14744-PCX-014 Tappet Adj Screw - Overview. The 14744-PCX-014 Tappet Adj Screw is a precision-engineered component within Honda marine engine systems, specifically designed for adjusting tappet clearance. This part plays a vital role in the valve train system, ensuring proper valve operation, timing, and overall engine performance. It guarantees seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Precisely adjusts tappet clearance to maintain c