Kubota GR2100 Problems

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The Kubota G2100 garden tractor comes with premium features such as a heavy-duty blade design,  hydrostatic transmission, 48-inch cutting deck, “Glide Steer” steering system, 4X4 MFWD 4WD chassis

Despite its ergonomics, fuel efficiency and superb steering design, this garden tractor is not without technical flaws

Some of their problems include transmission problems, steering issues, uneven cuts and clogged discharge chute.

In this article, I reveal 9 common Kubota GR2100 problems and their troubleshooting tips to get the mower working efficiently again.

Kubota GR2100 Problems, Causes, and Possible Solutions

Before I go into details, let’s look at some common Kubota GR2100 problems and their possible solutions:

Problems

Possible Solutions

1. Steering Issue

  • Inspect for low tire pressure and replace when necessary.
  • Contact a lawn mower expert to change the cables of the glide steer.

2. Transmission Problem

  • Remove the oil pump and rebuild it.
  • Replace worn or damaged solenoids.

3. Kubota GR2100 Model Won’t Start

  • Check and replace worn parts
  • Bleed fuel pipes
  • Replace the clogged fuel filter
  • Change damaged or dirty fuel injectors
  • Reinstall or install a new injection pump
  • Open the fuel shut-off valve
  • Change blown fuses
  • Replace the clogged air intake filter with a new one.

4. PTO Problems

  • Replace the control valve

5. Engine Overheating

  • Fill up the oil to the required level
  • Refill to the right level and inspect the system for leaks.
  • Change the faulty components or service the cooling system
  • Replace faulty thermostat
  • Change the belt or adjust the belt tension properly.

6. Uneven Cut

  • Repair or replace the bent or loose mower spindle.
  • Inspect and inflate your tires
  • Sharpen dull blades
  • Install bent or worn blades with a new one.
  • Rebuild or replace the cutting deck
  • Inspect and clean the mower deck.

7. Clogged Discharge Chute

  • Inspect the deck drive belt for correct installation.
  • Make use of a lower mowing height
  • Choose a slower speed
  • Adjust the mower height to a higher cutting height
  • Open the choke fully.

8. Electrical Issues

  • Connect the cables correctly or replace the terminals
  • Recharge the battery.
  • Service the battery or change it.
  • Charge or replace the battery
  • Gap, clean or replace the spark plug
  • Recharge the battery
  • Replace the faulty starter motor or solenoid 
  • Check the wiring harness and connect it as required
  • Install a new battery
  • Replace the terminal clamps
  • Clean or tighten connections.

9. Excessive Vibration

  • Adjust or replace the drive belt.
  • Replace or clean your mower drive pulley.
  • Balance or replace the cutting blades.
  • Tighten the blade bolts as required.

1. Steering Issue

Some Kubota GR2100 owners complained that the mower’s steering was too stiff. Some elderly ones couldn’t operate the mower either.

In this case, the steering may feel maple on one side or can also feel a touch slack. 

Sometimes, the glide steer may appear broken. When you turn it, it may look like the entire rear end is coming off.

Causes

  • Low or flat tires
  • Faulty glide steer

Fix

  • Inspect for low tire pressure and replace when necessary.
  • Contact a lawn mower expert to change the cables of the glide steer.

2. Transmission Problem

Some customers have complained that the mower transmission is problematic, noting issues such as losing brakes and total steering control. This is a result of transmission failure.

Causes

  • Bad transmission oil pump
  • Solenoids for both gears are worn.

Fix

  • Remove the oil pump and rebuild it.
  • Replace worn or damaged solenoids.

3. Kubota GR2100 Model Won’t Start

If your Kubota GR2100 model does not start, it can be caused by a weak or dead battery, corroded or loose battery connections, a misplaced shifter, and air in fuel pipes.

Causes

  • Bad cylinder compression
  • Air in fuel pipes
  • Clogged fuel filter
  • Damaged or dirty fuel injectors
  • Broken fuel injection pump
  • The fuel shut-off valve is closed
  • Blown fuses
  • Clogged air intake filter

Fix

  • Check and replace worn parts
  • Bleed fuel pipes
  • Replace the clogged fuel filter
  • Change damaged or dirty fuel injectors
  • Reinstall or install a new injection pump
  • Open the fuel shut-off valve
  • Change blown fuses
  • Replace the clogged air intake filter with a new one.

4. PTO Problems

There are some complaints by the users that the power take-off feature is not activating the bottom deck.

It can malfunction due to a bad control valve, hindering the functionality and operation of the lawn mower.

