YS Engine YSG1046 Disc Valve Pin for FZ70S replacement part  [YSG1046]

Disc valve pin for FZ70S

This disc valve pin is a direct replacement accessory intended for RC-scale disc valve systems marked FZ70S. It serves as the locating pin that secures the disc valve assembly and maintains correct valve alignment during operation.

Fitment and role: Designed specifically for use with the FZ70S disc valve configuration, the pin helps keep the valve disc seated and aligned so that throttle response and engine breathing remain consistent. It is a small but functional spare that supports reliable disc valve behavior rather than altering performance on its own.

Installation notes: Remove the engine’s necessary covers to access the disc valve assembly, take care when extracting the old pin to avoid damaging the valve disc or surrounding housing, and insert the replacement with gentle, controlled pressure to ensure proper seating. Use appropriate hand tools and keep fasteners and seals free of debris before reassembly.

Tuning and maintenance: Replacing a worn or bent pin is part of routine upkeep; a correctly seated pin ensures repeatable valve timing and avoids erratic throttle characteristics. Inspect the valve face and seating surfaces when servicing the pin, and confirm free movement of the disc after installation.