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Lawn Mower

Experienced gardeners share their insights in answering this question :
It sounds like bearings are seized and need to be replaced. Too much attempted use will burn out the field windings and a rewind or new motor will be needed – both costly.

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

Your lawn mower`s carburetor regulates the ratio of gasoline to air mixture. If the carburetor isn`t getting enough air, the mixture has a higher percentage of gasoline, which can create black exhaust smoke. It`s possible that a dirty or clogged air filter is preventing sufficient airflow into the carburetor.
Worn or broken blade drive belt – If the riding mower blades are not spinning, the blade drive belt may be worn or broken and unable to engage the blades. If the belt is intact, inspect it to see if it`s loose or slipping on the pulleys then replace it with a new one if necessary.
Blue or white smoke coming from your engine usually indicates burning oil, which can be caused by: Overfilling the crankcase with oil. Incorrect oil grades. Operating engine at greater than a 15 degree angle.
A burning rubber smell

If your car smells like burning rubber, turn off the engine and check under the hood to see if anything looks out of place. Chances are that the smell results from a belt or other part slipping and rubbing against the hot engine. If you can`t identify the problem, take your car to a mechanic.

If your engine smells of burning or smoke, there are two possible reasons for this: it`s overheating or there`s a problem with the oil. Generally if it`s overheating, you`ll know about it because a warning light should appear on the dashboard.
If your mower blades are not cutting properly, the blades may be dull. If the blades are dull, remove them and have them sharpened. Sharper blades increase the efficiency of the mower, and give a more even and clean-cut look to your lawn.
To fix blue or gray smoke: The easy way is to add a bottle of Motor Honey Oil Treatment to your motor oil with each oil change. It`s specially designed to reduce oil burning and stop smoky exhausts. The hard way is an engine overhaul, which is about a hundred times more expensive and a thousand times more work.
If it`s clogged, the combustion chamber may not be getting enough oxygen, resulting in a too-rich fuel mixture that will cause the engine to run poorly and even spew smoke. The solution is to change the air filter, a relatively easy task. Blue and white smoke is the result of oil on the engine.
White Smoke

It usually means that coolant is being burned in the engine, which means that something is drastically wrong. The most common cause of this is a blown head gasket, which can quickly lead to an overheating engine.

Hello, You likely have a small oil leak on the valve cover, or another place that is leaking on the exhaust. Also, if the smell is sweet, like antifeeze, you may have a small coolant leak as well. Lastly, check smell the wheels to see if the brakes are the source of the smell.
Low coolant level in your reservoir. A strong, acrid smell when your engine is hot – some describe this as a “sweet” smell coming in through the car vents. White smoke coming from your exhaust.
Generally speaking, burnt oil will have a thick, acrid odor. Its unpleasantness will stand out during your drive, and more often than not, you won`t be able to overlook its presence. When this happens, you should safely pull over to examine your engine and check for the cause of the foul smell.
A pretty common issue that occurs with engines that are running low on oil is a strong burning oil smell. If you`re driving and you start to smell an oily odor coming from somewhere, that`s usually a pretty good sign your vehicle is due for an oil change.
White smoke usually means coolant is getting into the combustion chambers of your vehicle. This generally happens because of a cracked or leaking head gasket, which allows coolant to seep into your cylinders. In extreme cases, you will need to replace your head gasket.
The engine powers both the wheels and the blade, just like a walk-behind self-propelled mower. But instead of being directly connected to it by an axle, the blade on most riding mowers is powered by a belt connected to the engine.
An improperly routed belt can cause the engine to die when the blades are engaged. To check belt routing, lower the deck to its lowest setting and remove the belt guard by the drive pulley. Next, lift the belt over the pulley and remove the pins that support the deck at the rear.
You can usually recognise crankshaft damage by the typical noise it makes. If you hear a clacking sound that matches the engine speed, this commonly indicates a defect in the connecting rod bearings. If you can hear a rumbling or grumbling coming from deep within your engine, the crankshaft bearings have been affected.
You may hear a knocking noise from the engine, or notice that the engine`s oil pressure is low (from a gauge or warning light). In severe cases, the engine will simply stop running. If you notice any of these signs, pull your car over immediately, and shut off the engine. Do not try to drive it any farther.
Parts of a Reel Mower

Manual or push reel mowers don`t have engines, so they don`t use gas and emit no pollutants. The lack of an engine also means reel mowers are virtually noiseless.

Cutting wet grass can dull the blade more quickly. Clean blades thoroughly before and after mowing a lawn when wet to keep the cut as sharp as possible. Stop and turn off the mower to check your blades as you go along, to clear any clogs that may form on the underside or at the side discharge.
Black exhaust smoke

When your exhaust pipe gives off black smoke, one of the things to get worried about are bad or worn out spark plugs. It means fuel burning in the combustion chamber is not being done 100 percent or burnt fully. It also means that air is not being well mixed with fuel to burn effectively.

If the vehicle is overheating, any use could quickly ruin the engine. If the smoke is from engine oil dripping onto a hot exhaust manifold, you could end up with an engine fire.
Lawnmowers can cause fires when the conditions are hot and the grass is dry. Dry grass getting packed in the mower deck can result in a lawn mower catching fire. Fires can also happen from lawn mowers striking rocks and igniting a spark that can set dry grass on fire and burn up a large area.
A faulty or dirty spark plug could be the reason your lawn mower won`t stay running. It might produce the initial spark, but the spark won`t be enough to keep the engine running if the plug is clogged with dirt and oil. Spark plugs are usually located on the front of a push lawn mower and connected to a black cable.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

My mowers blades are not turning but the hum of the motor is there and it has a burning smell with smoke coming out of the motor housing unit …help
ANSWER : It sounds like bearings are seized and need to be replaced. Too much attempted use will burn out the field windings and a rewind or new motor will be needed – both costly.

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Exmark 44 Mower bogs down going forward
ANSWER : When you say ‘going forwaed’, is that while mowing or does it do it without the blades engaged or ‘not mowing’?

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Engine runs, blades turn but mower will not move
ANSWER : Look in front of back tired on frame, not deck, there are. 2 rods, 1 on each side, rods look like a L, it’s going through a little eye opening, push it backards, mower should move. If rod is pulled through opening and locked in, mower will not move..its a safety. Feather on mower

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Lawn scarifier motor runs slow than starts to smoke
ANSWER : What sort of scarifier is it?

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Toro cutting off
ANSWER : Maybe low oil level, all mowers have a low oil cutoff. 30w oil.

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<!– from fixya rte –>How do I engage bagger on zero clearance – kawasaki 48'' Toro Com Zero Turn Lawn Mower 21hp Kawasaki ()
ANSWER : That should be covered in your manual. I’m not sure what a zero clearance mower is actually, are you assuming and making up a name for it?

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I need to get the blade of the lawn mower sharpened.Any tips on how to disconnect the blade fropm the lawn mower?
ANSWER : There is a jig that you can buy that makes this job SO much eaiser. It is a universal jig that clamps onto the deck and keeps the blade from spinning so you can use a ratchet to remove the nut holding the blade on. One name brand is called a “Blade Hog”. You should be able to find one of these at one of the bog box hardware stores.

Hope this helps,
Chad

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Diagnosing possible pto issue – Toro Zero Turn Rider 74366 Lawn Mower Tractor Rider Ztr
ANSWER : Check plug on the pto itself.located under the mower near the rear end. contacts probably have dried dirt and mud. if that don’t work, tap it with a hammer,it may be just stuck.Thats what I did and it been working ever since. Hope this helps someone.Let me know.

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