Tackling Common Hisun Sector 750 Problems | Quick Fixes

The Hisun Sector 750 is a utility terrain vehicle that offers a budget-friendly option for outdoor enthusiasts and workers. The UTV boasts an engine that packs plenty of power for any challenge you throw its way. However, while it provides a range of features and utility at an attractive price point, it is not without its flaws. In this blog post, we’ll discuss some of the common issues that users should keep in mind.

Key Takeaways

  • The Hisun Sector 750 his susceptible to various performance and reliability issues that users frequently encounter, leading to an inconsistent driving experience.
  • Due to recurring problems, the Hisun Sector 750 often requires more frequent maintenance and part replacements.
  • Overall build quality and durability are common concerns, with users reporting premature wear of parts and vulnerability to environmental factors.

Common Hisun Sector 750 Problems

Cooling System Design Flaws

The cooling system is often cited as a primary concern among Hisun Sector 750 users. The cooling system is often criticized for not managing the engine heat effectively, leading to frequent overheating. This is often attributed to radiator design and placement which is not optimal for efficient airflow, especially in hot and dusty conditions.

Riders have also noted that the fan motor and blades are prone to wear and may need regular replacement. Luckily, upgrading to a high-capacity, aluminum radiator can help enhance cooling performance. Additionally, you can always install a more powerful electric fan with a higher CFM rating to improve airflow through the radiator.

Tackling Common Hisun Sector 750 Problems

Drive Belt Issues

The drive belt in the Hisun Sector 750 has been a common source of frustration. For instance, the belt tends to wear out faster than expected, especially under heavy use. Most users have reported that the belt materials are not robust enough to handle the strain of regular off-road driving.

Belt slippage is also a frequent issue, especially when the vehicle is climbing or under a heavy load. This can lead to a loss of power and damage to the belt and pulleys. The best way around this is to upgrade to a heavy-duty, high-performance belt specifically engineered for UTV applications. These belts are crafted from more durable materials capable of enduring rugged conditions.

Transmission Problems

Another common Hisun Sector 750 issue is related to its transmission. Many riders have reported that the transmission case is prone to cracking, especially when the vehicle is used on rough terrain. This can lead to oil leaks and transmission failures. Luckily, you can avoid this by reinforcing the transmission case with protective skid plates or aftermarket reinforcements to absorb impacts and reduce the risk of cracking.

The transmission system has also attracted complaints regarding difficulty in shifting gears. This might be due to worn-out clutch components, low transmission fluid levels, or issues with the gear selector mechanism. Riders may also experience the vehicle slipping out of gear while in motion, which can be attributed to transmission wear or internal component failures.

Ensure clutch components are not worn and replaced if necessary. Furthermore, implement a regular maintenance schedule for the transmission system, including fluid checks, gear inspection, and lubrication. This will help prevent premature wear and ensure optimal performance over time.

Electrical System Failures

The electrical system is another area where Sector 750 tends to fall short. Riders have frequently reported issues with poor electrical grounding, which leads to intermittent power losses and faulty electrical connections.

The wiring harness is also prone to wear and damage due to its placement and lack of protective shielding. The battery also tends to drain quickly, even when the UTV is not in use. This is often attributed to parasitic electrical draws from components that remain active when the vehicle is off.

Start by enhancing electrical grounding by cleaning the connections thoroughly and ensuring solid contact with bare metal surfaces using dielectric grease or corrosion inhibitors. You may also want to combat parasitic draws by identifying and disconnecting components that contribute to battery drain when the UTV is inactive.

Equally important, consider installing a battery disconnect switch or trickle charger to maintain battery health during prolonged storage periods.

Suspension and Handling Issues

The suspension and handling capabilities of the Hisun Sector 750 have been criticized for their inability to absorb shocks well, leading to a bumpy and uncomfortable ride. This could be due to inadequate suspension design or wear and tear of the components. Problems with steering, such as stiffness or poor response, have also been noted.

