Description
Overview:
The Contact Breaker Tappet is a small but critical ignition component for Villiers MK40 petrol engines. This genuine Villiers part is designed to actuate the contact breaker points at the correct moment, helping to achieve a clean spark and dependable starting. Built from durable metal with a precise profile, it replaces worn or misshapen tappets that can cause weak ignition, misfiring, or poor running. Engineered to OEM specifications for the MK40, it fits correctly within the breaker assembly without modification and supports long service intervals when used with properly maintained points and cam. Suitable for tradespeople, DIY users, and restorers working on garden and light construction machinery powered by Villiers units. MPN: EM857. Genuine Villiers part for assured compatibility and reliability.
Key Features:
- Genuine Villiers replacement for MK40 petrol engines (MPN: EM857)
- Precise actuation of breaker points for consistent ignition timing
- Durable metal construction for long service life in harsh engine environments
- Direct-fit part to OEM specification; no shimming or alteration when used with standard breaker assembly
- Helps restore easy starting and smoother running after ignition wear
- Stable performance under heat and vibration typical of small petrol engines
- Simple to fit with standard hand tools during routine ignition service
- Suitable for preventative maintenance or fault correction on ageing ignition systems
- Supports reliable operation across seasonal and intermittent use
- Clear identification and straightforward replacement within the contact breaker assembly
Typical Applications:
Used in the ignition system of Villiers MK40-powered equipment where accurate breaker point operation is essential. Common on older garden and light construction machines such as mowers, rotavators, small generators, pumps, and compact site machinery. Ideal when refurbishing engines, resolving hard starting, or addressing misfires caused by worn breaker components.
Also known as:
Breaker tappet, ignition tappet, points tappet, contact breaker lifter, points lifter, cam follower for points, breaker actuator, ignition cam follower. These terms refer to the same component that lifts the contact breaker points to open the circuit at the correct moment in the ignition cycle.
Fits Models:
MK40
Product Specifications
| L&S Part No. | EM857 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Villiers |
| OEM No. | EM857 |
| Unit of Sale | 1 |
| Applications | MK40 |
| Machine Type | Engines |
| Fits Brands | Villiers |
| Fits Models | MK40 |
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