O.S. Engine OS28602200 Threaded Stop Screw for GT60 Engines  [OS28602200]

Product insight: crank pin stop screw

This O.S. Engine OS28602200 crank pin stop screw serves as an accessory for GT60 engines in RC models. Its role is to restrict axial movement of the crank pin so the crank assembly stays correctly aligned throughout maintenance and reassembly tasks.

Functionally the item is a threaded stop screw that engages with the crankcase or crank assembly to keep the crank pin from shifting or slipping out while other work is undertaken. Fitting the screw is a brief step in the disassembly and reassembly flow and should follow the engine manufacturer's recommended service routine.

From a workshop perspective, the stop screw is a practical tool: it steadies the crank pin for inspections, bearing swaps, and when positioning the crankshaft prior to final assembly. Treat it as a precision part and verify it is securely seated whenever the engine top-end or bottom-end is opened.