Description
Overview:
The Governor Spring for Villiers MK10, MK12 and C12 engines is a genuine Villiers component designed to regulate engine speed by maintaining correct tension in the governor and throttle linkage. Made from durable metal to withstand repeated flexing, it helps the engine hold a steady RPM under changing loads. Supplied as OEM No. EM921, it is intended for small plant and garden equipment powered by Villiers engines, such as lawn mowers, generators, pumps and site mixers. Suitable for setups operating up to 1,500 RPM, it supports smooth running and helps protect against over-revving. This is unused old stock and may show minor tarnishing or storage dust, but remains fully functional. A straightforward replacement for routine maintenance on MK10 and MK12 engines.
Key Features:
- Genuine Villiers part (OEM No. EM921) for assured fit and compatibility
- Designed for Villiers MK10, MK12 and C12 governor linkages
- Durable metal construction for long service life and repeat cycling
- Helps maintain consistent engine speed and throttle stability under load
- Suitable for systems operating up to 1,500 RPM
- Direct replacement; quick to fit with standard hand tools
- Consistent spring tension supports reliable idle and acceleration response
- Aids smoother running and reduces the risk of over-revving
- Unused old stock; may have light tarnish or dust from storage only
- Practical maintenance item to restore correct governor operation
Typical Applications:
Used in small machinery powered by Villiers engines across construction, grounds care and agriculture. Typical examples include rotary mowers, scarifiers, rotavators, compact generators, cement/site mixers, water pumps and other light industrial plant where stable, controlled RPM is required for safe, efficient operation.
Also known as:
Engine spring, governor coil, engine governor spring, governor tension spring, throttle governor spring, speed control spring, RPM control spring.
Fits Models:
C12, MK10, MK12
Alternate Part Numbers:
EM921
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