KG178F 5.5HP single-cylinder 4-stroke air-cooled diesel engine

Product Overview

The KG178F is 5.5HP single-cylinder, vertical, 4-stroke, air-cooled diesel engine with direct injection. It delivers 4.0kW maximum and 3.8kW rated at 3600rpm from 296cc of displacement, with a 78X62mm bore x stroke. The fuel tank holds 3.5L and the oil sump 1.1L; net weight is 33kg, measuring .

Key Features

• 4.0kW maximum / 3.8kW rated: the KG178F is a single-cylinder, vertical, 4-stroke, air-cooled direct-injection diesel engine rated at 3600rpm, sized for generators, water pumps and small machinery in the 5.5HP class.
• 78X62mm bore x stroke in 296cc: the short-stroke layout favours high speed and low fuel consumption, which is what makes this displacement usable at full rated load.
• 3.5L fuel tank at 295g/kw.h: electric start as standard, so refills are less frequent on remote or unattended installations.
• 1.1L oil capacity, 33kg net weight, : direct injection, air cooling and no separate radiator mean one compact unit to install and service.

Applications

The KG178F is supplied to generator assemblers, water pump and irrigation pump builders, and agricultural and construction machinery manufacturers who need a 5.5HP air-cooled diesel engine as a power unit. For trading companies, distributors and project buyers, KG178F is an economical factory-backed option with steady supply and consistent quality.

Why Choose KIGERPOWER

KIGERPOWER (Ningde Kinger Electrical Machinery Co., Ltd.) has manufactured generators, engines and water pumps in Ningde, Fujian since 2006. Products are exported to 80+ countries and regions, backed by CE, SONCAP and ISO 9001 certification. Every unit is tested before shipment, and OEM/ODM programs are available with custom colors, branding, voltage and frequency settings. With factory-direct pricing and responsive after-sales support, KIGERPOWER is a reliable partner for distributors, dealers and end customers worldwide.

Learn more about our 12,000m² factory, 100% pre-shipment load testing, and international certifications on our About Us page.

FAQ

What output does the KG178F deliver?

Maximum output is 4.0kW and rated output is 3.8kW, both measured at 3600rpm. Rated output is the figure to size a generator or pump against; maximum output covers short peaks such as starting current. Buy on the rated figure.

Which engine is fitted and what does it displace?

The KG178F is a single-cylinder, vertical, 4-stroke, air-cooled engine with 78X62mm bore x stroke and 296cc of displacement, using direct injection.

How is it started, and how often does it need servicing?

Starting is by recoil or electric. The oil sump holds 1.1L and the fuel tank 3.5L. Air cooling means there is no radiator to service, but the air filter and oil change intervals still apply — ask us for the maintenance schedule for your duty cycle.

What fuel does it run on, and how much does it burn?

Light diesel oil, #0 or #10. Fuel consumption is rated at 295g/kw.h. Running an electrical or a mechanical governor with matched injection will keep actual consumption close to that figure under rated load.

What are the dimensions and shipping weight?

The bare engine measures and weighs 33kg net. Pallet and container dimensions are available on request.

Representative photo of the small-bore diesel engine range (KG173F shown). Full specification sheet and current pricing on request.