Bobcat 335 Problems: Troubleshooting Tips for Optimal Performance

The bobcat 335 may experience problems such as hydraulic leaks and electrical issues. The bobcat 335 may encounter a few common problems that owners should be aware of.

One potential issue is hydraulic leaks, which can occur due to loose fittings or damaged hoses. These leaks can lead to a loss of hydraulic power and performance. Another problem that may arise is electrical issues, such as a malfunctioning starter motor or faulty wiring.

These issues can prevent the machine from starting or cause intermittent problems with various electrical components. Proper maintenance and regular inspections can help identify and resolve these problems before they escalate.

The Importance Of Proper Troubleshooting For Optimal Performance

Dealing with bobcat 335 problems can be frustrating for owners. However, the key to resolving these issues and ensuring optimal performance lies in the proper troubleshooting process. By following a systematic approach, you can identify and address common issues, leading to a more efficient and reliable bobcat 335.

In this section, we will discuss the significance of troubleshooting and how it can enhance the overall performance of your equipment.

Common Issues Faced By Bobcat 335 Owners

When it comes to the bobcat 335, certain problems tend to arise frequently. These issues can hinder the smooth operation of the equipment and affect productivity. Some common problems faced by bobcat 335 owners include:

  • Engine and starting problems: Difficulty in starting the engine or irregular engine performance is a prevalent issue. It may be caused by fuel system issues, electrical problems, or faulty components.
  • Hydraulic system malfunctions: The hydraulic system is crucial for the functioning of the bobcat 335. Problems such as poor lifting power, hydraulic leaks, or unresponsive controls can significantly impact its performance.
  • Electrical issues: Electrical problems can range from malfunctioning lights and indicators to complete electrical failures. These issues can be caused by damaged wiring, loose connections, or faulty switches.
  • Cooling system troubles: Overheating is a common problem in bobcat 335 machines. It can be a result of a malfunctioning fan, clogged radiator, or low coolant levels. Addressing cooling system issues promptly is crucial to prevent major damages.
  • Track and undercarriage problems: Wear and tear of the tracks and undercarriage components can lead to reduced traction, uneven movement, or track loss. Regular inspection and maintenance can help identify and rectify these issues.

How Troubleshooting Can Lead To Better Performance

Proper troubleshooting not only resolves the issues faced by bobcat 335 owners but also improves the overall performance of the equipment. Here’s how troubleshooting can help:

  • Efficient problem identification: By following a systematic troubleshooting process, you can accurately identify the root cause of the issue. This saves time and resources that would otherwise be wasted on trial and error methods.
  • Preventive maintenance: Regular troubleshooting allows you to detect potential issues before they escalate into major problems. By addressing these minor concerns promptly, you can prevent costly breakdowns and ensure uninterrupted performance.
  • Optimal performance optimization: Troubleshooting helps maintain the bobcat 335 in its prime condition. By addressing issues like engine or hydraulic system malfunctions, you can restore the equipment’s performance to its original capabilities.
  • Enhanced productivity: A properly functioning bobcat 335 enables smooth workflow and increased productivity. Maintaining optimal performance through troubleshooting ensures that projects are completed efficiently and on time.

Troubleshooting is an integral part of maintaining and maximizing the performance of the bobcat 335. By promptly addressing common issues and following a systematic approach, owners can overcome problems and enjoy a more reliable and efficient machine. Regular troubleshooting not only prevents breakdowns but also enhances productivity in various operations.

Ensure optimal performance by prioritizing troubleshooting and addressing any identified issues effectively.

Engine Issues: Diagnosing And Fixing

Signs Of Engine Problems

  • Excessive smoke: If you notice thick black or white smoke coming from the exhaust, it could indicate engine problems.
  • Loss of power: A decrease in engine power can be a sign of issues like fuel or air intake problems.
  • Engine misfires: Frequent engine misfires, where the engine hesitates or stumbles, can signal underlying engine issues.
  • Unusual engine noises: Strange knocking, ticking, or grinding sounds may indicate problems with the engine’s moving parts.
  • Overheating: If the engine temperature gauge consistently shows high readings, it’s likely experiencing cooling system problems.

