8 Common Problems with Husqvarna Riding Mower in 2023

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Husqvarna riding mowers are one of the most popular choices for homeowners and landscapers However, like any piece of machinery, Husqvarna riders can develop issues that affect performance and require repair over time.

In this blog post, we’ll look at the most common problems with Husqvarna riding mowers and help you find possible solutions to fix them

Common Problems with Husqvarna Riding Mowers: Quick Summary

In this quick summary, we identify the most common problems with Husqvarna riding mowers to help owners troubleshoot repairs.

This table will cover typical issues ranging from engine troubles to steering faults, Mower belt problems, carburetor issues, and general wear. Keeping this table of riding mower problems in mind will allow you to recognize the causes easily.

Engine problemsEngine Starter Problems, Engine Overheating, Not Enough or Bad Oil, Engine Running Rough
Mower Blades Won’t EngageFaulty PTO clutch, Faulty operator switch,
Mower belt problemsWorn belts, Damaged deck belts, Too Loose belts
Carburetor IssuesDirty or Clogged Carburetor, Improper Carburetor Settings,
Mower Won’t Start After RunningOld spark plug, Dirty air filter
Engine smokingDirty air filters, Blocked cooling fins
Mower Excessive NoiseDamaged blades, Bent pulleys
Battery IssuesDead or Weak Battery, Corroded connections, Faulty alternator

Common Problems with Husqvarna Mowers: A Step-by-Step Guide;

Here is a step-by-step guide to addressing common problems with Husqvarna riding mowers.

Engine problems

The engine is the heartbeat of a Husqvarna riding mower, but various engine problems can arise over time, leading to poor performance.

This guide will cover diagnosing and fixing common engine issues, including starter trouble, overheating, oil problems, and rough running. Catching and addressing engine problems promptly can help prevent extensive repairs down the road.

Engine starter issues

If the engine won’t turn over or start, the most likely culprits are the starter motor, battery, or ignition switch, Begin troubleshooting by checking the battery charge and connections. Recharge or replace the battery if needed.

Engine Overheating

Your cooling system needs to be completely cleaned before it is too late in order to avoid overheating. First, start by cleaning off any dirt that has accumulated on the cooling fins and screen of the external radiator. To remove dirt and grass clumps, spray them with a hose equipped with a nozzle.

By taking the time to thoroughly clean the cooling system, you may avoid accidents involving debris and moving parts and maintain ideal engine temperatures while mowing.

Not Enough or Bad Oil

Wrong or insufficient oil can quickly damage the engines. Check oil levels frequently and add oil if needed. Change the oil and filter according to the manual’s specifications, using the correct weight and type of oil recommended for that riding mower model.

Engine Running Rough

If the Husqvarna engine starts but runs unevenly and roughly, inspect the fuel delivery components. A restricted carburetor, bad fuel filter, or failing pump can cause surging as airflow and fuel mixture are disrupted. 

To correct it, clean the carburetor passages, replace the filter, and test pump pressure to smooth out performance. Also, a clogged air filter needed to be replaced to restore proper airflow.

Mower won’t restart after running

Husqvarna riding mowers usually fail to restart after running due to a few factors. You can quickly fix them by slowly and carefully, inspecting your air filters and spark plugs.

Old spark plug

Spark plugs slowly corrode and lose their ability to fire properly over time. to resolve it Firstly, turn off the power to check the state of the device.

Look for anything that prevents sparking, such as extra debris, worn electrodes, or white crustiness.

Replace old, fouled plugs with brand-new ones that have just been removed from the container to recover lively sparks.

Dirty air filter

A clogged air filter prevents the engine from receiving oxygen, making it challenging to restart after running. Look under the housing to inspect the filter element. If clogged with debris, replace it with a new filter to restore airflow.
An experienced mower owner can troubleshoot restart issues in under 30 minutes. Keep extra plugs and filters on hand so you can replace them quickly. 

Mower belt problems

Belts are very important components in Husqvarna riding mowers. They power the cutting deck blades and drive the engine.

But when the mower belts are worn or too loose, they can affect the mower’s functioning and this must be properly diagnosed before it’s too late

Signs of Worn or loose Belts

Frayed, cracked, or slipping deck belts can cause loud squealing noises when engaging the blades. Choppy and uneven cutting is another symptom.

Flip worn belts so the grippy side contacts the pulleys, or replace belts that are too far gone.

Loose or Worn Belts

Loose or deteriorated drive belts will slip and squeal when accelerating. Visually inspect for cracks, missing chunks of rubber, and excessive deflection when pressed.

Adjust belt tension or install new belts as needed.

Carburetor Issues

The carburetor is an essential part of the Husqvarna riding mower, which mixes air and fuel in the precise ratios needed for smooth and reliable power.

However, the carburetor sometimes faces problems like dirty or clogged carburetors and incorrectly adjusted settings Both these issues can lead to poor performance from the mower

Carburetor Issues
Dirty or Clogged Carburetor

Usually, people ask us; What are the common causes of your mower’s carburetor being clogged or dirty?

