O.S. Piston Pin Retainer 81VR-MTower Stock# OSMG7487 • Manufacturer Stock# 28117000
140 RX, FS-120S, and the FT-300 Engines.
These Retainers fit on both sides of the piston to hold
the piston pin in place.
Two Piston Pin Retainers for the O.S. Max 81 VR-M, 108 FSR, 140 RX,
Setting piston pin in place and using needle nose pliers to bend
Approximate diameter: 7mm (8.5mm)