YS Engine 50ST Back Plate - YSS1016 Replacement Part  [YSS1016]

Function and service fit

This YS Engine back plate corresponds to spare part reference YSS1016 and is produced as a replacement for the 50ST engine family noted in the model designation. It provides the rear housing that secures mounting points, retains internal parts, and furnishes an access surface for routine disassembly and inspection.

The description emphasises correct fitment and workshop technique rather than claiming specific materials. Fit this plate when removing the engine rear cover during scheduled servicing, inspection, or when replacing aged components. Always confirm the YSS1016 marking matches the part you need before installation.

Workshop guidance: where possible remove the engine from the chassis, follow the factory fastener pattern, and keep gaskets and seals with the plate to prevent loss. Begin threading bolts by hand to ensure correct alignment prior to final torque, and check mating faces for contamination to achieve a reliable seal. Replace any old seals during reassembly to sustain dependable operation.

Maintenance role: the rear plate grants access for internal checks and minor adjustments without altering tuning presets, but clean, square mating surfaces and correct assembly are important to retain the engine's baseline behavior. Store a spare YSS1016 in your parts kit to minimise downtime during trackside maintenance.