Repair kit for STIHL MS250/MS230/025/023 chainsaws, piston-cylinder unit with 42.5 mm bore

This engine repair kit is specifically designed for STIHL MS250, MS230, and the older 025 and 023 chainsaws. It has a 42.5 mm bore. The kit includes a complete cylinder block and piston, allowing for the complete replacement of the combustion chamber components. It is the ideal solution for addressing serious problems such as scoring, excessive wear, and insufficient compression, which can cause starting problems or loss of power. Further information: Compatible models: STIHL MS250, MS230, and their predecessors 025 and 023 (please check your machine model). Cylinder block specifications: 42.5 mm bore. Scope of delivery: Typically, one cylinder block and piston kit (piston, piston rings, piston pin, and circlip). Product Features: Precise Model and Bore Compatibility: This kit is precisely matched to the 42.5 mm bore, timing, and mounting surface of STIHL MS250/MS230/025/023 series chainsaws, guaranteeing a perfect replacement for original parts. Durable, High-Quality Components: The cylinder block is typically made of nickel-plated or hardened aluminum alloy, which is lightweight and offers excellent heat dissipation. The piston is made of high-strength aluminum alloy, ensuring wear resistance, smooth running, and restored engine performance. Complete Power Restoration: Addresses issues such as starting problems, power loss, and blue smoke caused by scoring in the cylinder wall, worn or stuck piston rings, and piston damage in a single operation. Complete Rebuild Kit: Includes compatible cylinder and piston assemblies—a crucial step in engine rebuilds to restore compression and power. Wide range of compatibility with the Classic series: A complete set that covers several generations of common chainsaw models, thus offering versatile repair and maintenance options.