Description
Overview:
The Spring, Regulator (part number 114770-66010) is a steel coil spring used in Yanmar L‐series single‐cylinder diesel engines to maintain stable running speed under varying loads. Built from durable spring steel, it restores precise speed control by keeping steady tension on the engine's regulation linkage. This part is commonly found on compact construction and garden machinery powered by Yanmar engines, including mixers, compactors, generators, and pumps. It is a direct replacement for worn, stretched, or broken originals, ensuring the engine returns to smooth and consistent operation. Designed to match the specification of Yanmar engines such as the L48N5SJ1 and L48N, it offers a straightforward fit and dependable service life when installed as part of routine maintenance or during a governor linkage overhaul.
Key Features:
- Direct replacement for Yanmar P/N 114770-66010 for correct fit and function
- High‐tensile spring steel construction for strength and long service life
- Helps maintain steady engine rpm under load to reduce hunting and surging
- Supports accurate idle and working speed for consistent machine performance
- Simple to install on the regulation linkage with basic hand tools
- Matches original geometry and tension to restore designed engine behaviour
- Suitable for L48 mixer‐spec applications and other L‐series site machinery
- Compatible with listed models to minimise downtime and guesswork
Typical Applications:
Used on site and in the workshop to resolve unstable rpm, poor load response, or fluctuating idle caused by a fatigued or broken spring. Common on cement mixers, plate compactors, water pumps, generators, and other light plant using Yanmar L‐series engines. Ideal during scheduled servicing, linkage rebuilds, or when commissioning replacement engines on small construction or garden machinery.
Also known as:
Governor spring, throttle governor spring, speed control spring, engine speed spring, linkage return spring, mixer‐spec engine spring, control spring for Yanmar L‐series, throttle control spring.
Fits Models:
L40AE-S, L40AES, L48N, L48N-S, L48N5SJ1, L48NS
Alternate Part Numbers:
114770-66010, 114299-66010, 114299 66010, 11429966010, 11477066010
Product Specifications
| L&S Part No. | 114770 66010 |
|---|---|
| Manufacturer | Yanmar |
| OEM No. | 114770-66010 |
| Unit of Sale | 1 |
| Applications | L40AE-S, L40AES, L48N, L48N-S, L48N5SJ1, L48NS |
| Machine Type | Engines |
| Fits Brands | Yanmar |
| Fits Models | L48N-S (Mixer) | L48N | L40AE-S (Mixer) |
