Troubleshooting Tips for Cub Cadet Lawn Mowers

Troubleshooting Tips for Cub Cadet Lawn Mowers

If you want your Cub Cadet lawn mower to work effectively each time you start it, there are certain maintenance steps to take to ensure your machine is in great condition. Maximize the life of your mower with these troubleshooting tips.

Tip #1 – Keep up with routine maintenance

Stay on top of routine maintenance. This will increase the performance and life span of your Cub Cadet lawn mower. Your lawn mower is most likely the most frequently used piece of outdoor power equipment so perform the proper maintenance to maximize life and efficiency.

Tip #2 – Check spark plugs and carburetors

Clogged air filters, fouled spark plugs, and flooded carburetors are common problems that can affect the starting and performance of your Cub Cadet lawn mower.

Replacing the spark plug can make a huge difference in the performance of your mower. To combat a flooded carburetor, you need to drain the carburetor and put new fuel in it.

Tip #3 – Utilize new fuel and air filters

Fresh fuel and a clean air filter will help prevent lawn mower problems. Use fresh, mid-grade fuel with no higher than E10 Ethanol rating, stored in a clean, sealed container.

To clean your air filter, tap it to remove loose dirt and debris. Hold your filter to the light. If you see the light, the air filter is okay to use. If there is no light, replace the old air filter with a new one.

Tip #4 – Keep a sharp lawn mower blade

Look at the blade on your Cub Cadet lawn mower. Dull lawn mower blades trim grass unevenly and leave the tips of your grass torn and not cleanly sliced.

Tip #5 – Check bolts, wheels, cables and belts

Tighten all bolts on your Cub Cadet lawn mower and check to make sure that the wheels, cables and belts are not overly worn. This can cause problems when mowing.

Use our illustrated parts diagrams to locate any replacement parts you may need for your Cub Cadet lawn mower.

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13 thoughts on “Troubleshooting Tips for Cub Cadet Lawn Mowers

  1. when engine is running 3/4 throttle, engage forward control, engine bogs down like under half throttle. It wont pick up rpm’s. could govenor bed out of adjustment or other problem. has fresh fuel, new plugs….

    • This does sound like a fuel related issue so you’re off to a good start with your trouble shooting of plugs and new fuel. It may need a tune-up. This would consist of either a new carburetor or a carb. rebuild kit. What model mower do you have?

  2. I have a Cub Cadet LT42″ Signature Cut Riding Mower. It seems to have lost alot of power. I replaced the Carb, new plug, Air & Fuel filters, fresh oil and gas. Refilled the trans fluid. New Drive and Deck belts. I am still having this problem after all that. It’s a great mower, can someone help please.

    • Terry our best recommendation is to have someone take a look. Given the amount of trouble shooting you have already put in, we wouldn’t want to offer further advice without someone looking at the machine in person.

  3. I love the mower but the safety switch (engine kill handle) broke twice over the first two seasons of easy use on my flat, manicured lawn.
    I finally made a bypass device out of a coat hanger because I did not want to have to replace the cable every year.

    • That sounds like quite the DIY fix. What is the model of your machine? We would like to look into that issue further for you to provide the best alternative solution.

    • This could be a number of things. The surface you level your deck on is the first key, make sure you are leveling on flat ground, preferably solid surfaces like cement to prevent any kind of sinking or slight variance that surfaces like grass might cause. You also want to make sure you are not just leveling the deck but the actual blades themselves as well. One other potential factor that we check frequently is tire pressure. The pressure in your tires can make all the difference in the cut you get from your machine.

  4. Bought a Cub Ultima ZT2 ….Had mulch kit installed at dealer..Ever since leaves a streaK of cut grass on kit side that is very noticeable…Cleaned under deck ,installed new mulch blades still no difference..Got frustrated pulled kit off….Just 1 piece was all there was…shouldn’t there be more than one piece…..And I wait till 3-4 pm to cut when grass is dry,stills does same thing…Please help….Donnie Mathias 410-430-9734

    • Donald, from what you are describing that sounds like you may not have increased the cut frequency with the mulch kit which is necessary to get the best results. Frequency is important and sometimes, especially in wetter conditions, you may need to double cut. The mulch kit will put the most work on the right blade and when the grass is too long the blade can’t keep up causing clumping. You already know this but wet grass will also clump. We recommend you try cutting more often and try to cut in the driest conditions available. Let us know if this helps even out the spread of your mulch or if we can offer further advice.

  5. trying to start engine with long handle pedal pushed and sitting in seat. Grunt like it turns starter and then stops. turning key again, does same (As it would with low battery). Tried with fully charged jump starter and also jumper cables from running auto. Same problem!!! Checked around and found fuse OK (probably only for lights) and a rectifier. Not sure what retifier does. another guess is seat switch, but wouldn’t get any response to start if that were it. Model LT1050 13AP11CP710 1ED56H10495 5/2006 Good Machine, ut it gets fix or junk it and go see local John Deere agency.

    • Hi John. At first review this sounds like 1 of 2 scenarios. 1) You may not be getting any spark causing the machine to turn over but not start or 2) it could be a fuel/carburetor issue which would allow the tractor to crank but not turn over as well. Try changing the spark plugs and/or the fuel filter and if necessary take it in for diagnostic. If you are in Michigan, Weingartz will pick up the machine and drop it back off for you. We hope these trouble shooting tips help get your machine started.

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