Mtd lawn mower maintenance. Here’s What To Do If Your Lawn Mower Won’t Start

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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.

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Description

Introducing a procedure to maintenance the Fuel Tank Assembly in a MTD Yard Machine Lawn Tractor Model 84A (840-series #14AS84AH062) equipped with an 18.5hp Briggs and Stratton air-cooled engine. The following article describes those steps necessary for the disassembly, removal, servicing, and re-installation of the components.

Disassembly procedures

Read some of the directions in Maintenance a MTD Yard Machine Lawn Tractor and perform SECTION G

STEPS #01. #15 contained therein. Only when fully completed proceed with those steps shown below.

Step 1: Remove the fuel line hose clamp with a 3/8 wrench or ratchet/socket

Remove the 1/4 x 1/2 hex screw holding both the Fuel Line Clamp (Retainer) and one side of the Fuel Tank Strap. Once the screw has been removed, remove the Fuel Line Hose Clamp by simply slipping the expandable clamp off of the Fuel Line.

Step 2: Disconnect the fuel line intake clamp

Gently squeeze the opposing tabs on the yellow Fuel Line Intake Clamp with a pair of regular pliers and slide it a couple of inches down the Fuel Line just far enough for it not to be a hindrance to removing the Fuel Line.

Step 3: Remove fuel intake

The fuel intake assembly is press-fitted into the Fuel Tank making use of a rubber-seal fitting. The assembly is removed by simply grasping the metal elbow fitting on the Intake and gently pulling outwards.

WARNING! Once the Intake has been removed, dangerous fuel vapors will begin escaping from the Fuel Tank. Use a clean, dry rag to plug the hole until the Intake has been disconnected from the Fuel Line and subsequently reinserted back into the tank.

Step 4: Disconnect the fuel intake from the intake assembly.

Use a gentle twist-pull action while slowly working the rubber hose off of the barbed metal elbow-fitting.

CAUTION! When removing the Fuel Line be aware that fuel may still be present in the hose. Use caution when disconnecting the Fuel Line from the elbow-fitting!

IMPORTANT: Once the intake has been disconnected from the Fuel Line, re-insert the assembly back into the tank by pressing the rubber-fitting into the hole.

Step 5: Remove the fuel tank

The fuel tank is freely mounted in a saddle situated between the two chassis rails, thus allows the tank to be simply lifted out. Once removed, carefully empty any remaining contents of the tank into a suitable container to be properly disposed of.

Step 6: Service the fuel tank

The MTD fuel tank on this yard tractor is a single-piece plastic composite tank designed to withstand the punishments of outdoor yard maintenance. When servicing the tank itself remember the following:

Clean the tank with mild detergents, or those solutions designed specifically for removing contaminants from such tanks.

During the cleaning process, do not install the tank gauge nor the fuel intake assembly. These must be serviced separately.

After completion of the cleaning process, thoroughly rinse out the tank so as to remove all detergents, preventing fuel contamination.

After completion of the rinsing process, allow the tank to fully dry before re-installation.

Allow only minimal time once the tank has dried and inspections have been completed to reinstall the Fuel Gauge and Fuel Intake in order to prevent contaminants from entering the fuel system.

Prior to beginning re-installation, thoroughly inspect the tank especially the manufacturing seams and the base of the nozzle neck for signs of splitting or cracks. If any are found, the tank MUST BE replaced!

Carefully inspect the fuel gauge to insure that there are no cracks in the needle-dome or the the threaded neck which goes down over the tank nozzle.

Carefully inspect the gasket on the underside of the gauge to insure that there are no cracks or dry-rotting. If found, the gasket or the entire gauge must be replaced.

Carefully inspect the fuel intake assembly to insure there is no splitting, cracking, or dry-rotting of the rubber seal that seats down into the fuel tank. If found, the intake will require replacement.