Troubleshooting Steps For Engine Issues

  • Check fuel quality: Ensure that the fuel you are using is free of contaminants and meets the recommended specifications for your bobcat 335.
  • Inspect air filters: Dirty or clogged air filters can restrict airflow to the engine, resulting in performance issues. Regularly check and clean or replace them.
  • Examine spark plugs: Fouled or worn-out spark plugs can cause engine misfires. Inspect them and replace if necessary.
  • Monitor coolant levels: Low coolant levels can lead to engine overheating. Always check the coolant reservoir and top it up if needed.
  • Scan for error codes: Utilize an obd-ii scanner to pull error codes from the engine control unit (ecu) and identify specific issues.

Common Solutions For Engine Malfunctions

  • Fuel system cleaning: Use a fuel system cleaner to remove deposits from injectors and valves, improving fuel flow and combustion efficiency.
  • Ignition system maintenance: Regularly inspect and clean spark plugs, ignition coils, and cables to ensure proper ignition timing and reliable spark delivery.
  • Cooling system repairs: Addressing issues like leaks or radiator blockages can prevent engine overheating and keep the temperature in check.
  • Air intake system inspection: Remove and clean the air filter, throttle body, and other components to eliminate restrictions and maintain optimal airflow.
  • Regular maintenance: Adhering to the manufacturer’s recommended maintenance schedule, such as oil changes and filter replacements, can prevent engine problems.

By paying attention to these signs, following the troubleshooting steps, and implementing common solutions, you can identify and fix engine issues with your bobcat 335, ensuring smooth operation and reliable performance. Remember, timely maintenance and addressing problems promptly can help you avoid costly repairs and prolong the lifespan of your equipment.

Hydraulic Problems: Identifying And Resolving

If you own a bobcat 335, you may encounter issues with its hydraulic system. These problems can disrupt your workflow and lead to costly downtime. It’s crucial to identify and resolve hydraulic malfunctions promptly to keep your equipment running smoothly.

In this section, we will discuss some common indications of hydraulic problems, offer troubleshooting techniques to help you pinpoint the issue, and provide effective solutions to resolve hydraulic malfunctions.

Indications Of Hydraulic Problems

  • Slow or weak operation: If you notice that your bobcat 335 is operating slower than usual or lacks the strength it once had, it could indicate a hydraulic problem. This could be due to a clogged hydraulic filter, low hydraulic fluid levels, or worn-out hydraulic components.
  • Leaks: Hydraulic leaks can manifest as visible puddles of fluid beneath the equipment or noticeable drops in hydraulic fluid levels. Leaks can occur in hoses, cylinders, fittings, or seals. Ignoring leaks can lead to further damage and potential system failure.
  • Unusual noises: If you hear abnormal sounds like grinding, knocking, or whining while operating the bobcat 335, it may indicate a hydraulic issue. These noises could be caused by aeration of the hydraulic fluid, worn-out components, or cavitation.
  • Erratic movements: When your equipment’s hydraulic system starts to exhibit jerky or unpredictable movements, it’s a sign that something is amiss. This could be due to air in the hydraulic system, a faulty control valve, or damaged hydraulic lines.

Troubleshooting Techniques For Hydraulic Issues

  • Check hydraulic fluid levels: Start troubleshooting by inspecting the hydraulic fluid reservoir. Ensure that the fluid level is within the recommended range. Low fluid levels can lead to inadequate pressure and cause operational problems.
  • Examine hydraulic filters: Clogged or dirty hydraulic filters can restrict the flow of fluid and reduce system performance. Regularly inspect and clean or replace filters as needed.
  • Inspect hoses and fittings: Carefully examine all hydraulic hoses and fittings for signs of damage, wear, or leaks. Tighten loose fittings and replace any damaged hoses to prevent further issues.
  • Remove air from the system: Air in the hydraulic system can cause erratic movements and inefficient operation. Bleeding the system or purging air pockets will restore proper functionality.

Effective Solutions For Hydraulic Malfunctions

  • Fluid replacement: If the hydraulic fluid appears dirty or contaminated, it may be necessary to drain and replace it. Fresh and clean fluid will ensure optimum performance and protect against further damage.
  • Component repairs or replacements: If you identify specific hydraulic components as the source of the problem, such as a faulty control valve or worn-out seals, take the necessary steps to repair or replace them promptly.
  • Professional assistance: If your troubleshooting efforts don’t resolve the hydraulic issue or you’re uncertain about the cause, it’s best to consult a professional technician or authorized bobcat service center. They have the expertise to diagnose and fix complex hydraulic problems.

