Murray lawn mowers have built a solid reputation for being reliable, efficient, and cost-effective tools for homeowners and landscaping professionals alike. However, Murray mowers are susceptible to wear and tear over time, just like any other lawn care equipment. Whether you own a push mower, riding mower, or self-propelled model, encountering occasional issues is part of regular maintenance.

The good news? Many of the most common Murray lawn mower problems can be resolved quickly without the need for professional repairs. In this blog, we'll walk you through the top 7 Murray lawn mower issues and provide straightforward solutions to get your mower back in top condition fast.

1. Murray Lawn Mower Won't Start

There is nothing more annoying than getting ready to mow your lawn and discovering that your mower won't start. This is among the most frequent problems Murray owners face.

Common Causes:

  • Old or contaminated fuel
  • Dirty carburetor
  • Faulty or fouled spark plug
  • Blocked air filter
  • Dead or weak battery (for electric-start models)



Quick Fixes:

  • Replace old fuel: Gasoline degrades over time. When storing the mower for long periods of time, always use fresh fuel and think about adding a fuel stabilizer.
  • Inspect the spark plug: Take it off and look for carbon buildup or wear. If damaged or severely fouled, replace.
  • Clean the carburetor: If your mower sits unused for long periods, fuel residues may clog the carburetor jets. Use a carburetor cleaner or a rebuild kit.
  • Check and clean the air filter: Proper combustion is prevented when airflow is restricted by a clogged filter.
  • Charge or replace the battery: For electric-start models, test the battery and replace if it no longer holds a charge.



Pro Tip: Regularly starting and running your mower, even during the off-season, can help keep the fuel system healthy.

2. Engine Runs Rough or Stalls

A running engine that stalls frequently can make mowing frustrating and inefficient.

Common Causes:

  • Dirty fuel system
  • Water contamination in the fuel
  • Partially clogged carburetor
  • Faulty ignition coil
  • Restricted airflow due to a dirty air filter



Quick Fixes:

  • Flush the fuel system: Drain contaminated fuel and refill with fresh gasoline.
  • Clean or rebuild the carburetor: Carefully disassemble, clean, and reinstall, or use a rebuild kit if necessary.
  • Replace the air filter: Always ensure the filter is clean and debris-free.
  • Test the ignition coil: Check its functionality with a multimeter and replace it if it's broken.

Pro Tip: Preventative maintenance, such as changing the air filter and cleaning the carburetor at least once a season, can prevent stalling issues altogether.

3. Self-Propelled Drive Not Working

Self-propelled Murray mowers save time and effort, but when the drive fails, mowing becomes far more difficult.

Common Causes:

  • Worn or broken drive belt
  • Stretched or damaged drive cable
  • Transmission failure
  • Debris interfering with drive components



Quick Fixes:

  • Inspect and replace the drive belt: Over time, belts can stretch, crack, or break.
  • Check the drive cable: Ensure it's properly tensioned and free of damage.
  • Clean the wheels and drive assembly: Remove any dirt, grass, or debris.
  • Examine the transmission: If other fixes don't resolve the issue, a failing transmission may require professional service.

Pro Tip: After every usage, clean the mower's deck and wheels to avoid accumulation that can impair drive performance.

4. Blades Not Cutting Evenly

Uneven cuts can leave your lawn looking patchy and unkempt, defeating the purpose of mowing.

Common Causes:

  • Dull or bent blades
  • Improper deck level
  • Uneven tire pressure
  • Obstructions or debris under the deck



Quick Fixes:

  • Sharpen or replace blades: Regular sharpening maintains cutting efficiency.
  • Level the deck: Follow the owner's manual instructions to ensure the deck is even.
  • Check tire pressure: Inflate tires evenly to the recommended PSI.
  • Clear the deck: Clean any grass clumps or dirt that might be affecting airflow and blade performance.



Pro Tip: Inspect blades after every 20 hours of mowing to maintain optimal cutting quality.

5. Excessive Vibration During Operation

Excessive vibration isn't just uncomfortable—it can signal more serious problems.

Common Causes:

  • Bent or unbalanced blades
  • Loose engine bolts or fasteners
  • Worn pulleys or bearings
  • Debris caught in the cutting system



Quick Fixes:

  • Inspect and balance blades: Replace bent blades and balance new ones before installation.
  • Tighten bolts and fasteners: Make sure all mounting points are secure by regularly inspecting them.
  • Examine pulleys and bearings: Replace any worn-out or broken parts.
  • Remove any debris: Ensure nothing is caught in the blade or drive mechanisms.



Pro Tip: A balanced blade not only prevents vibration but also extends engine and deck life.

6. Excessive Smoke from the  Engine

Seeing smoke billow from your mower can be alarming, but often the fix is simple.

Common Causes:

  • Oil overfill
  • Oil leaks
  • Clogged air filter
  • Internal engine wear (rings, valve seals)



Quick Fixes:

  • Check oil levels: Ensure you're not overfilling. Drain excess oil if necessary.
  • Inspect for leaks: Tighten any loose gaskets or replace seals.
  • Clean or replace the air filter: Ensure proper airflow into the combustion chamber.
  • Engine assessment: If internal wear is suspected, consult a professional technician.

Pro Tip: Always check oil levels on level ground before operating the mower.

7. Mower Won't Move or Feels Sluggish

If your riding mower or self-propelled model isn't moving properly, several factors might be to blame.

Common Causes:

  • Drive belt issues
  • Transmission problems
  • Low hydraulic fluid (for hydrostatic models)
  • Stuck wheels or axles



Quick Fixes:

  • Inspect the drive belt: Replace if worn or broken.
  • Check transmission components: For hydrostatic mowers, ensure fluid levels are correct.
  • Lubricate wheels and axles: Apply the appropriate lubricants to free up stuck components.
  • Inspect linkages: Ensure all control cables and linkages are functioning correctly.

Pro Tip: Clean and lubricate moving parts on a regular basis as part of your regular maintenance regimen.

Final Thoughts

Murray lawn mowers are dependable machines, but like any mechanical equipment, they require regular attention to stay in peak working condition. Understanding these typical problems and how to fix them will help you save time and avoid needless repairs.

Performing routine maintenance, such as regularly changing oil, sharpening blades, and keeping the mower clean, can dramatically extend the lifespan of your Murray mower. However, don't be afraid to seek advice from a qualified technician or an authorized Murray repair facility if you run into complicated or recurring problems.

At WholeToolBox, to keep your lawnmower running efficiently season after season, we're here to assist you in locating the appropriate components and instructions.

FAQs

How do I find the model number on my Murray lawn mower?

The model number is usually located on a metal plate or sticker, often found on the deck, rear frame, or engine housing. It typically includes both model and serial numbers.

Is it easy to perform maintenance on a Murray lawn mower?

Yes, with basic tools and a little guidance, many maintenance tasks like oil changes, air filter replacement, and blade sharpening can be done by most homeowners.

What type of oil should I use in my Murray lawn mower?

For most Murray lawn mowers, SAE 30 is recommended for warmer temperatures, while SAE 5W-30 can be used for colder conditions. Always check your owner's manual for specific recommendations.