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With so many choices available, Lowe’s is here with lawnmower guidance to help you achieve an enviable lawn in the shortest time with the least amount of effort. Whether you’re looking for the best riding lawn mower, best electric lawn mower or best self-propelled lawnmower — or you’ve got a specific brand in mind, like a CRAFTSMAN Lawn Mower, John Deere Lawn Mower or Husqvarna Lawn Mower — we’ve got the right option for your yard.

Electric vs. GasElectric lawn mowers are top of mind for many customers. They’re quieter, require less routine maintenance (they don’t use oil) and come without the frustration of running out of gas.

Yes, your lawn mower battery will deplete, but that’s a quick charge in the garage instead of a trip to the gas station. And, because you can purchase additional batteries and chargers to have on hand, sometimes a quick swap of the battery will do the trick. To find the best electric lawn mower for your home, consider battery life and whether the machine offers the features you need, like bagging and mulching.

Push vs. Self-PropelledIf you prefer a gas lawn mower, your next decision is to push or not to push. A self-propelled lawn mower takes some of the work out of mowing the lawn as it pulls itself forward rather than relying on human power.

Alternately, a push lawn mower — like the Yard Machines Lawn Mower — may replace a trip to the gym. For smaller, flat lawns, push mowers are a more economical choice. But the best self-propelled lawn mowers can be more fun.

Zero-Turn MowersZero-turn mowers (ZTRs) are known for their ability to navigate a variety of obstacles like flower beds and trees. Their front caster wheels pivot at sharper angles than lawn tractors and have a higher forward speed for open areas.

Riding vs. RoboticWhen it comes to effort, both the riding lawn mower and the robotic lawn mower keep you free from exertion. The difference, however, is that a robot lawn mower requires significantly less interaction and hands-on time than even the best riding lawn mower.

Working on a schedule throughout the week, a robot trims the grass inside a set perimeter with whisper-quiet operation. When the machine’s battery runs low, it returns itself to the docking station for charging and gets back to work again when it reaches full power.

Lawn Mower PartsRegardless of the mower you choose, a little maintenance is required for proper working order. And Lowe’s is here with the lawn mower parts you need to get the job done.

If you do go with a riding mower, you may want to consider a lawn mower lift. Mower lifts are made specifically for the task of safely working on your mower.

The best riding mowers: Mow your lawn faster

Up your summer lawn care game with a riding mower that makes for a faster, more eco-friendly mowing experience.

Taylor Clemons is a tech writer and reviewer based near Cleveland, OH. After graduating from Tiffin University in 2011, they spent several years in lawn and garden manufacturing before working on their own (now defunct) game review site, Steam Shovel.

Taylor Clemons is a tech writer and reviewer based near Cleveland, OH. After graduating from Tiffin University in 2011, they spent several years in lawn and garden manufacturing before working on their own (now defunct) game review site, Steam Shovel.

Riding mowers are a popular mower choice for homeowners, especially if you have a big property to maintain every summer. They have cutting decks measuring from 42 to 72 inches, so you can make short work of everything from typical lawns to large properties, like sports complexes and golf courses.

Unlike their push mower counterparts, riding mowers have more features to consider in order to find the right fit for your yard. You can choose either a manual or hydrostatic transmission, so you can set and forget your speed or operate your mower like a car. You can even get riding mowers with cruise control or all-wheel drive for better traction.

While gas engines are far more common among riding mowers, there is a wide selection of battery-powered models if you’re looking for a more eco-friendly solution for lawn care. My pick for the best overall riding mower is the Troy-Bilt Super Bronco XP for its 24HP engine, 54-inch cutting deck, and ability to mow up to four acres with a full gas tank. You can keep reading below to find out more about the Troy-Bilt Super Bronco XP as well as our other top picks.