Remember, regular maintenance and inspection of your bobcat 335’s hydraulic system can help prevent issues before they occur. By promptly addressing any indications of hydraulic problems, utilizing troubleshooting techniques, and implementing effective solutions, you can keep your equipment operating at its best and avoid costly downtime.

Electrical System Failures: Troubleshooting And Remedies

Bobcat 335 Problems: Electrical System Failures: Troubleshooting And Remedies

The electrical system is a crucial component of the bobcat 335, responsible for powering various functions and ensuring smooth operations. However, like any machinery, electrical system failures can occur, leading to frustrating setbacks. In this section, we will discuss the symptoms of electrical system failures, step-by-step troubleshooting, and practical solutions to common electrical problems.

Symptoms Of Electrical System Failures

When facing potential electrical system failures in your bobcat 335, it’s important to recognize the warning signs. Here are some symptoms that may indicate an issue with the electrical system:

  • Flickering lights: If you notice the lights on your bobcat 335 flickering or dimming unexpectedly, it could be a sign of electrical problems.
  • Unresponsive controls: Malfunctioning controls, such as unresponsive switches or buttons, can indicate an electrical issue within the system.
  • Intermittent power loss: Frequent power loss while operating the bobcat 335 is a clear indication of electrical trouble.
  • Blown fuses: Keep an eye out for blown fuses, as this can suggest a problem that needs attention.
  • Strange noises or smells: Unusual noises or burning smells coming from the electrical system are warning signs that something is amiss.

Step-By-Step Troubleshooting For Electrical Issues

When faced with an electrical problem in your bobcat 335, it’s crucial to follow a systematic troubleshooting process to identify and rectify the issue. Here is a step-by-step guide to help you troubleshoot electrical problems:

  • Check the battery: Ensure the battery is charged and properly connected. Corroded terminals or a weak battery can cause electrical issues.
  • Inspect fuses and relays: Examine the fuses and relays related to the electrical system. Replace any blown fuses or faulty relays.
  • Inspect wiring connections: Carefully inspect the wiring connections for loose or damaged wires. Tighten or repair connections as necessary.
  • Test switches and controls: Use a multimeter to test the functionality of switches and controls. Replace any faulty components.
  • Check the alternator: Test the alternator to ensure it is functioning correctly. A faulty alternator can lead to electrical problems.
  • Verify grounds: Check the grounding points in the electrical system to ensure they are secure and free of any corrosion.

Remember to follow safety protocols and consult the bobcat 335 manual for more detailed troubleshooting steps.

Practical Solutions To Common Electrical Problems

Electrical problems in the bobcat 335 can be frustrating, but fortunately, many common issues have practical solutions. Here are some remedies for common electrical problems:

  • Battery maintenance: Regularly clean and inspect the battery terminals to prevent corrosion. Keep the battery charged and replace it when necessary.
  • Fuse and relay replacement: Be proactive in regularly checking and replacing blown fuses or faulty relays.
  • Wiring repairs: Promptly repair any damaged or loose wiring connections to ensure a reliable electrical system.
  • Component replacement: If switches or controls are malfunctioning, consider replacing them with new, reliable ones to restore proper functionality.
  • Alternator maintenance: Regularly inspect and clean the alternator to prevent electrical problems caused by a faulty or inefficient alternator.
  • Grounding maintenance: Ensure all grounding points are clean, secure, and free of corrosion to maintain a solid electrical connection.

By following these practical solutions, you can address common electrical problems in your bobcat 335 and ensure its reliable operation.

Remember, it’s essential to prioritize safety and consult a professional if you are unsure or unable to troubleshoot and resolve electrical system issues on your own.

