Yard Machines Lawn Mower Won’t Start. Your Yard Machines lawn mower has been sitting for a while now and you’re having trouble getting it to start. There are many reasons why this could be. First, you may have left gas in the mower which has now congealed or turned stale.
This can severely affect the engine’s ability to turn over so instead of trying that first, get that tank drained and then fill only enough to get it running again.
Another reason your mower might not be starting up is that its spark plug could be out of whack, or it could even be something much simpler like a loose cord or poor throttle control.
Essentially there are many reasons why your Yard Machines lawn mower wouldn’t start if you let it sit too long – we’ve seen it happen before.
Yard Machines Lawn Mower Won’t Start
Yard Machines lawn mower won’t start. There may be old or bad fuel in the carburetor float bowl.
Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance that can clog up the carburetor and prevent the engine from starting. If the carburetor is clogged, try cleaning it with a carburetor cleaner.
Faulty Flywheel Key
the flywheel key might have broken in half. The flywheel key is a small metal piece that fits into the crankshaft and engages with the flywheel to make sure the lawnmower spins properly before providing the energy needed to power your garden’s mowing needs.
If something gets caught up in the blades, like a small pebble, then it will prevent the blades from spinning which could cause them to stall or even break.
To determine if this key has been damaged, you need to remove this assembly from your engine. Inspect the metal Flywheel Key for any damage – to check for cracks and ensure that it’s intact.
The carburetor may contain a blockage. A blockage may be caused by leaving fuel in the lawnmower for too long a time.
Leftover fuel can evaporate, leaving behind thick, sticky deposits that can clog up the carburetor and affect its performance.
A blocked carburetor can stop an engine from starting. If you find your carburetor to be a little sluggish or otherwise acting suspiciously, try giving it a clean-up with some specialized carb cleaner.
If this doesn’t work or if your problem is more serious and no amount of cleaning seems to fix it look into replacing or rebuilding the entire unit.
Defective Spark Plug
Inspect your spark plug for signs of wear and tear, as these will give you an idea of how the engine has been performing and if it’s ideal to continue using it with no issues.
If the porcelain insulator is cracked, an electrode is burned away or damaged, or there is heavy buildup at the electrode, your spark plug might be malfunctioning in some way or have reached its life expectancy already.
To determine whether this is indeed the case or not, use a spark plug tester to see if you can produce a strong enough spark between its terminals.
If there is no spark present, then you know that your spark plug has indeed reached its lifespan and needs to be replaced because it’s not protecting your engine anymore.
Spring Rewind Fault
The rewind spring may require repair. When the starter rope is pulled and released, the rewind spring recoils it onto a pulley.
If you know that the rewind spring needs to be replaced, replace it. Many rewind springs can be replaced individually; however, the replacement of an entire pulley may be easier.
Error With The Coil Spring
A rope with a starter mounted on the right side of the engine drives the flywheel. When pulling and letting go of the starting cord, the recoil lever which is attached to a spring-loaded shaft is pulled back by a spring.
If that recoil spring breaks it will not allow for forceful recoil on the shaft thereby preventing your car from starting perfectly.
One can replace many starters, but later down the line, it could lead to bigger problems on other parts so it’s recommended to replace such problematic mechanisms altogether instead.
Cause Of Fuel Filter
One of the reasons lawnmowers stop running is because the fuel filter is clogged.
When a lawnmower sits for more than a month, fuel naturally separates and tends to make a thick substance that sticks to small components more easily.
If you look inside your lawn mower’s fuel tank and it looks like the contents are old or black, you need to change the fuel filter immediately.
If not, this old fuel can ruin your lawnmower, making it difficult for starting up again. Once you change the filter, fill up your gas tank with fresh gas from an approved source and cross your fingers that it won’t happen again.
Ignition Coil Problem
The ignition coil sends voltage to the spark plug while the engine is running. If the ignition coil is defective, the engine may not start.
Before replacing the ignition coil, test it by disconnecting it from its location on top of the engine and then placing a multimeter across its terminals with one lead touching each terminal and turning on the ignition switch.
The multimeter should show that there is voltage on both leads and that this voltage changes more than 20 millivolts when you turn your key switch on and off.
Otherwise, proceed to put a new ignition coil in its place and reattach it to its previous position atop your engine.
Yard Machines Lawn Mower Won’t Start