YS Engine YSG2047 Disc Valve Unit for Nitro Engine Servicing  [YSG2047]

Service part for worn disc valve assemblies

This YS Engine disc valve YSG2047 is supplied as an aftermarket service component for disc-valve induction setups in nitro RC engines. It helps recover correct valve sealing and the intended timing characteristics when the original part shows wear.

For fitment, follow the engine maker's service instructions to access the crankcase, remove the old disc valve, and examine mating faces for scoring or deformation. Fit the new disc valve with proper orientation and tighten retaining hardware to the recommended torque; apply threadlocker or replace gaskets only if the engine maker specifies them.

Replacing a degraded disc valve often restores midrange crispness and steadier idle. After installation allow for a measured break-in and then confirm needle positions and mixture behavior through the throttle range before normal running.