What Is the Valve Clearance Briggs and Stratton?
Briggs and Stratton is a well-known manufacturer of small engines commonly used in lawnmowers, generators, and other outdoor power equipment. The valve clearance is a critical aspect of the engine’s performance and longevity. It refers to the small gap between the valve stem and the rocker arm or lifter when the valve is closed.
The valve clearance plays a vital role in ensuring proper engine operation. If the clearance is too small or too large, it can lead to various issues, including poor engine performance, excessive valve noise, and even engine damage. Therefore, it is essential to maintain the correct valve clearance for optimal engine performance.
To adjust the valve clearance, you will need to remove the valve cover, locate the valves, and measure the clearance using a feeler gauge. If the clearance is not within the recommended specifications, adjustments will be necessary. It’s important to consult the engine’s manual or the manufacturer’s guidelines to determine the correct valve clearance for your specific Briggs and Stratton engine model.
Now, let’s address some frequently asked questions about the valve clearance for Briggs and Stratton engines:
1. Why is valve clearance adjustment necessary?
Valve clearance adjustment ensures proper engine performance, reduces valve noise, and prevents potential engine damage.
2. How often should I check and adjust the valve clearance?
It is recommended to check and adjust the valve clearance annually or after every 100 hours of engine operation, whichever comes first.
3. What tools do I need to adjust the valve clearance?
You will need a feeler gauge, a socket set or wrench, and a screwdriver to remove the valve cover.
4. Can I adjust the valve clearance myself?
Yes, adjusting the valve clearance is a relatively simple task that can be done by a competent DIYer. However, if you are unsure or uncomfortable, it is best to seek professional assistance.
5. What are the signs of incorrect valve clearance?
Signs of incorrect valve clearance include excessive valve noise, poor engine performance, difficulty starting, and reduced power output.
6. What happens if the valve clearance is too small?
If the valve clearance is too small, the valves may not fully close, leading to reduced compression, poor engine performance, and potential engine damage.
7. What happens if the valve clearance is too large?
If the valve clearance is too large, the valves may not open fully, resulting in reduced airflow and poor engine performance.
8. Can I set the valve clearance to zero?
No, setting the valve clearance to zero is not recommended. There should always be a small gap to allow for thermal expansion and proper valve operation.
9. Do I need to adjust the valve clearance for both intake and exhaust valves?
Yes, both the intake and exhaust valves require proper clearance adjustment for optimal engine performance.
10. Are the valve clearance specifications the same for all Briggs and Stratton engines?
No, valve clearance specifications may vary depending on the specific engine model. Always consult the engine’s manual or the manufacturer’s guidelines for the correct specifications.
11. Can incorrect valve clearance cause engine overheating?
While incorrect valve clearance may not directly cause engine overheating, it can lead to poor engine performance, which may indirectly contribute to overheating.
12. What other maintenance should I perform while adjusting the valve clearance?
While adjusting the valve clearance, it is a good idea to inspect the valve springs, rocker arms, and other related components for wear or damage. Additionally, it’s recommended to replace the valve cover gasket to prevent any oil leaks.
In conclusion, maintaining the correct valve clearance is crucial for the optimal performance and longevity of Briggs and Stratton engines. Regularly checking and adjusting the valve clearance, along with other necessary maintenance, ensures a smooth-running engine and extends its lifespan. Always follow the manufacturer’s guidelines and consult the engine’s manual for specific instructions and specifications.