Troy-Bilt Super Bronco XP

Best riding mower overall

• 24HP engine
• 54-inch cutting deck
• Automatic transmission
• Attachments and accessories available

Troy-Bilt Super Bronco XP tech specs: Engine: 24HP Kohler | Cutting width: 54 inches | Transmission: Hydrostatic/Automatic | Max yard size: 4 acres

The Troy-Bilt Super Bronco XP riding mower is an excellent choice for a variety of lawns. It’s built with a 24HP Kohler engine and a 54-inch cutting deck to let you handle inclines and rough terrain or haul tools, mulch, and potting soil around your property.

The hydrostatic, automatic transmission makes operation similar to a typical car, so you can spend more time actually cutting your grass and less time learning how to drive your mower. With a 3-gallon tank, you’ll be able to mow up to 4 acres at a time.

Ryobi 80V electric riding lawn tractor

Best electric riding mower

• 2.5 acre max range
• Quick-charge batteries
• LCD heads-up display
• USB charging ports

Ryobi 80V electric lawn tractor tech specs: Engine: 80V brushless electric | Cutting width: 46 inches | Transmission: Hydrostatic/Automatic | Max yard size: 2.5 acres

Electric riding mowers have become more popular in recent years as homeowners and landscaping professionals look for ways to make lawn care more eco-friendly. The Ryobi 80V electric lawn tractor features a 46-inch cutting deck and enough power to let you mow up to 2.5 acres on a single charge, and you can recharge your mower batteries in as little as 2.5 hours.

This means you can take care of other tasks, like weeding or landscaping, while you’re waiting for your mower to recharge. An LCD screen gives you a heads-up display of run time, battery levels, and reminders to inspect and sharpen your mower blades. It even has two USB ports for charging your phone while you mow.

Toro Titan Max

Best zero-turn riding mower

• Mows up to 7 acres at once
• Highly maneuverable
• 10-gauge steel construction
• Tool-free air filters

Toro Titan Max tech specs: Engine: 26HP Kohler 7000 | Cutting width: 60 inches | Transmission: Dual hydrostatic/automatic | Max yard size: 7 acres

Zero-turn riding mowers are popular with homeowners who have larger properties or lots of obstacles like trees or specialized landscaping. The Toro Titan Max’s exceptional maneuverability and larger cutting decks make quick work of yards up to 7 acres in size, while the 26HP Kohler 7000 engine uses a dual hydrostatic drive for smooth, intuitive operation.

Toro also made regular maintenance a bit more streamlined with tool-free air filters. The deck and mower body are made from tough, 10-gauge steel to stand up to dings, rocks, run-ins, and anything else your lawn can throw at it.

Cub Cadet CC30E

Best compact riding mower

• Battery-powered
• Great for yards up to 1 acre
• Compact design great for small storage areas and narrow spaces
• Push-button cruise control

Cub Cadet CC30E tech specs: Engine: 56V electric | Cutting width: 30 inches | Transmission: Hydrostatic/Automatic | Max yard size: 1 acre

Compact riding mowers like the Cub Caded CC30E are great for suburban lawns on the smaller side. The CC30E features a smaller design that is perfect for storing in multi-use sheds and garages or maneuvering through gates and narrow spaces. The 30-inch cutting deck and 56V battery let you mow up to 1 acre (or one hour) at once.

It uses a hydrostatic drive for smooth, intuitive driving while the 18-inch turning radius lets you easily mow around trees and other obstacles. It even features a push-button cruise control, so you can set-and-forget your forward speed and concentrate on mowing around obstacles, as well as staying aware of your surroundings.

DeWALT Z160 Commercial

Best riding mower for large properties

• Mow up to 10 acres
• 5.5 gallon gas tank
• Dual hydrostatic drive
• Great for hills and inclines

DeWALT Z160 Commercial tech specs: Engine: 24HP Kawasaki V-Twin | Cutting width: 60 inches | Transmission: Dual hydrostatic/automatic | Max yard size: 10 acres

The DeWALT Z160 Commercial zero-turn riding mower is designed from the ground up to handle large properties. The 60-inch cutting deck and 24HP Kawasaki V-Twin engine let you mow up to 10 acres at once, making it an almost perfect choice for rural properties or landscaping professionals. The dual hydrostatic drive makes operation smoother, though the twin-stick steering does take some getting used to.

