Most Common Problems with Cub Cadet LT42 E (Easy Solutions)

The Cub Cadet XT1 LT42E is a battery-powered electric lawn mower that takes advantage of sweeping evolution in the 21st Century. Like other Cub Cadets, this LT 42E is not also out of problems and mechanical issues. Therefore, there is nothing unusual to face problems with your LT42 E Cub Cadet.

Some common Cub Cadet LT42E problems are engine overheating, knocking, failure to start, machines vibrating, etc. More or less, every LT42 E owner experiences these common problems most often. But if you have a firm knowledge about Cub Cadet design and know how to troubleshoot LT42E, you will  be able to easily diagnose the reason behind these problems.

Although some critical Cub Cadet XT1 LT42E problems may require the services of a professional, you can resolve most of the problems of the LT42E by understanding the most common issues and how to fix them. Continue reading to learn more.

What Are the Common Cub Cadet LT 42 E Problems?

Users of the Cub Cadet XT1 LT42E, such as homeowners and property managers, will find it simple to operate. They can quickly adjust the deck height through all 12 settings. Again, the control is well-designed, and the seat is cozy for the driver.

However, as we mentioned earlier, some basic engineering and material component issues have arisen with the Cub Cadet LT42E. So, today we will discuss some common Cub Cadet LT42E Problems with their remedies in this article.

  1. Engine overheating
  2. Engine knocks
  3. The engine doesn’t start
  4. Cub Cadet won’t move
  5. Machine vibrates
  6. Lawn Mower Smokes
  7. Mower Won’t Drive Straight or Steer Correctly

7 Solutions for Cub Cadet LT42E Common Problems:

No matter how well you take care of it, any product with mechanical components will eventually fail. Although the Cub Cadet LT42 E is a popular choice, it is not without its flaws.  

Some issues may require the services of a professional lawn mower or engine mechanic, but you can easily diagnose the reason for almost every problem we have listed above on your own.

Therefore, here we will discuss 7-solutions for Cub Cadet LT42 E common problems that you can try at home before go for a professional fixing.

1. Engine Overheating: Reducing Load from Engine

Cub Cadet LT42E engine can be overheated for many reasons, including engine overload, improper oil viscosity, air inlet plugged fast idle speed or cooling fins, and too low or too high oil.

Therefore, you can fix the engine overheating problem by following the steps that are given below:

  • Step 1: Reduce loads from the engine.
  • Step 2: Clean the clogged components.
  • Step 3: Inspect oil level. If the oil level in the engine is high or too low, then balance the oil level. Poor motor oil viscosity necessitates an oil change.
  • Step 4: Inspect the clearance between the connecting rod and the crankshaft bearing.
  • Step 5: Tweak fast idle speed.

2. Engine knocks: Replace Defective Components

Cub Cadet LT42E engine can be knocked due to stale or bad octane fuel; engine runs at low revs, low oil level, excessive engine load, worn crankshaft and bore cylinder.

Afterward, you can fix the engine knocking problem by following the steps that are given below:

  • Step 1: Use proper fuel.
  • Step 2: Reduce loads.
  • Step 3: Inspect the oil level and add if necessary.
  • Step 4: Tweak the speed if the engine runs at low revs.
  • Step 5: Replace defective components if cylinder bore or rings are worn.
  • Step 6: If you suspect that your engine is overheating due to blocked cooling fins, you should do a thorough inspection.
  • Step 7: Check and tweak the crankshaft end play.
  • Step 8: Examine the crankshaft and camshaft bearings to see whether they are worn.

3. Engine Doesn’t Start: Inspect the Fuel System

LT42 E lawn mower may not start due to reasons like empty fuel tank, lousy fuel, faulty cap, fuel filter, dirty carburetor, blocked fuel line, and loose battery.

Therefore, to resolve the machine’s starting problem, you must first inspect the machine’s fuel system and find out the actual reason that causes the issue. Here are some steps of this starting problem:

  • Step 1. Check the fuel tank whether it is full or empty. If you find the tank empty or the fuel is of bad quality, fill the tank with fresh fuel.
  • Step 2. Inspect the fuel cap, air filter, spark cap, fuel pump, carburetor, and battery connection. If you find any fault in these components, repair or replace them.
  • Step 3. Check the coil, safety switch, and broken recoil and replace the faulty one.

