Zero-Turn Mower Pulling to One Side Let's Fix That!

Zero-Turn Mower Pulling to One Side: Let’s Fix That!

Hey there, fellow lawn enthusiast! Have you ever been out on a sunny day, ready to give your yard that perfect, fresh-cut look with your trusty zero-turn mower, only to find it veering off to one side like a wayward shopping cart? Don’t worry; you’re not alone! It’s a common issue that many zero-turn mower owners face. But fear not, because today, I am writing a complete blog for you, the nitty-gritty of why your zero-turn mower insists on taking you for an unexpected spin and, more importantly, how to fix it?

Why Moss Grows in Your Lawn

Moss growth in lawns can be attributed to several key factors that create favorable conditions for its development. Understanding these factors is crucial for effectively addressing and preventing moss infestations. The primary reasons behind moss growth are:

Acidic Soil Conditions:

  • Moss prefers acidic soil with a low pH.
  • Highly acidic soil inhibits grass growth, allowing moss to thrive.

Low Nutrient Levels:

  • Nutrient-deficient soil lacks essential elements for healthy grass.
  • Moss can outcompete weak grass in such conditions.

Inadequate Sunlight:

  • Moss is shade-tolerant, making it suitable for areas with limited sunlight.
  • Dense shade prevents grass from flourishing, allowing moss to take over.

Excessive Moisture:

  • Moss thrives in damp environments.
  • Poor drainage or overwatering can create ideal conditions for moss growth.

Compacted Soil:

  • Soil compaction restricts grass root growth.
  • Moss can establish itself in compacted soil more easily.

Poor Lawn Care Practices:

Neglecting proper lawn care, such as infrequent mowing or lack of aeration, weakens the grass.
Weakened grass is more susceptible to moss invasion.

Understanding these factors is the first step in addressing moss growth in your lawn. By identifying the underlying causes, you can take targeted corrective actions to restore the health and vibrancy of your grass while preventing moss from taking over.

What’s Making Your Zero Turn Mower Misbehave? (Pulls to one side)

Before we jump into solutions, let’s demystify the mystery behind why your zero-turn mower is acting like a rebellious teenager. There are a few usual suspects responsible for this wayward behavior:

Unmatched Tires

Improper Tire Pressure

Imagine having one shoe bigger than the other; you’d walk funny too! Uneven tire pressure is one of the top culprits here. If your mower’s tires aren’t equally inflated, it’s like having a lopsided set of wheels. Not cool, right?


  • Park the mower on a level surface.
  • Use a tire pressure gauge to check each tire’s pressure.
  • Adjust the tire pressure as needed to ensure they match.
  • Be sure not to exceed the recommended PSI for each tire.

Unadjusted Traction

When both throttles are pushed forward simultaneously, but one wheel gets more power than the other, your zero-turn mower’s traction might suffer. This imbalance can cause one side to be weaker, leading to the dreaded veering.


  • Check the tire pressures on both sides of the mower.
  • If they’re not equal, adjust the traction.

Steering Problems

Steering problems can be a real headache. If your mower’s steering isn’t correctly aligned, you’re in for a zigzagging adventure on your lawn. Unadjusted drive arms and bad dampers can also contribute to this wobbly journey.

Unadjusted Drive Arms

While not a severe issue, misaligned steering can lead your mower astray. Even a slight misalignment can result in unintentional deviations from your mowing path.


  • Unscrew the upper drive arm base handlebar hardware.
  • Adjust the handlebar position as necessary and reattach the hardware.
  • Check and tighten any loose hardware screws on the lower drive arm’s base.

Bad Dampers

Dampers play a vital role in preventing ground damage and sudden hydraulic shifts. They return control arms to their neutral position. When dampers malfunction, they might not pull control arms back effectively, causing your mower to pull.


  • Inspect the dampers for damage
  • If necessary, replace the damaged dampers.

