YOU CAN PUT THIS ROLLER (#9) IN THE SAME CAVETY ON THE CYLINDER AS THE CAM CHAIN IS IN NOW, , ADD THE ALUMINUM WASHER (#17) TO THE SPECIAL PIVOT BOLT (#10) AND THEN LACE IT INTO THE CENTER OF THE ROLLER THROUGH THE CYLINDER LEFT SIDE, THREAD IT IN AND TIGHTEN UNTILL YOU CAN FEEL THE ALUMINUM WASHER START TO MUSH