crf50 valve clearance

As a website operator, I am always on the lookout for new topics to cover and new ways to engage with my audience. One area that has garnered significant interest in recent months is CRF50 Valve Clearance – a subject that has become increasingly popular among bike enthusiasts. In this article, we will take a closer look at what CRF50 Valve Clearance is, why it is important, and how riders can maintain their bikes to ensure they get the most from this powerful machine.

What is CRF50 Valve Clearance?

Simply put, valve clearance is the gap between the cam lobe and the valve bucket. This gap is crucial because it allows the valve to open and close when it needs to. If this gap is too small, then the valves will not close completely, which can cause a loss of compression and reduced performance. On the other hand, if the gap is too large, then the valve will not open enough, which can cause engine damage and reduced power output.

Why is Valve Clearance Important?

Valve clearance is important because it affects engine performance and longevity. If the gap is incorrect, then the engine may not produce as much power as it should, and it may also suffer from increased wear and tear. Additionally, if the gap is too small, then there is a risk of engine damage due to the valves not closing completely. All in all, maintaining the correct valve clearance is critical if you want to get the most out of your CRF50.

How to Maintain Your Valve Clearance

While it may sound complicated, maintaining your valve clearance is actually quite straightforward. Here are the steps you need to follow:

1. Remove the valve cover – Before you can check your valve clearance, you need to remove the valve cover.

2. Set the engine to TDC – This stands for Top Dead Center and refers to the position of the piston. Set your engine to TDC by aligning the TDC mark on the crankcase with the mark on the flywheel.

3. Check the valve clearance – With the engine set to TDC, use a feeler gauge to measure the gap between the cam lobe and the valve bucket. The correct clearance for the inlet valve is 0.08-0.10mm, and for the exhaust valve, it is 0.09-0.11mm.

4. Adjust the clearance – If the gap is too small or too large, then you will need to adjust the clearance. This involves loosening the lock nut and turning the adjuster until the correct clearance is achieved.

5. Reassemble – Once you have checked and adjusted the clearance, it’s time to put everything back together. Make sure you torque all bolts and nuts to the correct setting.


In conclusion, CRF50 Valve Clearance is a vital aspect of bike maintenance that all riders should be aware of. Maintaining the correct clearance is essential if you want your engine to perform at its best and have a long service life. By following the steps outlined in this article, you can check and adjust your valve clearance in a few simple steps – ensuring you get the most from your CRF50.


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