Tracking And Steering Difficulties: Tips For Improvement

Common Signs Of Tracking And Steering Issues

  • Unstable movements while operating the bobcat 335
  • Difficulty in maneuvering the machine smoothly
  • Uneven or erratic turning motions

Troubleshooting Guidelines For Better Tracking And Steering

Implement these steps to diagnose and address tracking and steering difficulties in your bobcat 335:

  • Check tire pressure: Ensure that the tires are inflated to the correct pressure as recommended by the manufacturer. Improper tire pressure can affect the machine’s stability and maneuverability.
  • Inspect the tracks or tires: Examine the condition of the tracks or tires for any signs of wear, damage, or debris. Damaged or worn-out tracks/tires can lead to tracking and steering problems. Replace or repair them as necessary.
  • Inspect and lubricate the undercarriage components: Regularly inspect and lubricate the undercarriage components such as the rollers, sprockets, and idlers. Lack of lubrication can cause friction, resulting in poor tracking and steering performance.
  • Check the hydraulic system: Inspect the hydraulic fluid levels and ensure they are within the recommended range. Low hydraulic fluid levels can affect the machine’s responsiveness. Additionally, check for any leaks or issues with the hydraulic system and address them promptly.
  • Examine the drive motors: If tracking issues persist, inspect the drive motors for any faults or malfunctions. Ensure that the drive motors are properly aligned and functioning correctly. If necessary, consult a professional for repairs or replacements.

Solutions To Improve Bobcat 335’S Tracking And Steering Performance

Follow these solutions to enhance the tracking and steering capabilities of your bobcat 335:

  • Regular maintenance: Schedule routine maintenance checks to keep the machine in optimal condition. This includes inspecting and servicing the tracks, tires, hydraulic system, and undercarriage. Regular maintenance helps identify and address potential issues before they escalate.
  • Proper operation techniques: To ensure smooth tracking and steering, operate the bobcat 335 with the correct techniques. Avoid sudden and jerky movements, especially during turns. Gradual and controlled maneuvers reduce stress on the machine and improve overall performance.
  • Operator training: Providing proper training to operators can significantly enhance the tracking and steering performance of the bobcat 335. The operators should be well-versed in the machine’s controls, operating procedures, and safety guidelines.
  • Upgrade components: Consider upgrading certain components to enhance the machine’s tracking and steering capabilities. This could include installing high-quality tracks, tires, or improved hydraulic systems.
  • Seek professional assistance: If troubleshooting and regular maintenance do not resolve the tracking and steering issues, consult a professional technician or the bobcat service center. They can provide expert advice, diagnosis, and assistance in resolving any complex problems.

By implementing these troubleshooting guidelines and solutions, you can improve the tracking and steering performance of your bobcat 335, ensuring smoother operation and increased productivity.

Attachments Malfunctions: Troubleshooting And Fixing

Recognizing Attachment-Related Problems

Attachments are essential components of the bobcat 335 excavator, enabling various tasks to be performed efficiently. However, like any mechanical equipment, attachments can malfunction from time to time, causing delays and frustrations. To effectively troubleshoot and fix these issues, it is crucial to first recognize the common attachment-related problems.

Here are some key points to consider:

  • Excessive noise: Unusual noises coming from the attachment can indicate a problem with the hydraulic system, such as a loose connection or a damaged pump.
  • Reduced efficiency: If you notice a decrease in attachment performance, it may be due to a clogged filter, low hydraulic fluid levels, or worn-out components.
  • Hydraulic leaks: Any signs of hydraulic fluid leakage, such as puddles near the attachment or decreased fluid levels, should be addressed immediately to prevent further damage.
  • Attachment not functioning: In cases where the attachment fails to operate, it is essential to inspect the electrical connections, control valves, and switches for any faults or damages.

Step-By-Step Troubleshooting For Attachment Malfunctions

When faced with attachment malfunctions, a systematic approach to troubleshooting can help identify and rectify the issues efficiently. Here is a step-by-step process to follow:

  • Visual inspection: Start by visually inspecting the attachment and its components for any apparent signs of damage or wear.
  • Check hydraulic fluid levels: Ensure that the hydraulic fluid levels are sufficient and meet the manufacturer’s specifications. Low levels can affect the attachment’s performance.
  • Assess electrical connections: Examine the electrical connections to ensure they are secure and undamaged, as loose or faulty connections can disrupt the attachment’s operation.
  • Test control valves: Activate the control valves while observing the attachment’s response. If the valves are not functioning correctly, they may need to be cleaned, repaired, or replaced.
  • Examine switches and sensors: Inspect switches and sensors connected to the attachment, as they play a crucial role in initiating specific functions. Faulty switches or sensors may require troubleshooting or replacement.
  • Inspect hydraulic lines and fittings: Check for any leaks or damaged hydraulic lines and fittings. Replace any faulty components and ensure proper connections and tightness.
  • Test with alternative attachments: Verify if the attachment malfunctions persist with alternative attachments. If the issue is specific to a particular attachment, it may require specific repairs or adjustments.

