Tappet clearance, also known as valve clearance or valve lash, is the small gap between the top of the valve stem and the rocker arm or camshaft lobe in an internal combustion engine. Proper tappet clearance is crucial for the efficient operation of the engine, ensuring that valves open and close at the correct times without undue stress or wear. ### Importance of Tappet Clearance 1. **Efficient Combustion**: Correct tappet clearance ensures that the intake and exhaust valves open and close at t

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