YS Engine YSF9166 Regulator Housing Compatible with F91AC  [YSF9166]

YS F91AC Regulator Housing Details

This regulator body is designed to fit the regulator assembly used on YS F91AC glow engines and functions as the housing for regulator internals. It is supplied as a direct-fit spare to recover proper assembly alignment and fitment.

For installation use a bench setup: remove the regulator assembly, transfer seals and fasteners where practical, then confirm alignment and sealing before introducing fuel. Do not modify fasteners or fit the part on non-model engine systems.

Intended for repair and upkeep rather than tuning gains, the YSF9166 is suitable for replacing a damaged regulator body or for keeping as a spare during events to reduce downtime.