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Type Vertical cylinder, 4-cycle water-cooled gas engine
Combustion Spark Ignition/Pre-mixed/Stoichiometry
Maximum output 63 kW / 2500 rpm
Displacement 3.3 ltr
ATS Three way catalyst
Bore x Stroke 98 x 110 mm
Emission EPA Tier 2, CARB Tier 4, EU Stage V

More information

This unit benefits from Yanmar’s new Advanced Gas Combustion Technology which offers high efficiency in a compact package. It’s quiet in operation and comfortably meets EPA Tier 2, CARB Tier 4 and EU Stage V emissions standards

These engines were unveiled for the first time at bauma 2019. An important step in fuel diversification of industrial engines. More information can already be found here.



Emission Compliance
EPA Tier 2 / CARB Tier 4 / EU Stage V
Engine Type
Vertical, 4-cycle water-cooled engine
Naturally aspirated
Combustion System
Spark Ignition/Pre-mixed/Stoichiometry
Fuel Type
Three Way Catalyst
Number of Cylinders
Bore x Strokemm98 x 110
Rated Output (WOT*/SAE J1995)kw/min-163/2500
Max. Torque (WOT*/SAE J1995)N-m / min-1264/1200
Overall Length x Width x Heightmm725 x 577 x 796
Weight (Dry)kg240 (w/o ATS) 

*WOT: Wide Open Throttle 

Lots of useful torque available right where it’s needed. The unique proprietary engine control system optimizes the air intake to achieve even greater power and torque than our diesel engines. Careful design has ensured the ideal stoichiometric combustion ratio is achieved to offer peak efficiency.

Designing industrial diesel engines since 1912 has taught us a lot about fitment on the machine, knowledge we’ve applied to our gas engines. Much thought has gone into making this engine as compact as possible without compromising access to maintenance items. What's more the unique air/fuel mixer system offers unrivalled performance which actually exceeds our diesel equivalent.

By perfecting the stoichiometric combustion ratio the ideal blend of fuel and air is achieved, creating an economical yet powerful unit. Over 30 years’ experience of designing gas engines has culminated in a unique intake system which has improved economy by a tenth over existing mixers, without compromising performance. As well as the obvious life-cycle cost benefits, this gives OEMs the option to install a smaller fuel tank without reducing operating hours between refuelling.