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How to Identify and Fix Common Gardening Problems ?

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If the plug is clean or you`ve replaced it and the mower still won`t start, the issue could be a lack of fuel. Either the carburetor is dirty and not able to mist the fuel to be mixed with incoming air, or no gas is getting to it to begin with.
Disconnected, dirty or fouled spark plugs are common causes for engines that won`t start. For small engines, spark plugs typically need to be replaced every season or after 25 hours of use. You should also check to make sure the spark plug gap is set correctly.
Turn the mower off and make sure the engine is cool. Disconnect the spark plug ignition wire and remove the key if equipped. This helps to ensure the machine doesn`t start accidentally and cause you or those around you harm.
If you haven`t turned on your engine recently, your mower won`t start and/or you have to tug repeatedly on the rewind to start the engine, a damaged spark plug may be the culprit. These problems may also cause excessive fuel consumption, deposits on the cylinder head and oil dilution.
There are a number of possible causes for a lifeless mower, but ultimately only two things are required for an engine to start: fuel and a spark. If the engine isn`t getting a spark at the plug or fuel isn`t reaching the engine, your lawn mower is never going to start.
Engine Misfiring

Failing spark plugs can cause the car engine to misfire and thus affect its performance. A single spark plug that fails to ignite the fuel-air mixture can cause a halt in the running of the engine. It can result in incomplete combustion and damage to the catalytic converter of the car.

What is even more imperative than matching cable length is that you do not mix up the order of the spark plug wires. Improper installation of these wires can result in poor combustion or misfiring of the cylinder, which will cause drivability issues and potentially severe damage to the engine.
Electric start (also known as key start or push button start) is a lawnmower feature found on petrol lawnmowers, which allows you to start the engine at the push of a button or the turn of a key instead of pulling a recoil starter rope.
When you pull a wire and there`s little or no change in idle speed or quality, you`ve found the bad cylinder. It makes no difference whether you remove each plug wire from the spark plug or the distributor (or coil pack on distributorless ignition systems).
Most carmakers recommend replacing spark plugs and wires every 30,000 to 50,000 miles. However, some factors – including engine type, driving habits, and weather conditions – can affect how often your spark plugs and wires need to be replaced.
But, you should NOT. Because if you are running your car with a missing spark plug, you are putting the engine at risk of serious mechanical faults. The engine may misfire, backfire, or develop some serious problems… that may cost you thousands of dollars in repair.
There is no danger of that in a compression ignition engine because there is no fuel present during the compression stroke. So – it will work assuming the compression ratio is sufficiently high.
Bad Spark Plugs

If the engine holds compression well, and the fuel system is working correctly, but it still won`t start, that tells us that your car`s spark plugs may not be working. The spark plugs ignite the air/fuel mixture inside the engine`s cylinders. It`s the resulting explosion that actually powers your car.

Loose, Dirty or Disconnected Spark Plug in Your Lawn Mower: Check it out, clean off debris, re-connect and tighten. Dirty Air Filter: Clean or replace. Fuel Not Reaching the Engine: Tap the side of the carburetor to help the flow of gas. If this doesn`t work, you might need a new fuel filter.
Common causes include a dirty air filter, spark plug, and carburetor. To fix these issues, replace the fuel filter, clean the carburetor and spark plug, and replace the fuel if it is old as illustrated below.
Common causes include a dirty air filter, spark plug, and carburetor. To fix these issues, replace the fuel filter, clean the carburetor and spark plug, and replace the fuel if it is old as illustrated below.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Lawn mower cranck but wont start…
ANSWER : Since you already checked for spark and air I would drain all the fuel out of it and check that fuel for water. Over time some lawn mowers end up with contaminated fuel. You can see the water sitting on the bottom of the fuel if you let it stand for a bit in a small plastic bowl.

Be sure to empty and dry out you fuel can as well. Especially if the mower stopped running right after a refuel. Which is a good sign your gas can is contaminated too.

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Will not start turns over has spark the engine was running and killed and will not restart
ANSWER : If you have good fuel to the plug and a good spark and it still does not start it could be a timing issue, check the flywheel key has not sheared.

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550 Had difficulty starting. Once started it ran very sluggish and then stopped. Checked plug, wired brushed it, cleaned filter, still nothing.
ANSWER : TRY MY SELF PROCLAIMED TRICK: THE ON THE MOWER CARB REBUILD.1. GAIN ACCESS TO CARB THROAT2.FILL ENTIRE FLOAT BOWL WITH SPRAY CARG CLEANER3.LET SIT4. DO THIS A FEW TIMES….MAKE SURE PLUGS ARE “NEW”…OR ABSOLOLUTELY CLEAN…DRIP A FEW DROPS OFF GAS INTO SPARK PLUG HOLE…RETHREAD PLUG…FIRE IT UP UNTIL IT RUNS AND PULL THRU AND BLOWS OUT ALL IN CARB

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I have had a poulan pro 550 series push mower for almost 1 year at the end of the season last year the mower would start briefly and then stop. i have cleaned out the air filter and that did not help.the mower started, i made one revolution around the yard 3/4th of the way the mower quit. I then primed the mower it started then quit and now it will not start at all. Does anyone have any suggestions of what to do. Thanks
ANSWER : There is a little spring that works the carburetor arm. If that popped off then the mower will not run.

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My parents have a self propelled…front drive…walk behind 22in cut mower purchased at Home Depot 3 seasons ago…..I do the maintance on the mower….sharpen blade….change the oic/plug & airfilter….& after having only the 4th Toro in 58 years…I have to admit I have had several problems with this one. My Dad has the origional Toro in the shed….wrap the cord around the head of the engine….give it a yank & it still starts….a tank….anyway…my problem is as follows…

The mower starts on the 1st pull….I can mow for 15 min & it dies….wait 30 min…start….mow 5 min…dies & then just won’t start at all until the next day. HELP!!! My mother is 77 & she mows a large yard & the self propelled is easy on her!

ANSWER : Does the mower die right away (cuts out) or does it sputter to a halt. Sputtering out would indicate a fuel problem. If it just cuts out when hot, then more likely an ignition problem. Your coil may need replacing. Take a close look at the coil wire (spark plug wire) and its routing. Make sure it’s not touching part of the engine where it’s heating up and has caused a “leak” to ground it out when it gets hot. If all is well then check your spark when the engine is hot and cuts out. Make sure you have a very good blue spark and not a weak one (check it cold first and then compare!). Again, indicating a possible ignition coil problem. Hope this helps and best of luck to you. James

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Where is oil drain plug on MTD mower – Mtd LAWN MOWER PART # 683-04163B FRAME Assembly:RIDER
ANSWER : If it isn’t on the bottom of the engine (above the blade) then you don’t have one. This is not that uncommon. When you need to drain the oil, FIRST- pull the spark plug wire off!!! Then remove the dip stick or filler plug and turn the unit upside down and drain the oil.

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Where is the plug on the mower – Black & Decker 19" Electric Lawnhog Mulching Mower with Rear Bag
ANSWER : Drain plug? mulch plug? spark plug?
This unit has none of these.
The charge plug is on the rear of the unit, you have to remove the rubber fuse block to expose the plug

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Put on mower blade for black and decker lawwn mower
ANSWER : Hi, unplug the spark plug wire.turn the mower on its side, in the middle of the blade there is a bolt. Unscrew the bolt on blade to take it off, and to put it back on, put blade on first and bolt it back together.

If this doesn’t work for you, please write back.

Thanks

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