Effective Solutions To Ensure Proper Operation Of Attachments

To ensure the attachments operate smoothly and efficiently, it is crucial to implement effective solutions. Here are some recommended measures to consider:

  • Regular maintenance: Establish a routine maintenance schedule for the attachments, including inspections, lubrication, and fluid checks. This proactive approach helps identify and prevent problems before they escalate.
  • Adequate operator training: Ensure that operators receive comprehensive training on the proper use and maintenance of attachments. Educated operators can detect early signs of malfunctions and take necessary actions.
  • Prompt repairs: Address any attachment malfunctions promptly to avoid further damage. Engage professional technicians or consult the equipment’s manual for guidance on repairing specific issues.
  • Replacement of worn-out parts: Regularly assess the condition of attachment components and replace any worn-out or damaged parts. This practice optimizes performance and extends the attachment’s lifespan.
  • Regular cleaning: Keep the attachments clean from debris, grease, and other contaminants. Regular cleaning not only improves operation but also reduces the risk of clogs and damages.

By recognizing attachment-related problems, following a step-by-step troubleshooting process, and implementing effective solutions, you can ensure that your bobcat 335 attachments operate optimally. Proactive maintenance and proper care will not only enhance productivity but also extend the lifespan of these valuable excavator components.

Safety Features Problems: Addressing And Preventing

Identifying Safety Feature Issues

When operating a bobcat 335, it is crucial to be aware of any safety feature issues that may arise. By promptly identifying these problems, you can ensure the safety of both yourself and those around you. Here are some key points to consider:

  • Regular inspection: Conduct a thorough inspection of the safety features before each use to identify any visible issues or signs of damage.
  • Warning lights: Pay attention to warning lights on the control panel, as they can indicate potential safety feature malfunctions.
  • Unresponsive controls: If you notice any unresponsive controls or erratic behavior in the safety system, it may be a sign of a problem that needs to be addressed.
  • Strange noises or vibrations: Unusual noises or vibrations during machine operation could suggest an issue with the safety features and should be investigated.

Troubleshooting Techniques For Safety System Malfunctions

When faced with safety system malfunctions on your bobcat 335, it is essential to troubleshoot the issue properly and efficiently. Here are some techniques you can follow to identify and address the problem:

  • Check the connections: Ensure all electrical connections are securely fastened and free from any corrosion or damage.
  • Inspect sensors and mechanisms: Examine the sensors and mechanical components involved in the safety system to identify any faults or signs of wear and tear.
  • Review the wiring: Carefully inspect the wiring of the safety features, looking for any loose or frayed connections that might cause malfunctions.
  • Refer to the manual: Consult the bobcat 335 user manual for troubleshooting guidance specific to your machine’s safety system.

Precautionary Measures For Avoiding Safety Feature Problems

Preventing safety feature problems is always better than dealing with them after they occur. By taking precautionary measures, you can significantly reduce the likelihood of encountering safety issues on your bobcat 335. Here are some steps you can take:

  • Regular maintenance: Follow the manufacturer’s recommended maintenance schedule to keep all safety features in optimal condition.
  • Proper training: Ensure that operators are trained adequately on how to operate the bobcat 335 and its safety features correctly.
  • Safe operating practices: Encourage operators to adhere to safe operating practices, such as avoiding excessive speeds, navigating slopes carefully, and maintaining a safe distance from obstacles.
  • Prompt repairs: Address any safety feature problems promptly by scheduling repairs or seeking assistance from a qualified technician.

Remember that prioritizing safety while operating the bobcat 335 is crucial for both your own well-being and the overall efficiency of your work. By staying vigilant and addressing safety feature issues promptly, you can maximize productivity and minimize the risk of accidents or malfunctions.

The Role Of Troubleshooting In Optimizing Bobcat 335 Performance


When it comes to operating heavy machinery like the bobcat 335, it’s essential to ensure optimal performance. This not only guarantees efficiency but also contributes to improved productivity on job sites. Troubleshooting plays a vital role in achieving these goals by addressing any problems that may arise during operation.

In this section, we will delve into the importance of troubleshooting in optimizing the performance of the bobcat 335 and explore how addressing problems can lead to better efficiency and productivity.

