Description
Overview:
The EM547 Governor Spring is a genuine Villiers part designed to control engine speed on classic Villiers single-cylinder petrol engines. Made from durable spring steel, it works within the governor system to keep RPM steady under changing load, preventing overspeed and hunting. This spring is suitable for engines set to operate over 2,400 RPM, helping maintain smooth, reliable running. It is ideal for vintage machinery powered by Villiers units, including lawn mowers, rotavators, generators, and pumps. Supplied as unused old stock, it may show minor tarnishing without affecting performance. Purpose-built for correct tension and response in high-RPM conditions, it offers a precise fit and dependable service for the Villiers MK10 and MK12, as well as other compatible models listed below. Genuine Villiers component for assured compatibility.
Key Features:
- Genuine Villiers EM547 governor spring for assured fit and function
- Designed for engines operating over 2,400 RPM for stable speed control
- High-tensile spring steel for durability and long service life
- Helps prevent overspeeding and surging under varying loads
- Supports smooth idle and consistent running across the rev range
- Unused old stock; may have cosmetic tarnish without impacting performance
- Suited to classic stationary and garden machinery using Villiers engines
- Straightforward replacement during service or rebuild with standard tools
- Correct rate and form for the specified governor linkage on listed models
- Reliable performance in demanding, high-RPM environments
Typical Applications:
Used to restore or maintain accurate speed control in Villiers-powered machinery such as classic lawn mowers, rotavators/tillers, compact generators, water pumps, and light construction equipment. Ideal when addressing hunting, unstable idle, or lost governor tension during routine service or full engine rebuilds on compatible Villiers engines.
Also known as:
Governor spring, speed control spring, throttle governor spring, RPM control spring, engine governor coil spring, governor tension spring, governor return spring.
Fits Models:
C12, MK10, MK12, MK15
Alternate Part Numbers:
EM547
