6 Most Common Ferris Zero Turn Mower Problems and Effective Fixes

Ferris zero-turn mowers are ideal for commercial applications, with notable features like comfort, affordability, and impressive fuel economy. However, this lawn maintenance utility has a few issues. The most common Ferris zero turn mower problems include a hard start, uneven mowing quality, stalling, tire problems, brake issues, and excessive vibrations.

Do you own a problematic Ferris zero-turn mower or intend to purchase one? Read on as we look at Ferris mower issues and how to fix them.

Starting Issues

It is frustrating to start your Ferris mower, but it won’t crank. This issue is common in old mowers, with several possible causes.

The primary reason why your mower won’t start is due to an electrical fault, most probably a bad battery. Electric malfunctions may also be due to damaged wires and connections or a malfunctioning starter.

Other causes of a hard start include problems with the fuel line, using bad or low-quality gas, or blown spark plugs.


Jumpstart a dead battery if it is the origin of the starting problems. Replace old mower batteries that have lasted more than ten years. Sulfate buildup may block the current from the battery. Use sandpaper to eliminate the buildup and stainless steel bolts to prevent corrosion.

You must replace spark plugs after every 25 hours of service to prevent the starting hiccup and a rough idle. Check the connections and fix damaged or loose wires. 

A failing starter is another regular culprit behind a problematic start. While you can bypass a bad starter, it is wiser to replace the entire assembly to prevent a repeat of the complication. Always use high-quality fuel on your zero-turn lawn mower for the best service.

Sudden Stalling

Fuel line malfunctions can bring up various Ferris zero turn mower problems, including stalling. Besides the fuel system, stalling issues may be due to bad spark plugs and engine problems like overheating. 

How To Fix:

Start by inspecting the fuel system, as it is the most probable origin of the complication. Ensure that the tank is full and you are using the right fuel.

Drain aged gas and, if possible, clean the fuel line. Cleaning helps keep the fuel line fresh, and it is the best solution for debris in the gas tank or if you’ve used the wrong or poor-quality gas.  

Regularly replace the spark plugs and use high-grade ones for the best service. While engine overheating is among the less common Ferris lawn mower problems, you can prevent it by changing the engine oil frequently and cleaning the radiator.


With prolonged use of the Ferris mower, you may notice mild signs of wear, such as vibrations. Reasons for the vibrations include damaged, blunt, loose and unbalanced blades.

Debris in the deck and rough mowing conditions could also cause your Ferris mower to vibrate. Address vibration issues immediately to prevent overworking the engine and associated components.


Inspect the deck and blades to know what is ailing your Ferris lawn mower. You may have to disassemble the deck assembly, including the cutters, to solve the problem.

Sharpen blunt and unbalanced blades to ensure they are at equilibrium. Replace damaged blades and tighten the bolts to avoid rough cuts.

Clean the deck to eliminate accumulated debris and adjust it to the correct levels. Proper deck adjustment is an excellent way of averting problems like engine overheating and stalling due to increased resistance.

To stop the vibrations, you must change your mowing style if the yard is rugged and full of boulders and rocks. 

Rough Cuts and Difficulty Cutting Wet Grass

One of the common Ferris zero turn mower problems is rough cuts and difficulty tending to wet grass. The blades and the deck are the main culprits behind this snag. Like vibrations, it may be due to debris in the deck, a low set deck, and damaged or poorly balanced cutters.


You address the rough-cutting problem the same way you handle vibrations. Also, change the blades regularly. Get a new set of cutters annually or after 200 hours of use for efficiency.

Mowing wet grass is very challenging and may leave you with unwanted results. It is better to wait for the grass to dry to get precise cuts.

Braking Problems

Issues with the brakes are severe as you risk accidents, especially if your yard is full of obstacles. Problematic is a recurrent issue with the Ferris zero turn mower, mainly due to worn-out calipers or poorly adjusted brakes. Frequently adjust the brakes to avoid braking complications. Plus, replace worn-out calipers.

Tire Issues

The wheels can bring about issues due to punctures, wear, and loose connections. Signs of tire problems are rough driving, mower slanting, and a flat tire.

Slanting and rough driving may also be due to a faulty suspension unit. Badly damaged tires may lose traction, putting you at risk of accidents or rough cuts, especially on sloping yards.

How To Fix:

You should repair a puncture immediately after you notice it. Never drive your mower with a flat tire, as you will damage the rims and other components of the suspension unit, like the axle. Get new tires for the mower if the ones you have are badly damaged. Have a professional inspect the suspension unit.

Final Thoughts

Ferris zero-turn is an excellent line of lawn mowers, suitable for commercial use. This article looks at the common problems that affect these mowers and how to go about them. 

Ferris lawn mower troubleshooting calls for the inspection of the unit and making repairs and replacements where necessary. Regular servicing will prevent most Ferris zero turn mower problems, as Ferris mowers are robust and built for rough conditions. Get an experienced mechanic to handle complicated mower repairs.