Fuzhou Lingli Power LD186FA

The register lists here 2 versions with 4 to 6 kW rated output at a constant 3,600 rpm, from single-cylinders with 78 to 86 mm bore and 62 to 72 mm stroke – the stroke thus stays shorter than the bore on both build sizes, making the engines short-stroke in design. Both versions run direct injection and low-sulphur diesel (300 to 500 ppm) and are certified to Tier 4 (Final or Phase-in), in the EPA power category below 8 kW. Maximum torque ranges from 7.8 to 11.8 Nm, again at 3,600 rpm, with certification covering states outside California.

Engines in this power class mainly drive portable generator sets, water pumps and small construction equipment, where low weight and a simple, low-maintenance build matter more than high output per litre. The 178F/186F format is among the most widely built small-diesel platforms worldwide and forms the basis for engines from numerous Chinese manufacturers that differ in bore, stroke and detail equipment but follow the same basic concept.

When buying used, what counts on these air-cooled single-cylinders is the condition of the cooling fins and fan wheel, the tightness of the injection pump, and the action of the decompression lever where fitted; corrosion on the fuel tank and mounting frame is common on generator sets usually run outdoors. Spare parts for this widely used engine format are available through the general trade for Chinese small diesel engines; no dedicated manufacturer distribution network outside China is known.