A common cause of a Clogged or Dirty carburetor is residues and varnishes that pile up over time as a result of fuel additives.

The engine’s ability to receive fuel and air is affected by this. Lack of power, stalling, and surging are symptoms.
Clean the carburetor using carb cleaner aerosol spray, and replace faulty carburetor parts.

Wrong Carb Settings

Husqvarna mowers often have idle adjustment screws that are out of their proper settings, causing performance problems due to improper air/fuel mixture measurement.

For maximum power and efficiency, reset the mixture by altering the reset and turning each screw gradually.

Excessive Noise

Your Husqvarna riding mower may be making noise because you are mowing over rocks, gutter covers, or other large objects. If this is not the case, then unbalanced blades and loose bolts are more likely to be the cause of Excessive noise.

Unbalanced blades

If the blades on your mower are not balanced, they will vibrate and create noise. A blade that is not properly attached, or two blades that are touching also make an irritating sound.

To check for unbalanced blades, you can remove them from the mower and spin them by hand. If one blade vibrates more than the others, it is unbalanced and needs to be replaced or rebalanced.

Loose bolts

Loosening bolts might be the cause of your riding mower’s annoying noise. The bolts are usually present on the blade spindles, which hold the blades in place. If the blade spindle bolts are loose, the blades will vibrate and create noise.

To fix loose bolts, you just need a wrench to tighten them. If tightening the bolts does not fix the noise, there could be an issue with the blade itself that is causing the imbalance.

Related Posts

Mower Smoking

Most Husqvarna Riding Mower users Ask the question, ‘Why is my Husqvarna riding mower engine smoking?

Your Husqvarna riding mower engine is Smoking due to Excessive oil, a clogged air filter, or sometimes Blocked Cooling fins. To fix this, you need to check the oil levels and clean or replace both the air filter and cooling fins.

Mower Smoking
Dirty air filters

Air purifiers play a crucial role in engine performance. When air filters become clogged or dirty with debris like grass clippings and dust, it restricts airflow into the engine. Without enough air, the engine runs hotter, burns fuel inefficiently, and creates smoke.

Filter debris can be removed by using compressed air. However, if the paper filters seem extremely dirty, they might need to be replaced.

Blocked cooling fins

The cooling fins on your Husqvarna engine must remain debris-free for proper heat dissipation. It is located around the cylinder heads and allows airflow to regulate the operating temperature.

Use compressed air and brushes to remove any debris from the area surrounding the engine cooling fins.

Mower Blades Won’t Engage

Husqvarna riding mowers have blades that fail to engage. Because of an exhausted power source or a Faulty PTO clutch. Another potential issue is that you failed to flip the safety switch off.

Faulty PTO clutch

The PTO (Power Take Off) clutch connects and disconnects engine power to the mower deck blades. When the clutch components fail to activate, the drive shaft stays stationary and the blades won’t engage

To Fix it, examine every component of the system, beginning with the wiring. Also, ensure the clutch is receiving electrical power when trying to engage the blades Check the switch’s consistency and power supply using

Faulty operator switch

The operator switch sends a signal to the PTO clutch to engage the blades. If the switch is faulty, it may not be able to send the signal properly.

To check the operator switch, you can try to engage the blades while seated in the mower. If the blades do not engage, you may need to replace the switch

By addressing either the faulty PTO clutch or operator switch, the Husqvarna’s mower deck should once again engage smoothly

Mower Battery Issues

Reliable battery power is essential for starting and running riding lawnmowers. However, common battery issues can leave you frustrated in a no-start situation.

Corroded connections, dead cells, and a malfunctioning alternator are usually the causes of battery failure.

Corroded connections

Identifying and resolving corroded battery connections is the easiest problem. First, Disconnect the cables, then open the hood and check the connections between the chassis ground and the battery cables.

A crust that is white, green, or blue signifies a thick, corrosive layer that increases resistance. Disconnect the cables, also use a wire brush to clean the connections. 

Keep in mind that Cables should be permanently attached, and insulating lubricants should be applied to stop further corrosion.

Dead cell(s)

If cleaning battery connections doesn’t resolve starting issues, the problem may be with individual dead cells within the battery. You need to first measure the voltage of each cell with a voltage tester to make sure this is the case.

A dead cell is indicated by a measurement below 2.1 volts. When one healthy cell dies, the remaining healthy cells are under higher stress and break down more quickly. Hence, batteries with a dead cell rarely have a single failure.

Faulty alternator

The alternator generates 14 volts and then delivers the electricity to the battery. then the battery can complete its charge.

However, if the alternator breaks down, the battery will eventually run out, and your mower will eventually stop working or develop other problems.


In summary, the most common problems with Husqvarna riding mowers range from engine problems to Excessive noise, Loose belts, faulty carburetors, and battery issues. If you fix these issues and follow the suggested maintenance procedures, your mower will start and operate easily.


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