With 22-inch rear wheels, you can easily take on inclines and rolling hills that may be on your property. A 5.5-gallon fuel tank means you’ll spend more time actually mowing and less time refueling. And if you opt for the bagger attachment, you’ll be able to gather up to 11 bushels of clippings before you need to empty.

What is the best riding mower?

I chose the Troy-Bilt Super Bronco XP as the best riding mower you can buy. It features a 54-inch cutting deck and 3-gallon fuel tank, letting you mow up to 4 acres in a single go. The 24 horsepower engine also lets you take on steeper inclines and rough terrain or haul tools and gardening supplies around your property. The hydrostatic drive makes operation similar to a typical car, while an LED display gives you accurate usage hours for streamlined maintenance.

Best riding mower

Cutting width

Transmission type

Ryobi 80V electric riding lawn tractor

Which is the right riding mower for you?

Other than your budget, there are a lot of features and scenarios you have to consider while shopping for a new riding mower. The size of your yard will determine how wide the cutting deck should be, though either a 42 or 46-inch version will be more than enough for most yards.

You can choose either a manual or hydrostatic transmission. A manual model lets you set and forget your speed so you can FOCUS, while hydrostatic models operate more like cars, going faster the harder you press the pedal. This makes them more intuitive to operate but also more expensive.

Zero-turn mowers are designed for mowing in oddly-shaped areas or around lots of obstacles like trees, lamp posts, and lawn ornaments. They’re called zero-turn because they have a zero-inch turn radius; you pivot around either rear wheel for ultra-tight turning.

Buy this best riding mower.

If you need.

A well-rounded riding mower. The 54-inch cutting deck and 24HP engine let you mow up to 4 acres at a time.

Ryobi 80V electric riding lawn tractor

An all-electric riding mower. The electric engine requires less maintenance than gas models, making your lawn-care routine more eco-friendly.

An excellent zero-turn riding mower. Precision maneuvering lets you mow around trees, landscaping, and other obstacles with ease.

A compact riding mower. The 30-inch deck and smaller build make this riding mower perfect for smaller suburban lawns.

A riding mower that can handle larger properties. This commercial-grade, zero-turn riding mower lets you cut up to 10 acres at once.

How did we choose these riding mowers?

I used to work for MTD Products (now owned by BlackDecker), which assembles a variety of lawn mowers, snow blowers, and other powered lawn equipment. Using the expertise and knowledge I gained during my time there, I looked for riding mowers with these qualities:

• Motor size: You’ll want a riding mower with at least a 10HP engine to give you enough power to handle minor inclines and lawns up to half an acre. Larger riding mowers like the John Deere Z530M have more powerful engines, often topping out over 20HP to let you tackle rough terrain and even haul equipment.
• Cutting width: Many riding mowers have either a 42 or 46-inch cutting deck, which is great for lawns between.5 and 1.5 acres. However, if you have a large, multi-acre property, you’ll want to choose a larger cutting deck. Many brands have options between 50 and 72-inch cutting decks.
• Transmission type: The less expensive riding mowers will have either a 6 or 7-speed manual transmission. This means you will use a dedicated lever to set your engine’s forward and reverse speeds, with a single brake pedal for stop control. The more expensive models feature a hydrostatic drive, which operates in a similar way to an automatic transmission in a typical car or truck.
• Accessories: Lawn care goes beyond regular mowing. I chose riding mowers that have the ability to hitch small trailers or wagons for hauling tools, mulch, or potting soil. I also chose mowers from brands that make after-market add-ons, like rear bagging units for collecting grass clippings, mulching kits for re-feeding lawns, and snow plows for year-round use.

