YS Engine YSF2187 pump insulator for DZ140 pump assembly  [YSF2187]

Pump insulator for DZ140

This YS Engine YSF2187 pump insulator is an RC-scale replacement part intended to isolate the fuel pump area on DZ140 series glow engines. The component’s purpose is to reduce vibration transfer between the pump and crankcase, helping stabilise fuel delivery and reducing wear on nearby fittings.

Installation is straightforward for hobbyists familiar with engine spares: remove the pump mounting hardware, fit the insulator between pump and mounting flange, and reinstall fasteners to the original torque values. No special tools are required beyond standard RC engine tools and a clean workbench to avoid contaminating the fuel system.

In tuning and maintenance, the insulator plays a focused role — it does not change engine output but helps maintain consistent pump operation under vibration and throttle variation, which supports smoother running and more predictable needle adjustments.