Black Decker Lawn Mower Won’t Start

Black Decker Lawn Mower Won’t Start. Your Black Decker lawnmower may need maintenance if it’s been sitting for a while and now won’t start. If you haven’t used your lawnmower in a while, you may have to clean, tighten or replace parts.

Your lawnmower might not start for different reasons depending on its model and make, including old fuel, a bad spark plug, electrical issues, and more.

For example, sometimes it might be due to weather-related problems like rain or snow.

Either way, if the issue is not resolved quickly, it can lead to other issues down the road causing much larger problems than when you first noticed the issue.

Black Decker Lawn Mower Won’t Start

black decker lawn mower won't start

If your electric lawn mower won’t start, then it’s probably because there is some debris lodged in its blades.

Make sure that no sticks, grass, leaves, or anything else are stuck in between the blades; otherwise, the motor won’t be able to engage.

Here we discuss some problems with Black decker lawnmowers that won’t start.

Issue With Rewind Spring

The rewind spring might be broken. When the starter rope is pulled and released, the rope doesn’t recoil back onto a pulley.

If the rewind spring is broken, the rope can’t be wound back up again on a pulley after being pulled to start the engine. As a result, the engine won’t start.

The replacement rewind spring may be located next to the old one or in a different part of your lawn mower’s engine housing, so check carefully before beginning any repairs.

Problem With Recoil Starter

A recoil starter is a comparatively old-fashioned way of starting up an engine.

When you are using the vibratory system, the starter pulley and cam alternately engage with the clutch to rotate the flywheel.

When this occurs, the starter assembly moves from its resting position to rotate and rewind the sectioned cord. In case of any malfunction, ensure that you have replaced the faulty part.

Error In Recoil Spring

When the starter rope is pulled and let go, the recoil spring works to make sure that the rope recoils back onto a pulley so that it’s able to operate the timing of your lawnmower engine.

If there aren’t springs in place, then your engine won’t be able to turn over because you won’t have anything retracting the rope back onto the pulley.

By replacing the recoil springs or even buying a whole new assembly, you’ll be able to get yourself going again.

Defective Fuel Filter

Over time, old fuel can naturally evaporate and become thick, which makes it especially hard to run through a fuel filter.

When this occurs, it’ll be almost impossible for gas to flow freely and correctly to the engine or other parts that need their fill of PEM-approved energy.

If too much fuel has evaporation over time, drain the excess from your lawnmower and replace your lawn mower’s fuel filter as well as clean out any extra gunk that might have built up inside.

Faulty Flywheel Key

faulty flywheel key

the flywheel key might’ve snapped in two. The flywheel key is a small metal piece that fits into the crankshaft and engages with the flywheel.

If the lawnmower engine stops suddenly due to hitting a hard object, the flywheel key snaps in two so as not to cause serious damage.

Should your lawnmower be combusted, for this reason, you need to check to see if the same has switched place occurs.

If so, try checking into local suppliers of your make/model of the mower to see what parts are compatible with fixing it.

Carburetor Malfunction

The carburetor might be clogged. A clogged carburetor is commonly caused by leaving fuel in the lawnmower for a long period of time.

Over time, some of the ingredients in the fuel may evaporate leaving behind a more viscous substance that can accumulate within its pathways and prevent the engine from starting.

If you suspect your carburetor to be plugged up from old fuel, try cleaning out these parts with Carb Cleaner before you resort to attempting outright replacement or reconstruction.

Failed Ignition Coil

The ignition coil sends voltage to the spark plug while the engine is running. If the ignition coil is faulty, it may be responsible for stalling your engine on account of not being able to send voltage across to your spark plug when required.

Before replacing the ignition coil, we would advise testing the spark plug to determine if this is indeed the problem.

If you have confirmed that the spark plug works properly and you are still having problems with your engine stalling, then it’s likely a fault with your ignition coil, and so you would be best advised to replace it first and test further if necessary afterward.

Spark Plug Issue

spark plug issue

Check the spark plug for signs of wear or damage. If there’s a crack or burn at the electrode, if heavy carbon buildup is present, or if there are worn-out insulators, replace the spark plug.

To determine if the sparkplug has issues and needs to be replaced, use the test light. If the light doesn’t flash while you start and crank up your engine.

It means that the spark plug is either defective or simply worn out and should be replaced by a new one.

Black Decker Lawn Mower Won’t Start

Related Guides