How do you decide which riding mower to buy?

Assuming you have a budget in mind, the first thing you need to do is find out how big your lawn is. You can either find your lot size on your memorandum deeds if you’ve bought your house, or you can check your city’s website to see if you can request lot measurements if you’re renting. If your lot measures about an acre, you’ll be able to use a 30 or 42-inch cutting deck without any issues. For lawns up to two acres, a 42 or 46-inch deck is ideal. And if your lot is over two acres, you can get a mower with up to a 72-inch cutting deck to handle larger areas.

The transmission type is also important. Many newer models have what is known as a hydrostatic drive. This means that they operate similarly to how a car drives: You push the pedal and it moves forward or backward. And the harder you push, the faster you go. This makes it easier to learn how to drive, but that also makes the mower more expensive. stripped-back models have variable speed manual transmissions, which allow you to set and forget your speed so you can FOCUS on paying attention to obstacles and people who may be nearby.

And finally, you’ll want to consider the power source for your new riding mower. Gasoline engines are far more common, but there is now a wider variety of battery-powered models to choose from. The perks of a gas engine are that you’ll get near-infinite run times (as long as you have enough fuel to keep the engine going) and a bit more power for handling steep inclines and rough terrain. The downsides are dealing with exhaust emissions and maintenance that can be a time and money sink. Electric models don’t need engine maintenance, so you save a bit of money in the long run. But they usually have a maximum run time of about an hour, which means that you may have to plan your mowing over several days if you have a larger yard.

How big of a yard do I need for a riding mower?

Riding mowers are best suited for yards measuring one acre or larger. A model with a 42-inch cutting deck is great for mowing up to two acres, so if you have more land than that, you’ll want to spring for a 46, 54, 60, or 72-inch cutting deck.

If you’re right on the threshold, you can get what’s known as a mini rider. They usually have compact bodies for easier storage and 30-inch cutting decks to make short work of lawns that are just a touch too large for a push mower.

How long should a riding mower last?

No matter if you choose a gas or battery-powered riding mower, proper maintenance is key to extending the life of your mower. For gas engines, you should change the oil and filters, clean the spark plugs, and sharpen the blades before you mow for the first time in the spring. And you should use fuel treatments like STA-BIL to prevent gas in the tank or extra jerry cans from going bad from moisture contamination. This prevents buildup of gunk that can ruin your engine, improves engine performance, and gives you a cleaner cut for a healthier lawn.

Electric mowers don’t need engine maintenance, but you should perform thorough inspections at the start of mowing season to check for battery damage, corrosion on battery contacts, damage to the battery housing, and also to sharpen the blades. If you do regular maintenance, not only will you save money by avoiding big repairs from worn-out parts, but you can also expect your riding mower to last 10 years or more.- which is great news, since they can be an expensive investment.

What is the cheapest riding mower?

Unfortunately, riding mowers aren’t ever really what we consider budget-friendly. However, there are models like the Murray MT100 that retail for less than 2000 without sacrificing power or cutting width.

Are there alternative riding mowers worth considering?

Whether you’re shopping at a big-name DIY store like Lowe’s, a local hardware store, or an authorized brand dealer, there are tons of options for a new riding mower. You can choose either gas or battery-powered models, cutting deck widths from as small as 30 inches to as wide as six feet.

Here‘s a short list of other riding mowers I thought were great choices:

John Deere Z530M

The John Deere Z530M features a 60-inch cutting deck for making quick work of large properties. Exceptional maneuverability lets you mow around trees, lawn decor, and other obstacles with ease.

Husqvarna YTH1942

The Husqvarna YTH1942 features an updated, 19 horsepower engine and 42-inch cutting deck to take on inclines and haul dirt, mulch, and gardening equipment.

Murray MT100

For under 2000, you’ll get a 13.5 horsepower engine, a 42-inch cutting deck, and a 6-speed manual transmission with the Murray MT100.