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Dewalt 20v Blower Problems

The best blowers for blowing leaves on the market for producing a high maximum air flow are the range of hand blower made by DeWalt. Even the best tool, though, occasionally fails. Be aware of the major DeWalt leaf blower 20v issues before purchasing or if you already own one.

When using the cordless DeWalt 20V leaf blower, one of the most frequent issues is that it stops operating. But while using this outdoor power equipment, you could also run into additional issues. But the fundamental question is why it occurs and how to remedy it.

They produce well-liked electric blowers that may clean your deck, garage, or yard is the DeWalt 20V leaf blower. This indispensable all-year-round tool is portable, making it simpler to maintain a clean yard.

In our guide, before you discover your DeWalt lawn mower keeps shutting off, you find your DeWalt blower shuts off, among other niggles By the end, you’ll see the most common issues and what you need to do to fix your handheld blower. (Read John Deere Fault Codes List)

Dewalt 20v Blower Problems and Trouble Shooting Guide

Dewalt Leaf Blower Will Not Start

It’s likely a power issue if your electric leaf blower won’t start and blow leaves, which is bad if you have a large yard. Check your fuse box or circuit breaker to make sure the outlet is receiving power and make sure it is plugged into an outlet.

Before trying to start the blower once more, you might need to push the “Test” and “Reset” buttons on your outlet’s ground-fault circuit interrupter (GFCI). Take your blower to a servicing facility if it is receiving power, but still won’t start.

If issues persist or you use a corded blower, try a different power outlet or extension cord to rule out a power problem. A voltage tester can check the power switch’s contact, which may also be the source of the issue.

Troubleshooting A Cordless DeWalt Leaf Blower

Dewalt Battery and Charger Troubleshooting

The DeWalt 20v blower problems are like the drawbacks of other cordless tools including their batteries and chargers. The ease of these quality battery-operated handheld blower options is well known, but batteries and chargers fail, and getting rid of these things is a hassle.

Dewalt battery chargers are quality, but occasionally they may malfunction, causing your batteries to eventually drain quickly. Try charging a new battery and comparing the results to an old battery to see if the Dewalt charger needs to be replaced.

Check the battery life when using a handheld blower, and if necessary, let the blower charge for an extended period. Try starting it on and connecting it to a socket. If it does, your handheld blower battery might not start the engine on its own because it has lost wattage from excessive use.

Try testing voltage or capacity instead of using a voltmeter if your battery is externally charged. Better still, try putting in a spare battery in your battery blower to see if that works. You should also check the battery installation, as it won’t work if the contacts don’t touch.

Dewalt Battery Charging Procedure

The following is the proper way to charge your batteries:

  1. Battery discharge when used normally. When you see the tool is losing power, remove the battery.
  2. Do not tape the trigger in the ON position.
  3. To get the battery to room temperature, let it sit outside of the charger for at least 2 hours.
  4. Place the battery in the charger overnight to give each cell a complete charge (A minimum of 8 hours at room temperature).

If there is no variation in run-time, the battery has either totally drained, run out of life, or sustained irreparable damage. Therefore, the battery needs to be changed in any scenario.

Dewalt Battery Charging Tips

Leaf Blower Battery Won’t Charge

When the red charging light turns on, place the battery into the charger. If the battery is dead, charge it for up to 8 hours.

  1. Connect the charger to a functional outlet.
  2. By inserting an appliance into the receptacle, you can check the current.
  3. Ensure the outlet is connected to a light switch that turns the power off when the lights are turned off.
  4. Move the charger and handheld blower tool to an area where the surrounding air temperature is at least 40 °F (4.5 °C) and no higher than 105 °F (40.5 °C), and there is a working outlet.

How You Reset a DeWalt Battery

DeWalt lightweight cordless leaf blowers eliminate the need for electrical extension cables by using a rechargeable nickel-cadmium battery pack.

The battery packs are long-lasting and quick to charge, but they have a microchip that turns them off if they get too hot.

You must restart the battery pack when it switches off. The microchip’s memory is erased during the reset operation, giving the chip the green light to charge like a fresh battery. (Find the Best Riding Snow Blower)

To reset your battery:

  1. To remove the battery pack from the DeWalt power tool, press the battery pack removal button on the rear of the tool’s handle.
  2. Slide the battery down the rail track on the power tool’s base.
  3. With the metal contact side facing the metal contacts in the charger, insert the battery pack into the battery pack charger.
  4. Give the battery pack eight hours to charge until fully charged.
  5. You’ve just reset your DeWalt battery pack.

It is rare for damaged wires anywhere around the battery as it works by contact. However, some models may have damaged wires in the harness if it is backpack-style leaf blowers.

An interrupted power supply can cause the blower speed to speed up and slow down. You will need to replace any broken wires.


The impeller, another name for the fan in your handheld blower, contains many fan blades that direct the airflow as it is spinning to produce it. These fan blades can break now and again, and a broken fan blade can cause excessive vibration.

Some leaf blowers have a vacuum attachment. As a result, the fan blades can occasionally be damaged by dirt and debris being sucked up into them. The fan blades may become dirty over time, increasing vibration, which is a widespread problem with lots of use.


In most cases, neither typical use nor normal wear will cause significant vibration from the washers in your leaf blower. Losing a washer, however, may cause excessive vibration of other components like the isolators or impeller.

When a leaf blower is disassembled, washers can occasionally be put in the wrong spot. There may be increased vibration because of this.

