Description
Overview:
The Magneto Switch Stop Unit to suit Wico / Wipac CJ Model Magnetos is a small, durable stop control for magneto ignition systems. It provides a safe, positive way to earth the magneto and shut down the engine. This Genuine Wipac part, OEM No. S2142, is engineered for CJ-type magnetos commonly paired with classic JAP single-cylinder engines such as JAP 4/3 and JAP 5. Built with a sturdy metal mounting piece and an insulated contact/terminal, it copes well with vibration and heat found on stationary and mobile equipment. Its compact form factor allows neat positioning on the magneto or nearby engine fittings. Supplied as unused old stock, it may show light tarnish or storage marks but remains fully serviceable. Ideal for maintenance and restoration work where reliable function and correct specification matter.
Key Features:
- Genuine Wipac part for assured quality and correct fit (OEM S2142)
- Purpose-designed for CJ-type magnetos used on many JAP engines
- Provides a reliable earthing action to stop ignition quickly and safely
- Robust construction with insulated contact to withstand regular use
- Compact footprint for tidy installation in tight engine bays
- Simple terminal layout; straightforward to fit with basic hand tools
- Suitable for servicing, repairs, and period-correct restorations
- Unused old stock: cosmetic ageing possible; functionality unaffected
Typical Applications:
Used on classic stationary engines and small plant powered by CJ magnetos, including site mixers, pumps, generators, rotavators, mowers, and similar equipment fitted with JAP engines. Ideal where a definite ignition cut is preferred over throttle-only stopping, improving safety and control during maintenance, tuning, or everyday shutdowns.
Also known as:
Magneto stop switch, magneto kill switch, cut-out switch, earthing switch, grounding switch, magneto shorting switch. These terms describe the same function: safely grounding the magneto primary to stop the engine.
Fits Models:
CJ Type Magneto, JAP 4, JAP 4/3, JAP 5, JAP 6
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