After grinding a valve, what action is necessary to adjust the tappet clearance?

Adjusting tappet clearance after grinding a valve involves considerations related to the clearance between the valve stem and the tappet. When a valve is ground, it gets shorter, which can lead to insufficient clearance between the tappet and the valve stem. To correct this, you have two main options: grinding the end of the tappet stem or grinding the end of the valve stem to restore the proper clearance.

Grinding the end of the tappet stem can make it shorter, which increases the clearance if needed. Similarly, grinding the end of the valve stem can also adjust the overall length, allowing for the necessary clearance adjustments. Therefore, both actions are valid methods for achieving the right tappet clearance after the valve has been ground.

The correct answer encompasses both of these actions, recognizing that either could be employed to ensure proper engine function. Understanding how these adjustments affect engine performance is essential for maintaining optimal operation in outdoor power equipment.