How do You repair the seals in the pump cylinder on the Marksman 2004?

To repair the seals in the pump cylinder of a Marksman 2004, first, ensure the pump is disassembled and the cylinder is clean. Remove the old seals carefully using a small tool to avoid damaging the cylinder. Install the new seals, making sure they fit snugly in their grooves, and reassemble the pump. Finally, test the pump to ensure it functions properly without leaks.