Disc Valve Locating Pin for FZ70S - YS Engine YSG1046  [YSG1046]

Overview: FZ70S disc valve locating pin

This disc valve locating pin is a service replacement designed for RC disc valve systems bearing the FZ70S designation. It secures the disc valve assembly and ensures the valve stays aligned while the engine runs.

Fitment and purpose: Intended for the FZ70S configuration, the pin supports correct seating of the valve disc so that throttle response and engine breathing remain consistent. It is a functional spare part rather than an upgrade to increase power.

Fitting guidance: Remove the engine's required covers to reach the disc valve area, take care when removing the old pin to avoid damaging the disc or housing, and press in the new pin carefully to ensure correct seating. Basic hand tools suffice; keep the area clean during reassembly.

Maintenance advice: Replacing a deformed or worn pin is part of periodic service; a proper pin fit helps maintain repeatable valve timing and avoids sudden changes in throttle behaviour. Check the seating faces and confirm the disc moves freely after the pin is fitted.