Yanmar diesel engine L70N 
6.7 hp 
3/4 inch threaded pump shaft

Yanmar LN series diesel engine operators manual
Yanmar diesel engine
Model L70N
Performance:
4.4 kW (6.0 hp) @ 3600 rpm continuous
4.9 kW (6.7 hp) @ 3600 rpm rated
4.1 kW (5.5 hp) @ 3000 rpm continuous
4.5 kW (6.1 hp) @ 3000 rpm rated
Capacities:
3.3 litre fuel tank
1.05 litre crankcase oil capacity
Recommended engine oil:
SAE 10W30 diesel engine oil
Fuel consumption:
1.15 litres per hour @ 3000 rpm (75% load)
Aprox 2.8 hours run time per 3.3 litre fuel tank
Aprox 39 hours run time per 45 litre fuel tank

Yanmar is a Japanese diesel engine manufacturer with over 100 years of history. 
The company was founded in Japan during 1912 and developed the world's first commercially viable small diesel engine in 1933.
Yanmar celebrated it’s 100th anniversary in 2012. 
The diesel engine has continued as the core business ever since, the key tool in the rationalization and modernization of agriculture, fishing and industry.
In spite of the current economic challenges we all face, Yanmar is excited about the future and is uniquely poised to expand its leadership position not only in our traditional market segments but also in some exciting new, emerging technologies, all built around our state-of-the-art diesel engines.
Quite simply, Yanmar goals are to continue to be a valued partner to the many customer groups and to provide them and their customers with the best possible combination of products and services.