Cub Cadet is a popular brand that produces a range of walk-behind mowers. Those are designed to provide efficient and reliable performance. However, like any piece of equipment, Cub Cadet mowers can sometimes experience issues that require troubleshooting.
Here are some of the common Cub Cadet Walk Behind Mower Problems:
- Engine won’t start
- Engine runs poorly or stalls out
- Blades won’t engage
- Uneven cutting height
- Poor cutting performance
- Excessive vibration or noise
Fortunately, many of these issues can be resolved with basic maintenance and troubleshooting. In this article, we will discuss just that!
9 Cub Cadet Walk Behind Mower Problems and Solutions
Here are the common problems of Cub Cadet walk-behind mowers and solution of those problems:
1. Starting Issues
Sometimes, the Cub Cadet Walk-Behind mowers’ engine does not start. The engine starts but quickly stalls.
The engine starts but runs poorly and rarely responds to throttle.
The most common reason for starting issues caused by bad fuel, a clogged fuel filter, or a faulty carburetor. Additionally, a dirty or worn out spark plug, not getting the right amount of current causes trouble starting.
Damaged or worn-out components such as a dirty air filter, bent or damaged blades, and loose belts can also cause starting issues.
Do the following to fix the starting issues:
- Replace the fuel,
- Check and replace the fuel filter,
- Clean or replace the carburetor.
- Check and replace the spark plug, check the ignition system, and replace any damaged wires.
- Clean or replace the air filter,
- Sharpen or replace the blades,
- Adjust or replace loose belts.
This is how you can fix the issues related to starting of a Cub Cadet walk behind mower.
2. Loss of Power
Check for vacuum leaks to the fuel pump or in the intake/carb. On the other hand, worn or dirty spark plug prevents it from igniting the fuel in the engine. The same goes for a dirty carburetor.
The fuel may be old or contaminated, preventing the engine from running smoothly. And the drive belt may be worn or damaged. It causes the mower to move slowly or struggle to cut through the grass.
Clean or replace the air filter, spark plug, drive belt and drain and refill the fuel tank.
If the carb is dirty, remove the carburetor and clean it with a carburetor cleaner. If it is beyond help, rebuild it with a carburetor rebuild kit.
3. Mulching or Bagging Problems
The mower is leaving clumps of grass behind means the grass clippings are not being properly mulched or bagged. The mower is clogs frequently.
The reasons might be the following:
- Dull blades
- Clogged deck
- Worn belt
- Wrong blade height
- Faulty discharge chute
Sharpening or replacing blades can help to improve cutting performance. Remove any debris or grass clippings from the mower deck to allow the blades to function properly.
If the belt is worn or damaged, it can be replaced to improve cutting performance. And if the discharge chute is clogged or damaged, adjust the blade height and repair or replace it.
4. Sudden Stops or Lurching
The mower suddenly stops or shuts off while in use, lurches or jerks, runs rough or stalls frequently. The blades do not engage or disengage smoothly.
Rough shifts or lurches are a common sign of problematic transmission. Replace worn-out or damaged belts, transmission gears, or a clutch of the transmission. Old or contaminated fuel, a clogged fuel filter, or a malfunctioning carburetor can cause sudden stops or lurching.
A dirty air filter, worn-out piston rings, or a malfunctioning governor can cause sudden stops or lurch as well. These should be replaced.
Check the fuel system for clogs, leaks, or other issues and troubleshoot.
5. Self-Propulsion Problems
The mower moves slowly or does not move at all when the self-propulsion is engaged. The worn or damaged drive belt is the prime cause including other worn-out components.
Replace anything that looks frail. This includes the drive belt, drive wheels, or even the transmission.
6. Throttle or Speed Control Malfunctions
There might be difficulty in starting the engine. It might constantly run a constant high speed or a constant low speed.
The throttle or speed control lever might be loose or stuck. The reasons for Cub Cadet Walk-Behind Mower throttle or speed control malfunctions are:
- Faulty throttle cable
- Broken or damaged throttle control lever
- Dirty or clogged air filter
- Dirty carburetor
- Faulty spark plug
- Damaged engine governor
Replacing the faulty parts is the way to go to fix the issue.
7. Belt Slippage
Reduced cutting performance and uneven or streaky cuts may occur due to belt slippage. The mower blades do not spin as quickly or efficiently.
You have to look out for misaligned pulleys and adjust them. Moreover, get rid of any loose or damaged tensioner and incorrectly adjusted drive belt.
8. Too Lightweight
The Cub Cadet walk behind mowers have a great cut and can move quickly. They are, however, very light in construction and cannot withstand any kind of abuse.
Hitting something, such as a large rock or a ground rod, will destroy the timed spindles, spindle belt, and possibly the entire deck. The control cables are not very strong and wear out quickly.
9. Handlebar Control Lever Problem
The handlebar or control lever may be difficult to move or feels stuck, it may not respond to input and the lever may be loose or wobbly.
Clean around the handlebar or control lever to remove any dirt or debris that may be causing it to stick. Check the cable connecting the handlebar or control lever to the transmission. Replace or reattach it if necessary.
The Cost of Fixing Cub Cadet Walk-Behind Mower Problems
Here are some examples of common Cub Cadet Walk-Behind Mower issues and their associated costs:
The Air filter replacement costs around $5-20 plus the labor. The spark plug replacement on the other hand costs $2-10 for the spark plug and $3-10 for the fuel filter.
Sharpening mower blades costs $5-15 for a sharpening tool or bench grinder, plus your time. Depending on the model and complexity of your mower, expect to pay between $50 and $150 for a belt replacement.
And finally, doing the carburetor rebuild yourself will only save you time. If you hire a professional, expect to pay between $50 and $100 for the entire thing.
Cub Cadet Walk Behind Mower Problems – FAQs
How often should I change the oil in my Cub Cadet walk-behind mower?
Oil should be changed after every 50 hours of operation or once per season.
How do I adjust the cutting height on my Cub Cadet mower?
Adjust the deck height lever located on the mower’s side.
What type of fuel should I use in my Cub Cadet mower?
Use clean, fresh, unleaded gasoline with an octane rating of 87 or higher.
How often should I sharpen the mower blade?
The blade should be sharpened at least once per season or more frequently if you notice poor cutting performance.
How do I clean my Cub Cadet mower after use?
After use, allow the engine to cool. Then, remove any grass clippings and debris from the mower’s deck and engine. Use a garden hose to wash away any remaining debris.
How do I store my Cub Cadet mower during the off-season?
Drain the fuel tank, clean the mower thoroughly, and store it in a dry, protected area.
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