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Yamaha Big Bear 350 Problems: The Truth Behind the Issues
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Introduction Yamaha Big Bear 350 Problems: The Truth Behind the Issues
Yamaha Big Bear 350: Solving Common Problems
The Yamaha Big Bear 350 is a popular ATV known for its versatility and ruggedness. However, like any vehicle, it can encounter issues that may affect its performance and reliability. In this comprehensive guide, we’ll delve into the common problems experienced by Yamaha Big Bear 350 owners and provide detailed solutions to help you keep your ATV running smoothly.
We’ll cover a wide range of issues, from engine problems such as difficulty starting, overheating, and loss of power, to transmission problems like hard shifting, slipping gears, and noisy transmission. Additionally, we’ll address suspension problems, including leaking shocks, sagging suspension, and a rough ride.
Our goal is to empower you with the knowledge and solutions to effectively troubleshoot and resolve these common problems with your Yamaha Big Bear 350. Whether you’re an experienced ATV enthusiast or a novice rider, this guide will provide you with valuable insights and step-by-step instructions to maintain and repair your ATV like a pro.
So, let’s dive into the world of Yamaha Big Bear 350 problems and solutions, ensuring your ATV delivers years of thrilling adventures and reliable performance.
Engine Problems
1. Difficulty Starting
If your Yamaha Big Bear 350 is experiencing difficulty starting, there are several potential causes to consider. We’ll explore common issues such as battery problems, spark plug issues, and fuel system malfunctions, providing step-by-step troubleshooting steps and solutions to get your ATV up and running again.
2. Engine Overheating
Overheating is a serious issue that can lead to extensive damage if left unchecked. In this section, we’ll delve into the causes of overheating, including insufficient coolant, faulty thermostat, and clogged radiator. We’ll guide you through the process of diagnosing and resolving these problems, ensuring your Big Bear 350 stays cool and performs optimally.
3. Loss of Power
If your ATV has lost power or is performing sluggishly, there are several possible culprits. We’ll examine common causes such as a dirty air filter, clogged fuel injector, and worn-out piston rings. Our detailed solutions will help you identify and fix these issues, restoring your Big Bear 350’s power and responsiveness.
Transmission Problems
1. Hard Shifting
Hard shifting can be a frustrating issue that affects the overall riding experience. In this section, we’ll explore common problems related to hard shifting, including low transmission fluid, worn clutch plates, and faulty shift linkage. We’ll provide step-by-step instructions on how to inspect and resolve these issues, ensuring smooth and effortless gear changes.
Yamaha Big Bear 350 Problems: The Truth Behind the Issues

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Engine Problems
1. Difficulty Starting
The Yamaha Big Bear 350 may experience difficulty starting due to several factors. Check the battery for proper voltage and ensure the spark plug is clean and gapped correctly. Inspect the fuel system for leaks or blockages, and clean the carburetor if necessary.
2. Engine Overheating
Overheating can occur due to insufficient coolant, a faulty thermostat, or a clogged radiator. Ensure the coolant level is adequate and replace the thermostat if faulty. Clean the radiator fins to improve airflow and prevent overheating.
3. Loss of Power
Loss of power can be caused by a variety of issues, including a dirty air filter, clogged fuel injector, or worn-out piston rings. Check and clean the air filter regularly, and replace the fuel injector if necessary. If piston rings are worn, consider a top-end rebuild.
Transmission Problems
1. Hard Shifting
Hard shifting can be caused by low transmission fluid, worn clutch plates, or a faulty shift linkage. Inspect the transmission fluid level and add or replace as needed. Replace worn clutch plates and adjust the shift linkage if necessary.
2. Slipping Gears
Slipping gears may indicate worn or damaged transmission components. Check the transmission fluid level and condition. Replace worn gears or bearings as needed, and consider a complete transmission rebuild if necessary.
3. Noisy Transmission
Noisy transmission can be caused by worn gears, bearings, or a faulty transmission chain. Inspect the transmission for worn or damaged components and replace as necessary. Adjust the transmission chain tension and lubricate it regularly to prevent noise.
Suspension Problems
1. Leaking Shocks
Leaking shocks can cause the suspension to become unstable and affect handling. Inspect the shock absorbers for leaks and replace the seals or shock absorbers if necessary.
2. Sagging Suspension
Sagging suspension can occur due to worn shock absorbers or springs. Inspect the shock absorbers and springs for damage or wear and replace as needed. Adjust the suspension preload to achieve proper ride height.
3. Rough Ride
A rough ride can be caused by worn suspension components or improper tire pressure. Check the shock absorbers, springs, and control arms for wear or damage and replace as necessary. Ensure the tires are properly inflated according to the manufacturer’s recommendations.
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Conclusion Yamaha Big Bear 350 Problems: The Truth Behind the Issues
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Conclusion
Yamaha Big Bear 350 owners may encounter various problems related to the engine, transmission, and suspension. Engine issues include difficulty starting, overheating, and loss of power. Transmission problems may manifest as hard shifting, slipping gears, or a noisy transmission. Suspension concerns can include leaking shocks, sagging suspension, and a rough ride.
Regular maintenance, timely repairs, and proper riding techniques are crucial for maintaining the Big Bear 350’s performance and longevity. By addressing any issues promptly and following a proactive maintenance schedule, owners can minimize the likelihood of major problems and keep their ATV running smoothly and safely.
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FAQ: Yamaha Big Bear 350 Problems
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Yamaha Big Bear 350: Problems and Solutions
Engine Problems
-
Difficulty Starting
- Check battery voltage and ensure it is within specifications.
- Inspect spark plug for cleanliness and proper gap.
- Check fuel system for leaks or blockages.
- Clean carburetor if necessary.
-
Engine Overheating
- Ensure coolant level is adequate.
- Replace thermostat if faulty.
- Clean radiator fins to improve airflow.
-
Loss of Power
- Check and clean air filter regularly.
- Replace fuel injector if necessary.
- Consider a top-end rebuild if piston rings are worn.
Transmission Problems
-
Hard Shifting
- Inspect transmission fluid level and add or replace as needed.
- Replace worn clutch plates.
- Adjust shift linkage if necessary.
-
Slipping Gears
- Check transmission fluid level and condition.
- Replace worn gears or bearings as needed.
- Consider a complete transmission rebuild if necessary.
-
Noisy Transmission
- Inspect transmission for worn or damaged components.
- Replace worn gears, bearings, or transmission chain as needed.
- Adjust transmission chain tension and lubricate regularly.
Suspension Problems
-
Leaking Shocks
- Inspect shock absorbers for leaks.
- Replace seals or shock absorbers if necessary.
-
Sagging Suspension
- Inspect shock absorbers and springs for damage or wear.
- Replace worn shock absorbers or springs as needed.
- Adjust suspension preload to achieve proper ride height.
-
Rough Ride
- Check shock absorbers, springs, and control arms for wear or damage.
- Replace worn components as necessary.
- Ensure tires are properly inflated according to manufacturer’s recommendations.
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Yamaha Big Bear 350 Problems: The Truth Behind the Issues
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