Replacement Back Plate Screw for FZ70S Engines - YS Engine YSG1047  [YSG1047]

FZ70S rear cover screw overview

This is an RC back plate screw supplied under the YS Engine YSG1047 designation, intended for use with the FZ70S rear plate assembly named in the product title. It serves as a straightforward replacement fastener to re-establish the rear cover mounting.

To install, align the rear cover, start the screw by hand to ensure the thread engages properly, and tighten until the plate sits flush and secure. Do not over-tighten as this can damage threads or distort the plate seating; proper seating reduces the risk of vibration-related loosening during running.

Although small, this screw is necessary for routine maintenance and serviceability, keeping the rear plate fixed and allowing safe access to internal parts when required. Keep a spare in your parts kit for peace of mind.