the ignition wires and connectors.

Check ignition inputs – ground and 12-volt supply.
Check ignition outputs – 12v to the starter solenoid (or to the control module, if fitted) when the ignition is in the start position.

Switch – Spinning ignition switches cause damage to the wiring and pins.

Corrosion is another common failure. This usually causes unreliable starting and shutdowns.

Wiggle – Try wiggling the wires at the back of the ignition switch while attempting to start the engine; you may need a helper. Often wires simply come loose but do check them for corrosion.