DeWalt Trouble Shooting Tips and Guide

DeWalt Handheld Blower Making Rubbing Sound in Blower Fan

You should examine the housing, washers, flywheel, or impeller nut if your handheld blower fan is making a clicking, rubbing, or loud noise.

Using our repair and symptom guide, you can more accurately determine the part that has to be changed and how.

Consult the manufacturer’s manual if your model requires special repair instructions. If, for example, you purchased a larger quality model, you could find the DeWalt 60v blower problems are often the same, yet they take longer to manifest. (Find the Best Battery Powered Leaf Blower)

Dewalt Leaf Blower Doesn’t Blow Air

In most cases, if your blower won’t blow, examine the impeller nut, fan, and tubes.

Your leaf blower instructions may call the impeller a fan. As above, a fan attached to the crankshaft delivers airflow. Your leaf blower’s fan has fins that move air.

Occasionally, rocks and debris can harm these fins, and damaged fins will stop the fan from blowing air.

The leaf blower’s tubes direct air flow: in some models, the tubes funnel air to a nozzle that boosts airflow. However, it can seem that the blower isn’t blowing air or isn’t blowing enough air, and if you have missing or damaged tubes, they cause this.

Some leaf blowers allow you to redirect airflow via the blower housing, allowing it to serve as a vacuum. However, if your blower isn’t blowing air, it may be misconfigured.

Leaf Blower Dies At Full Throttle

A slightly clogged leaf blower air filter can cause the engine to start but die at full power. Over time, dirt can accumulate in the air filter and choke the engine.

As clogged, the air filter let’s just enough air into the engine to idle, but it shuts down when you speed up.

A clogged air filter might also cause a harsh blower operation. Therefore, air filters should be cleaned as part of your regular blower maintenance regimen.

Likewise, a muffler reduces leaf blower engine noise, and a spark arrestor stops engine sparks from starting the blower and igniting.

Leaf blower exhaust gases enter the muffler and spark arrestor through the exhaust port. Over the life of your blower, carbon deposits from the engine exhaust can be deposited in the muffler and spark arrestor screen.

If the exhaust port, muffler, or spark arrestor is clogged with carbon, exhaust gases can’t leave the engine.

This can cause full-throttle engine failure. In addition, deposits can build up over time, so you should clean your muffler/spark arrestor during your tool’s periodic maintenance. (Read Where Are Husqvarna Chainsaws Made)

Do’s and Don’ts of Using A Dewalt Battery

Please use genuine DeWalt batteries to ensure safe compatibility with DeWalt tools and chargers and the best possible performance.

Increase Dewalt Battery Life

As soon as you see a noticeable loss of power from the tool, stop using the battery. A battery could be damaged if it is completely discharged.

To prevent draining the battery, avoid taping the trigger. (this could void your warranty)

The battery is affected by temperature. Batteries won’t accept a complete charge if they are too hot (105°F or above) or cold (below 40°F).

Outside the 40°F-105°F range, charging batteries might cause a permanent runtime loss, shut down unexpectedly, and won’t blow air.

A chemical reaction occurs when batteries are charged and discharged. If the environment is excessively hot or cold, the chemical reaction is disrupted, resulting in a loss in run-time.

Transport carefully. When transporting batteries, fires can be caused if the battery terminals unintentionally contact conductive materials like keys, coins, and tools.

Anytime you transport individual batteries, ensure the battery terminals are shielded and securely insulated from materials that could encounter them and cause a short circuit.

Dewalt Blower Engine Rpm’s Too High

Check the fan, impeller, rod, or governors if the blower motor RPMs operate too high. The major causes of this are listed below.

Dewalt Broken Fan Blades Trouble shooting guide

Broken Fan Blades

Your blower’s fan, known as an impeller, rotates to draw air into the blower and is powered by the motor. Your blower tube directs air through the housing side and pulls it toward the front of the blower.

The fan’s blades can break off in multiple places, increasing the engine’s RPM. Throughout the blower’s lifespan, debris may unintentionally be pulled into the fan blades, which may cause their breaking.

To help prevent this problem, remove debris entering the blower housing. You will need to replace a broken fan as there’s no way to fix it, and it won’t blow effectively until it has been changed. (Read Dewalt 20v Blower Problems)

Broken Impeller

Your leaf blowers impeller is essential to its efficient operation. The impeller rotates to draw air in, at which time it is directed into the blower tube.

Your engine’s RPM may be excessively high because of a broken impeller, typically brought on by debris harming the fan blades and entering the blower housing. Ensure the blower housing is free of debris to lessen the possibility of your impeller blades failing.

Loose Rods

With a vast, wheeled blower powered by a 4-cycle engine, a rod connecting the throttle control to the governor’s arm is present. No of the circumstances, the governor will control the engine’s speed.

To keep the speed, the governor will open the throttle further when the going gets tough.

The governor won’t be able to regulate the throttle if the rod connecting it to the governor becomes damaged or becomes loose. So, your engine RPMs may run too high because of this.

Faulty Governors

A large, wheeled blower (looks like a lawn mower) damaged by a 4-cycle engine may have a broken or incorrectly set governor. Your leaf blower’s governor is made to keep the desired speed constant.

It works with the throttle to manage that speed. Your engine’s RPMs may run excessively high if your governor is set incorrectly.

Higher-than-normal engine RPMs might be caused by a damaged governor or governor’s arm.

Dewalt 20v Blower Problems