Cause

  • Bad control valve

Fix

  • Replace the control valve

5. Engine Overheating

Customers frequently cite overheating as a common problem with the Kubota GR2100 garden tractor. 

You need to check components such as the exhaust system, cooling system, thermostat, and fan belt to fix the issue.

Causes

  • Lack of engine oil
  • Not enough coolant
  • Damaged cooling system parts or dirty system
  • Faulty thermostat
  • Broken fan belt or incorrect belt tension

Fix

  • Fill up the oil to the required level
  • Refill to the right level and inspect the system for leaks.
  • Change the faulty components or service the cooling system
  • Replace faulty thermostat
  • Change the belt or adjust the belt tension properly.

6. Uneven Cut

This is one of the problems of the Kubota garden tractor. Your garden tractor may cut unevenly due to incorrect tire pressure, improper deck level, or bent or worn blades. 

In this case, your mower may leave behind strips of uncut grass between the blades.

Causes

  • Bent or loose mower spindle
  • Incorrect tire pressure
  • Dull blades
  • Bent or worn blades
  • Damaged deck housing
  • Clogged deck

Fix

  • Repair or replace the bent or loose mower spindle.
  • Inspect and inflate your tires
  • Sharpen dull blades
  • Install bent or worn blades with a new one.
  • Rebuild or replace the cutting deck
  • Inspect and clean the mower deck.

7. Clogged Discharge Chute

The grass clippings can accumulate and clog the discharge chute of your Kubota GR2100 garden tractor.

The discharge chute can get plugged due to a high ground speed, low cutting level or mower deck drive belt that is installed incorrectly. 

In this case, this issue can affect the performance of your garden tractor.

Causes

  • The mower deck drive belt was installed incorrectly
  • Tall grass
  • High ground speed
  • The cutting level is low
  • Reduced engine speeds

Fix

  • Inspect the deck drive belt for correct installation.
  • Make use of a lower mowing height
  • Choose a slower speed
  • Adjust the mower height to a higher cutting height
  • Open the choke fully.

8. Electrical Issues

Electrical issues are also one of the common problems of the Kubota GR2100 model. These problems are associated with electrical issues such as:

The Starter That Cranks Slowly

Causes

  • Disconnected cables or corroded battery terminals
  • Low battery capacity
  • The battery won’t hold a charge

Fix

  • Connect the cables correctly or replace the terminals
  • Recharge the battery.
  • Service the battery or change it.

The Starter That Does Not Crank

Causes

  • Worn or drained battery
  • The spark plug is improperly gapped or it is dirty
  • Low battery voltage
  • Faulty starter motor or solenoid
  • The wiring harness is disconnected or not properly connected

Fix

  • Charge or replace the battery
  • Gap, clean or replace the spark plug
  • Recharge the battery
  • Replace the faulty starter motor or solenoid with a new one.
  • Check the wiring harness and connect it as required

Battery That Fails to Charge.

Causes

  • Worn battery
  • Faulty battery terminal clamps
  • Corroded or loose electrical wire connections

Fix

  • Install a new battery
  • Replace the terminal clamps
  • Clean or tighten connections.

9. Excessive Vibration

If your mowing machine vibrates excessively, you need to check important components such as blade bolts, cutting blades, drive belt and mower drive pulley to troubleshoot the issue. \

Causes

  • Damaged or loose drive belt
  • Damaged or clogged mower drive pulley
  • Unbalanced or warped cutting blades
  • Loose blade bolts

Fix

  • Adjust or replace the drive belt.
  • Replace or clean your mower drive pulley.
  • Balance or replace the cutting blades.
  • Tighten the blade bolts as required.

Kubota GR2100 Maintenance Tips

  • Change the engine oil every 100 hours.
  • Replace the engine oil filter every two hundred hours.
  • Check the battery condition every hundred hours.
  • Clean the engine shroud every two hundred hours.
  • Replace the fuel line every two years.
  • Bleed the fuel system when necessary.
  • Change the mower blades when necessary.
  • Replace the fuel filter element every four hundred hours.
  • Change the mower belt when necessary.
  • Replace the gearbox oil seal every two years.

Conclusion

Some of the problems that your Kubota G2100 garden tractor may encounter include PTO problems, electrical issues, transmission problems, steering issues, uneven cuts and clogged discharge chute.

I have outlined the causes of these problems and practical fixes to identify and troubleshoot each of them. 

It is advisable to seek the help of a professional if the problem persists after following the troubleshooting guide shared here.