John Deere X758 Problems

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The John Deere X758 model is a part of the John Deere X700 series lawn tractors. Several small-scale farmers are delighted with its reliable mowing deck, newly designed seat, and sturdy exterior design.

Like every John Deere lawn tractor, it is not without issues. There are some common problems you might be dealing with.

In this article, I outline 7 John Deere X758 problems, their causes, and possible solutions to help you identify and troubleshoot each problem.

John Deere X758 Problems, Causes, and Possible Solutions

Before I go into details, let’s look at some common John Deere X758 problems and their possible solutions:

Problems

Possible Solutions

1. Engine Problems

  • Check and repair the fuel injection pump
  • Replace the fuel filter
  • Press the brake pedal.
  • Remove debris and dirt from the fuel system
  • Drain gas and fill with a fresh one
  • Check and replace damaged connections.
  • Clean the cooling fins
  • Clean or replace the air filter.
  • Loads should be reduced.
  • Change the engine oil

2. John Deere X758 Electrical System Problems

  • Change the battery.
  • Clean or change the cable.
  • Replace the blown fuse with a new one
  • Replace the starter with a new one
  • Charge the battery
  • Change the wiring
  • Clean battery contacts

3. Deck Issues

  • Open the throttle widely
  • Don’t mow wet grass.
  • Change the cutting height
  • Check and inflate the tires.
  • Check and adjust the deck height.
  • Replace the damaged blades

4. Belt Problem

  • Clean the pulley.
  • Install a new belt.
  • Ensure that you adjust the belt tension

5. John Deere X758 Mechanical Problems

  • Release the parking brake
  • Tighten the blades
  • Disengage the bypass valve lever
  • Install a new traction drive belt
  • Replace the bent blades 
  • Clean the sheaves.

6. Transmission Problems

  • Replace the worn-out gear solenoids 
  • Purge the transmission system.
  • Consult a John Deere dealer to solve the issue.

7. Steering Problems

  • Replace the punctured actuators
  • Change worn-out bushings
  • Replace loose bolts.

1. Engine Problems

The engine problems of your lawn tractor include engine overheating, engine running roughly and starting problems

Yanmar Diesel Engine Starting Problems

If you have issues starting your lawn tractor, you need to check important parts such as the fuel filter, fuel system and brake pedal to troubleshoot the issue.

Causes

  • Dysfunctional fuel injection pump
  • Clogged fuel filter
  • The brake pedal is not depressed
  • Dirt and debris in the fuel system
  • Stale fuel

Fix

  • Check and repair the fuel injection pump
  • Replace the fuel filter
  • Press the brake pedal.
  • Remove debris and dirt from the fuel system
  • Drain gas and fill with a fresh one

Engine Runs Roughly

If your engine sputters, struggles for energy or misfires, it is an indication that the engine is running roughly.

This issue may arise due to clogged cooling fins, clogged air filter or damaged electrical contacts,

Causes

  • Damaged electrical contacts
  • Clogged cooling fins
  • Clogged air filter

Fix

  • Check and replace damaged connections.
  • Clean the cooling fins
  • Clean or replace the air filter.

Engine Overheating

Some users complained that the engine of the John Deere X758 overheats, This can be a result of excessive load, poor-quality engine oil or clogged cooling fins.

Causes

  • Excessive engine load
  • Poor-quality oil
  • Plugged cooling fins
  • Oil level is too low or too high

Fix

  • Loads should be reduced.
  • Change the engine oil
  • Clean the cooling fins.

2. John Deere X758 Electrical System Problems

The John Deere lawn tractor can also malfunction due to electrical system problems. Some electrical problems can also cause the engine not to work well. 

For instance, a blown fuse may cause the engine not to start. Here is an overview of John Deere X758 electrical system problems:

The Battery Will Not Charge

The battery of your lawn tractor may fail to charge due to dead battery cells or dirty cables and battery terminals.

Causes

  • Battery cells fail
  • Dirty battery terminals and cables

Fix

  • Change the battery.
  • Clean or change the cable.