These issues may arise from faulty steering racks, worn-out ball joints, or alignment problems. To improve these aspects, upgrade the suspension components with high-performance, adjustable shocks designed for off-road conditions. Additionally, inspect and replace worn steering components such as ball joints and tie rod ends to improve steering responsiveness and eliminate stiffness.

Build Quality and Durability Concerns

Last but not least, owners have raised concerns about the overall build quality and durability of the Hisun Sector 750. Parts such as bushings, bearings, and seals tend to wear out faster than expected, leading to frequent replacements and repairs. Exposed metal components are also prone to rust and corrosion, especially if the vehicle is used in harsh environments or not stored properly. Always prioritize upgrading to high-quality aftermarket parts for durability and resistance to wear and corrosion.

Hisun 750 UTV Reviews

User Experiences

Reviews of the Hisun Sector 750 reflect a mixed user experience. On the positive side, users appreciate UTV’s affordability and the range of features it offers at a lower price point. These features include a decent payload capacity, a robust 735cc engine, and a spacious cargo bed.

However, negative reviews highlight the issues mentioned above. Users often express frustration over the frequent mechanical problems and the need for constant maintenance. Some reviews suggest that while the Hisun Sector 750 may be a cost-effective option initially, the ongoing maintenance and repair costs can offset the initial savings.

Performance and Reliability

Performance-wise, the Hisun Sector 750 offers satisfactory power and handling for light to moderate off-road use. However, reliability concerns due to the reported problems can affect user confidence in the vehicle’s long-term performance. For users who require a UTV for heavy-duty tasks or extended use in challenging conditions, the Hisun Sector 750 may fall short of expectations.

Hisun Sector 750 Replacement Engine

When to Consider a Replacement

For users experiencing chronic engine issues that cannot be resolved through routine maintenance, a replacement engine may be a viable solution. Key indicators for considering an engine replacement include;

  • Persistent overheating problems that lead to engine damage.
  • Severe power loss that affects the vehicle’s functionality.
  • Continuous starting issues despite replacing batteries and other components.

Replacement Engine Options

The Hisun Sector 750 is equipped with a 735cc, single-cylinder, 4-stroke engine. When looking for a replacement, you can opt for either OEM engines or aftermarket alternatives. OEM engines are typically designed to meet the original specifications and quality standards, while aftermarket options may offer enhanced performance or durability features.

When selecting a replacement engine, it is crucial to;

  • Research and choose a reputable supplier.
  • Consider warranty options and customer reviews.
  • Ensure compatibility with the existing vehicle components.

Installing a replacement engine requires technical expertise and should ideally be performed by a professional mechanic. Regular maintenance, such as oil changes, air filter replacements, and cooling system checks, is also essential to prolong the life of the new engine and prevent future problems.


What is the top speed of the Hisun Sector 750?

The top speed of the Hisun Sector 750 is approximately 45 mph (72 km/h). This speed is quite respectable for off-road vehicles of its type. However, the top speed can vary based on factors, such as load, terrain, and the vehicle’s condition.

What engine is in a Hisun Sector 750?

The Hisun Sector 750 is powered by a 735cc, single-cylinder, 4-stroke engine. This engine is designed to provide a balance of power and fuel efficiency, suitable for a range of utility and recreational applications.

How much does a Hisun Sector 750 cost?

A new Hisun Sector costs $11,999 MSRP though additional charges such as destination fees, taxes, license fees, and dealer preparation fees may apply. Used models are available at lower prices, with costs varying based on condition, mileage, and age.

Parting Shot!

The Hisun Sector 750 promises power, reliability, and adventure whether you’re tackling tough terrain or enjoying a leisurely ride. However, it’s essential to stay informed about the potential challenges that can arise while using the vehicle. For current owners facing persistent issues, it is always a good idea to consider a replacement engine and maintain regular vehicle upkeep to enhance performance and extend the lifespan of the UTV.

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