Recap Of The Importance Of Troubleshooting For Optimal Performance:

  • Troubleshooting is the process of identifying and resolving issues that may affect the performance of the bobcat 335.
  • By regularly troubleshooting the machine, operators can identify potential problems before they escalate and cause major disruptions.
  • Regular troubleshooting helps to maintain the bobcat 335 in peak condition and extend its lifespan.
  • It allows operators to address minor issues promptly, preventing them from developing into more significant problems.
  • Troubleshooting ensures that the machine operates at its maximum potential, delivering high-quality output consistently.

How Addressing Problems Leads To Better Efficiency And Productivity:

  • Timely problem-solving improves the overall efficiency of the bobcat 335 by minimizing downtime. When issues are resolved quickly, the machine can be back up and running in no time, contributing to uninterrupted productivity.
  • Addressing problems helps to maintain the machine’s performance at its optimal level. This enables operators to complete tasks more efficiently, saving both time and resources.
  • Ensuring that the bobcat 335 is in excellent working condition reduces the risk of malfunctions during operation, resulting in safer working environments and fewer accidents.
  • By addressing problems proactively, operators can identify areas for improvement and implement necessary adjustments, leading to enhanced productivity and output quality.

Encouraging Readers To Implement The Provided Troubleshooting Tips:

  • If you own or operate a bobcat 335, it’s crucial to prioritize troubleshooting to optimize its performance and get the most out of your investment.
  • Familiarize yourself with the user manual and recommended maintenance procedures for your machine. This will help you understand common issues, troubleshoot effectively, and take preventive measures.
  • Regularly inspect the bobcat 335 for signs of wear and tear, leaks, or unusual noises. Addressing these problems early on can prevent further damage and costly repairs.
  • Stay up-to-date with routine maintenance tasks such as oil changes, filter replacements, and inspections as recommended by the manufacturer.
  • Seek professional assistance whenever necessary, especially for complex issues or technical repairs that require specialized knowledge and skills.

Implementing these troubleshooting tips will not only optimize the performance of your bobcat 335 but also contribute to smoother operations, improved efficiency, and increased productivity. Remember, being proactive in identifying and addressing problems ensures the longevity and reliability of your machine, resulting in a more successful and profitable experience on the job site.

Frequently Asked Questions On Bobcat 335 Problems

Is The Bobcat 335 Prone To Hydraulic Issues?

Yes, the bobcat 335 has been known to have occasional hydraulic issues. Regular maintenance and inspections can help prevent and identify potential problems early on.

What Are Common Problems With The Bobcat 335 Engine?

Some common problems with the bobcat 335 engine include overheating, loss of power, and fuel system issues. Regular servicing and proper maintenance can help minimize these issues and prolong engine lifespan.

How Frequently Does The Bobcat 335 Experience Electrical Faults?

The occurrence of electrical faults on the bobcat 335 can vary. However, it is important to regularly check and maintain the electrical system to prevent any potential faults and ensure smooth operation.

Can The Bobcat 335 Experience Track-Related Problems?

Yes, the bobcat 335 can encounter track-related problems such as track tension, wear, or misalignment. Routine inspection and proper track maintenance can help prevent these issues and keep the machine running smoothly.

What Safety Precautions Should Be Taken When Using The Bobcat 335?

When operating the bobcat 335, it is crucial to follow safety guidelines, including wearing protective gear, avoiding excessive loads, and ensuring proper stability on uneven surfaces. Regular operator training and adherence to safety protocols are essential to prevent accidents.


Overall, it is important to acknowledge that any machinery, including the bobcat 335, can encounter problems over time. This versatile excavator has proven itself in numerous construction and landscaping projects, but it is not immune to wear and tear. From hydraulic leaks to engine issues, owners should be prepared to address occasional malfunctions.

The key to minimizing these problems lies in regular maintenance and routine inspections. By following the manufacturer’s recommended guidelines and seeking professional assistance when needed, operators can keep their bobcat 335 in optimal condition. Remember to take note of any warning signs and promptly address them to prevent further damage.

With proper care, this powerful machine can continue to deliver exceptional results and contribute to the success of your projects. Stay vigilant, be proactive, and enjoy the many benefits the bobcat 335 has to offer.

Leave a Comment