How to Troubleshoot Riding Lawn Mowers?


Every now and a then you are going to run into a minor hiccup with your riding lawn mower (click for guide). Just like with any other mechanical device, there will be some minor setbacks or problems that pop up but luckily, most of these glitches can be remedied quiet easily with a few trouble shooting tips and a small amount of patience.

How to Unscrew a locknut on Riding Lawn Mowers Twin Bagger?

Look for the holes that are in the face of the pulley. Insert a sturdy and durable screwdriver or steel rod. This will prevent the pulley from turning while you unscrew the locknut. Keep one hand on the screw driver or steel rod and use the other to unscrew the lock nut. If the lock nut fits onto a reverse thread, then you will need to unscrew it in a clockwise motion. A conventional thread will be turned in an anti-clockwise motion.

What Type of Batteries do Riding Lawn Mowers Use?

Most riding lawn mowers will run on a standard size battery which makes it easy to replace when the battery goes. Variations in battery construction might prove to be a bit of a challenge for some mowers which may use a differently constructed battery. Most riding lawn mowers run on a 12V battery yet there are higher voltages available such as 36V or 40V. However these are designed to power electric push mowers and are not to be confused with riding lawn mowers.

Riding lawn mower batteries are group U1 and are about 8.3 inches long and 5.1 inches wide. Some batteries are made with metal plates which are submerged into sulphuric acid and others have lead plates which are filled with antimony. These types of batteries tend to lose their charge over time even if they are not in use.

The antimony content of the plates tends to cause corrosion of the internal battery components. Some of the newer batteries have calcium imbedded into their plates which helps to reduce self-discharge and minimise corrosion. This type of calcium plated battery is also less to prone to bumps and knocks which make them less susceptible to vibration and impact problems.

What kind of oil do Riding Lawn Mowers Use?

When it’s time for an oil change on your riding lawn mower, its best to make sure you are using the right type of oil to avoid long term damage to your mowers internal engine components. The oil recommendation will vary according to the outdoor temperature you will be using your mower in. Different mowers will require different types of oil so always check you manual for the manufacturer’s instructions.

Steer clear of oil with special additives and use only oils with a high quality detergent such as SF, SG, SH or SJ. Synthetic oils can be used because they are acceptable at all temperatures. Oil acts as a lubricant for the crankcase inside your riding lawn mower and without it; you run the risk of overheating and seizing the engine up.

You should always check that your mower has enough oil before each use. In colder weather, oil with a thinner viscosity should be used. If you are unsure of how to change your riding mowers oil, take it to a professional for an oil change and service.


There will be some minor problems with your mower every now and again but with a little know how you can easily remedy these glitches on your own. For trickier problems with the carburettor and drive belt, you might want to head on down to a professional for help with fixing the problem.