Mercury Workshop Service and Repair Manuals

Piston Ring: Specifications

Piston Rings

Width - top ..................................................................................................................................................................  1.17-1.185 mm (0.0460-0.0466 inch)
Width - 2nd ...............................................................................................................................................................  1.197-1.199 mm (0.0471-0.0472 inch)
Width - oil .........................................................................................................................................................................  2.38-2.45 mm (0.093-0.096 inch)
Ring gap (in bore) - top .....................................................................................................................................................  0.16-0.31 mm (0.006-0.012 inch)
Ring gap (in bore) - 2nd ....................................................................................................................................................  0.33-0.48 mm (0.012-0.018 inch)
Ring gap (in bore) - oil ..........................................................................................................................................................  0.2-0.7 mm (0.007-0.027 inch)