Brake Problem

Is one of your brakes feeling a bit clingy? Dragging brakes can pull your mower in the wrong direction faster than you can say, “Straighten up!” This might happen due to a frozen brake caliper or other brake-related issues.

Dragging Brake

Mowers equipped with disc or drum brakes can experience pulling if one brake doesn’t release cleanly. It could be due to a frozen brake caliper, where the piston gets stuck, leading to misaligned and frozen brake pads..


  • Remove each tire and repair the dragging brake.
  • Apply pressure with a C-clamp to release stuck caliper pistons
  • Ensure the brake system’s hydraulic force frees a seized caliper piston.

Hydrostatic Transmission Problems

Sometimes, it’s what’s under the hood that’s causing the ruckus. Air in the hydrostatic motor or a misplaced freewheeling rod can lead to power imbalances, making your mower sway to one side.

Air in the Hydrostatic Motor

Hydraulic fluid cavitation can occur in one of your mower’s hydrostatic motors, resulting in loss of power on one side.


  • Inspect the hydraulic fluid’s condition.
  • If air has contaminated the fluid, drain and refill it correctly.

Displaced Freewheeling Rod

Freewheeling rods disengage hydrostatic motors. A displaced or damaged freewheeling rod can weaken one side, causing a pull.


  • Examine the freewheeling rod on the weak side.
  • Repair or replace any damaged or displaced freewheeling rods.

Mower Deck Problems

Lastly, your mower’s deck isn’t off the hook either. An imbalance in blade weight or a stripped spindle can have your mower dancing to its own tune.

Imbalance Blade Weight

An imbalance in blade weight can cause your zero-turn mower to pull to one side as one blade carries more weight.


  • Spin the mower to assess blade weight balance.
  • Add weight to the lighter blade until both are balanced.

Stripped Spindle

A stripped spindle can lead to blade wobbling, causing your mower to veer off course.


  • Remove the mower deck spindle assembly cover.
  • Replace the stripped spindle with a new one.

Keep Your Mower in Tip-Top Shape

Remember, maintaining your zero-turn mower is like giving it a spa day. Here are some bonus tips to keep it in peak condition:

  • Regularly Check and Adjust Tire Pressure: Before each mowing session, give those tires a once-over. Balanced tire pressure ensures a straight path.
  • Inspect Steering Components: Every so often, take a look at your mower’s steering components. Catching issues early can prevent bigger problems.
  • Replace Dampers as Needed: If your dampers aren’t dampening as they should, it’s time for some replacements. Your mower’s stability depends on it!
  • Brake Maintenance: Show your brakes some love. Lubricate them and ensure they’re releasing correctly to avoid unnecessary drama.
  • Hydrostatic System Care: Keep an eye on hydraulic fluid levels and quality. Top up or replace the fluid to maintain power balance.
  • Mower Deck TLC: To avoid wobbles, inspect the mower deck and blades regularly. Swap out damaged blades promptly.
  • Balanced Blade Weight: Ensure your blades are weight buddies. Balanced blades mean a balanced mower.
  • Freewheeling Rods in Check: Periodically inspect the freewheeling rods to keep them in tip-top shape.
  • Clean and Lubricate Moving Parts: A little TLC for moving parts can prevent wear and tear.
  • Professional Servicing: If you’re ever unsure about maintenance tasks or run into complex issues, don’t hesitate to call in the pros. They’ll have your mower purring like a kitten.

Wrapping It Up

nd there you have it, a guide to fixing that pesky issue of your zero-turn mower pulling to one side. Armed with these tips and a little elbow grease, you’ll be back to enjoying your mowing sessions without any unexpected detours. So, gear up, grab that steering wheel, and go conquer your lawn with confidence! Got any mower tales or tips of your own? Share them in the comments below.

Naveed Aanjum author

About Naveed A Hashmi

In my childhood, I used to see my parents while working in the land, for these reasons today I have been serving the same as our own tradition and culture. I thus love to stay in it, because I want to learn something advanced and new so that I may improve my farm’s contour and help others with my experience.

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