FZ70S Crankshaft Replacement YSG1015 Compatible with FZ70S by YS Engine  [YSG1015]

Service Crankshaft for FZ70S

This item is the spare crankshaft listed as YS Engine YSG1015 for the FZ70S engine line. It provides the rotating mass that converts piston reciprocation into drive output for scale model engines and is provided for maintenance use only.

As a direct replacement component, it renews crank geometry and bearing seating to restore correct timing and reduce internal play when the original shaft is worn or damaged. Supplied as a single part for workshop refurbishment.

Installation follows accepted rebuild practice: carefully dismantle the engine, inspect and, if necessary, refresh bearings and seals, confirm correct rod and crank alignment, and adhere to the maker's torque values. Complete a careful break-in sequence to confirm smooth operation before heavy use.

Install this crankshaft when rebuilding an FZ70S engine and follow standard procedures for bearings and seals to ensure reliable performance.