Yanmar Engine - LY Series
Introduced in 1992, this is the six cylinder version of the 4LH series. Lightweight, compact with excellent horsepower to weight ration. All models are the same size and weight. Smallest HP in its class.
Race-proven performance with startling power-to-weight capability and low-slung configuration. Extremely popular for repowering petrol-driven engines because of the flat-top, narrow profile of these diesels. The engines benefit further from outstanding fuel economy. This series includes the following engines:
| Engine | HP | Years In Production | Comments |
| 6LY-STE | 350(70) | 1994 - 1996 | Turbo-Intercooled |
| 6LY-UTE | 315 | 1992 - 1996 | Turbo-Intercooled |
| 6LY2-STE | 420 | 1998 - Present | |
| 6LY2A-STE | 420 | March 2001 - September 2001 | US built |
| 6LY2A-STP | 440 | September 2001 - Present | Higher Hp |
| 6LYA-STE | 350 | January 1997 - May 2001 | US built |
| 6LYA-STP | - | ||
| 6LYA-UTE | 315 | January 1997 - December 2001 | US built |