YS Engine YSG1026 Piston Wrist Pin for FZ70S  [YSG1026]

Replacement wrist pin designed for FZ70S

The YS Engine YSG1026 wrist pin is the specified replacement for the FZ70S piston assembly, serving to join the piston and connecting rod in hobby nitro engines. This entry emphasises the mechanical role of the part rather than any performance claims.

Installation guidance: verify the piston and connecting rod surfaces for wear, fit the wrist pin using the correct retention method for your FZ70S assembly, and manually rotate the components to ensure there is no binding once fitted. Work on a tidy bench and employ appropriate small tooling for safety and accuracy.

Maintenance note: the wrist pin is classed as a consumable during rebuilds; replacing it when scoring or abnormal wear appears helps reestablish internal alignment and reduces friction-related problems during operation.