Description
Overview:
The Governor Gear Weight for JAP engines is a genuine JAP part that controls engine speed by acting on the centrifugal governor system. It is designed for classic stationary engines and is a direct replacement for OEM No. 16356. Made from durable steel with a bare metal finish, it is suitable for long service in vintage applications. This weight fits the governor gear to maintain a steady governed speed under varying loads, helping the engine run smoothly and protect against over‐revving. Supplied as vintage, unused old stock, it preserves period-correct specification and appearance and may show light tarnishing from age. Ideal for owners and restorers of JAP 4/3 and JAP 5 engines, as well as other compatible JAP models used in older plant and horticultural machinery.
Key Features:
- Genuine JAP part for authenticity and correct fitment (OEM No. 16356)
- Steel construction for strength and wear resistance in long-term service
- Direct replacement for the original governor weight on the gear assembly
- Helps stabilise idle and running speed under changing load conditions
- Supports smoother throttle response and protects against over‐speeding
- Suitable for vintage stationary engines including JAP 4/3, 5, and 6 models
- New old stock: unused, with possible light tarnish consistent with age
- Maintains original specification for restorations and heritage machinery
Typical Applications:
Used in the restoration and maintenance of classic JAP stationary engines powering small generators, lighting plants, pumps, compressors, cement mixers, and horticultural or garden machinery. Ideal when replacing a worn or missing governor weight to restore consistent governed speed, improve running quality, and keep period engines safe and reliable for shows, light-duty work, or regular heritage use.
Also known as:
Governor flyweight, centrifugal governor weight, speed governor weight, engine governor weight, governor counterweight, governor mass, flyweight for governor gear. These terms refer to the same component within the governor mechanism that uses centrifugal force to regulate engine speed.
Fits Models:
JAP 3, JAP 4, JAP 5, JAP 6
Alternate Part Numbers:
16356
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