Yamaha MZ360 8.4hp Engines
|Model Name||MZ360||MZ360 Reduction Type|
|Bore x Stroke||85 x 63 mm||85 x 63 mm|
|Displacement||357 cc||357 cc|
|Max Power (Net)*||7.6 kW (10.2 hp) @ 3600 rpm||7.6 kW (10.2 hp) @ 1800 rpm|
|Rated Power (Net)*||6.3 kW (8.4 hp) @ 3600 rpm||6.3 kW (8.4 hp) @ 1800 rpm|
|Max Torque (Net)*||23.9 Nm (17.6 ft-lbf) @ 2400 rpm||47.8 Nm (35.3 ft-lbf) @ 2400 rpm|
|Fuel||Unleaded Gasoline||Unleaded Gasoline|
|Fuel Tank Capacity||6.1 L (1.61 gal)||6.1 L (1.61 gal)|
|Spark Plug||NGK BPR4ES||NGK BPR4ES|
|Lubrication System||Mechanical Splashing||Mechanical Splashing|
|Oil Capacity||1.1 L (1.2 qt)||1.1 L (1.2 qt)|
|Dry Weight||33Kg (73.8 lb)||36Kg (79.4 lb)|
|Dimensions (L**xWxH)||424.5 x 451 x 481 mm||450 x 451 x 481 mm|
** Length dimension with Type A PTO.
*** Fuel consumption estimates are based on Yamaha testing of a production engine with the factory installed air cleaner and muffler. Actual fuel consumption will vary due to the same factors that can affect engine power as well as the operating speed in the application and other variables.
MZ360 PTO A Type
MZ360 Reduction Type
Dimensions (Mounting Face)
|AIR CLEANER||INTAKE MANIFOLD||SPARK PLUG|
Clean PTO Face
The clean PTO mounting face ensures customers experience minimal interference from exhaust components for easier installation to their machinery than with some competitive engines.
Variety of PTO Shaft and Mounting Face Options
Silent Semidry Air Filter Types**
Best suited for low dust conditions.
- Water Pumps
- Pressure Washers
- Air Compressors (General Use)
Paper Element + Foam Pre-Filter Types*
Best suited for all dust conditions.
- Air Compressors (Construction)
- Harvesting Machines
- Reel Mowers
- Wheeled Blowers
- Concrete Saws
Intake mixture flow is optimized by utilizing a swirl effect that creates a uniform fuel/air mixture throughout the combustion chamber. This increases the speed of combustion throughout the cylinder, increasing power while decreasing fuel consumption and exhaust emissions.
Equipped with an industry-standard "BPR4ES" resistance-type spark plug.
The large muffler reduces exhaust noise.
When starting the engine, the exhaust valve is held open to reduce compression pressure for easier starting.
When starting the engine:
- The decompression weight pushes the pin up to push the lifter.
- The exhaust valve is held in the open position, rather than be opened and closed by the camshaft.
When operating the engine:
- Centrifugal force causes the decompression weight to open, which lowers the pin.
- With the pin lowered, the exhaust valve operates normally, and is controlled by the camshaft.
A cast iron sleeve is used to increase engine durability and decrease cylinder wear. Due to the difference in expansion rates of aluminum and cast iron, a "Spiny" sleeve design is used to reduce air pockets created by different amounts of expansion. This design also promotes heat transfer from sleeve to block, allowing the cooling fins to work more effectively.
The exhaust valve is manufactured from high-heat-resistant SUH3 steel. The entire valve surface has a polished Tufftride® finish, increasing hardness and decreasing friction through the valve guides. The valve seat is Stellite® coated to increase resistance to the 700+° C valve face temperature exposure.
Due to the larger displacement of the MZ360 engine, a balancer shaft assembly is utilized to minimize vibration.
* Consult Billiou's. Inc. for availability from Yamaha Motor Corporation, USA. Available options may require extended lead time for compliance testing when applicable.
Yamaha Engine Website