Starter Will Not Turn the Engine

If the starter does not turn the engine, ensure that you examine electrical components such as battery contacts, fuse and the starter

Causes

  • Blown main fuse
  • Damaged starter
  • Low battery voltage
  • Damaged electrical wires
  • Corroded battery contacts

Fix

  • Replace the blown fuse with a new one
  • Replace the starter with a new one
  • Charge the battery
  • Change the wiring
  • Clean battery contacts

3. Deck Issues

Several problems can occur around the mower deck of the John Deere lawn tractor, Some of them include uneven cuts or clogged discharge chute

Clogged Discharge Chute

The discharge chute of your lawn tractor may get blocked due to debris, dirt, and grass clippings in the discharge system. 

This will restrict airflow and cause the lawn tractor not to discharge grass clippings properly.

Causes

  • Low engine speeds
  • Wet grass
  • Low cutting height

Fix

  • Open the throttle widely
  • Avoid mowing wet grass.
  • Change the cutting height

Uneven Cut

The lawn tractor may cut unevenly due to an unleveled mower deck, worn blades or insufficient tire pressure. This can make the lawn look untidy and unattractive.

Causes

  • Insufficient tire pressure
  • Unleveled mower deck
  • Worn mower blades

Fix

  • Check and inflate the tires.
  • Check and adjust the deck height.
  • Replace the damaged blades with new ones.

4. Belt Problem

A mower belt that is not too tight, loose, or well-installed will ensure a remarkable mowing performance. If it slips, it can affect the performance and functionality of the lawn tractor.

Causes

  • Debris in the sheaves
  • Loose belt
  • Belt tension issues

Fix

  • Clean the pulley.
  • Install a new belt.
  • Ensure that you adjust the belt tension

5. John Deere X758 Mechanical Problems

The John Deere X758 lawn tractor may develop mechanical problems such as abnormal vibrations or mobility issues. Here is an overview of John Deere X758’s mechanical problems:

The Engine Is Running but the Lawn Tractor Is Not Moving

If the lawn tractor engine runs but the tractor fails to move, you need to check the parking brake, blades or transmission oil to fix the problem.

Causes

  • The parking brake is locked
  • Loose blades
  • The bypass lever is on

Fix

  • Release the parking brake
  • Tighten the blades
  • Disengage the bypass valve lever

Vibration Problems

The lawn tractor may vibrate abnormally due to defective components such as a worn traction drive belt, bent blades, or dysfunctional sheaves.

Causes

  • Worn traction drive belt
  • Bent blades
  • Dysfunctional sheaves

Fix

  • Install a new traction drive belt
  • Replace the bent blades with new ones.
  • Clean the sheaves.

6. Transmission Problems

This is one of the common problems of the John Deere X758 model. A user complained about strange noises and vibrations coming out from the lawn tractor while moving it.

Other likely causes of transmission problems include worn-out gear solenoids or cavitation.

Causes

  • Worn-out gear solenoids
  • Cavitation
  • Gear-related issues

Fix

  • Replace the worn-out gear solenoids with new ones.
  • Purge the transmission system.
  • Consult a John Deere dealer to solve the issue.

7. Steering Problems

You may face steering problems while operating the lawn tractor. If the actuator is punctured, the steering may fail to function properly.

Furthermore, your steering may become difficult to steer due to loose bolts or worn bushings.  

Causes

  • Punctured actuators
  • Worn bushings
  • Loose bolts

Fix

  • Replace the punctured actuators with new ones
  • Change worn-out bushings
  • Replace loose bolts.

What Majority of the Users Feel About John Deere X758 Lawn Tractor

Although some users love the lawn tractor for its ease of use, superb cuts, 4-wheel drive feature, power and stability, some homeowners also lodged complaints about it.

Some users complained that the tractor is loud. Furthermore, it might be a bit difficult to properly position the quick connect mower deck.

A user commented that the four-wheel drive is excellent and stable while snow blowing but the cab is almost impossible to keep warm below 20 degrees.

Another user also complained that the law tractor is a bit pricey.

Frequently Asked Questions 

How much does a John Deere X758 cost?

A: The cost of the John Deere X758 is around $18,000

How much does a John Deere X758 weigh?

A: It weighs 1038 lbs

What engine is in a John Deere X758?

A: The lawn tractor runs on a 24-hp Yanmar 3-cylinder diesel engine.

Conclusion

Some of the problems that you might face while operating the John Deere X758 lawn tractor include engine problems, transmission problems, mechanical problems and steering issues.

Follow our troubleshooting guide to identify and fix the problems of the lawn tractor. It is advisable to consult a professional if the problem persists.