4. Cub Cadet Won’t Move: Replace a Worn or Cracked Pump Belt

Cub Cadet LT 42E sometimes fails to move due to a worn pump belt and arm string, bad tensioner pulley, and wrong position of the release lever. Also, it can occur due to old and hot hydraulic oil or air in the hydraulic system. 

Therefore, to solve this problem, you need to inspect the drive release lever, pump, air spring, tensioner pulley, and hydraulic system. If you find parts of your Cub Cadet broken or in the wrong position, fix that part securely and move your mower at normal speed. 

5. Machine Vibrates: Replace Engine bolts, clutch, and damaged blades 

Usually, Cub Cadet lawn mowers start vibrating due to missing or loose bolts. It can also vibrate for damaged blades and failing clutch also. However, in some cases, worn deck belts, bad bearing, and stones lodged in the mower also vibrate the machine. 

  • To solve this problem, you can do the followings-
  • Secure or replace engine bolts and clutch
  • Replace or balance the mower blades
  • Check and replace damaged bearing and deck belt
  • Inspect the mower deck and remove debris and small particles.

6. Lawn Mower Smokes: Drain a little Engine Oil

LT 42E lawn mower usually creates smoke when oil comes into the cylinder and starts burning off. This burn usually occurs due to the engine’s low oil capacity. However, faulty mechanical parts like- gasket, piston ring, and valve train can also cause mower smoke. 

Therefore, to avoid this situation, drain a little engine oil from the crankcase and replace the air filter if you find it in bad condition. 

However, low engine oil also sometimes causes friction that leads the engine to create extreme heat and smoke. Therefore, in that case, you may need to add oil to the engine at the recommended level. 

Moreover, regarding internal parts problems, you can ask for help from your local lawn mower service professionals. 

7. Mower Won’t Drive Straight or Steer Correctly: Adjust Tire Pressure and Speed Bolts

Sometimes Cub Cadet LT 42 E mower owners discover that their mower doesn’t steer correctly or drive straightly. This problem can occur due to unequal pressure on each side tire or bad dampers. Also, loose or worn steering components change the rotation speed of the mower, causing a jerk to one side when moving forward. 

To solve this problem, you can-

  • Adjust the tire pressure and speed
  • Inspect and replace the steering system’s faulty parts
  • Replace a new damper and


Here are some questions with answers that people frequently ask about the Cub Cadet LT42 lawn mower:

How long does the Cub Cadet LT42 e battery last on a single charge?

The 3000-watt-hour, 56-volt maximum, 60 amp-hour lithium-ion battery in the LT42 E electric lawn mower provides sufficient power to keep your lawn for up to 1 hour and 30 minutes, or up to two acres, on a single charge.

How long does the Cub Cadet LT42E take to recharge a battery?

After you’ve finished mowing, the battery requires roughly 4 hours to recharge completely. Operating lawn mowers with lead-acid batteries, on the other hand, must be charged overnight. This benefits your Cub Cadet LT42 E’s built-in instant rapid charging.

Can I charge the battery of Cub Cadet LT42 e from a regular outlet?

A standard electrical outlet can be used to charge the lithium-ion electric riding lawn mowers from Cub Cadet. The power source must supply the charger with an input of 120V, 6A, and 720W. Never use an AC voltage other than one between 100 and 240 V to power the charger.

What normally occurs if I run out of power while mowing?

A red, flashing warning light on the vehicle controller will tell you when the battery life is getting low (VCM). The blades will instantly cease spinning if this occurs when they are engaged to save energy. This light automatically shuts off when it starts to flash to conserve power.

What maintenance is required for Cub Cadet LT42 e?

Since they don’t need filters, belts, or oil, the Cub Cadet Lithium-ion electric riding lawn mowers are easier to maintain than a conventional gas-powered mower.

As with regular lawn mowers, the blades will still need to be properly cleaned, lubricated, and sharpened. Consult the operator’s manual for a detailed list of servicing and upkeep.

Final Verdict

The LT42 e combines the latest battery technology with Cub Cadet’s renowned power. From the superior quality of the cuts it produces to the ease of use, this is a game-changing mower that will transform how you mow your lawn.

Besides, this Cub Cadet LT42 E is also easy to maintain.  However, We hope this article will prove helpful to you in solving common Cub Cadet LT42E problems. But if these solutions don’t work for your LT42E, you should go for a professional mechanic’s help or automobile service center repair. They will help you out.

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