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WM12 Diesel Engine
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The WM12 diesel is professionally marinized in Australia. Our engineering upgrade is heavy duty, and only proven components are chosen. Standard features include ZF Hurth gearboxes, Johnson water pumps, Polyflex engine mounts, Bosch electrical gear and VDO instrumentation. All WM Diesel engines feature large capacity heat exchangers made from 'admiralty bronze' with heavy walled copra nickel tube, which is hand soldered (with 45% silver solder) for extra long life. 

The WM12 is based on the Kubota Z482 and features the new E-TVCS, 3 vortex pre-combustion chamber design from Kubota. This offers improved efficiency with lower emissions.

All WM Diesels are covered by a full 12 months parts and labour warranty and the base Kubota engine has a 2 year world-wide warranty.

WM12 Performance Curve
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Control Panel keyed with ignition switch, stop button, and 3 lamps.

WM12 Diagrams
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Engine Model WM12  Note: 12HP or 9.3Kw

Engine Base Kubota Z482 Note: 4 stroke diesel

Number of Cylinders Two  Note: In Line

Bore x Stroke 67 x 68mm Note: 2.64" x 2.68"

Displacement 479cc  Note: 29.23 cu.in.

Maximum Output 9.3Kw  Note: 12.5HP

Maximum RPM 3600 RPM Note: See performance data below

Injection Indirect type Note: E-TVCS combustion system

Cold starting aid 2 x Glow Plugs Note: Easy access

Cooling system Heat exchanger Note: Hand made

Salt Water Pump Johnson Note: Quality pump

Exhaust Outlet 40mm Diameter Note: 1.57"

Engine Mounts Polyflex Note: Quality mountings


Alternator 30 AMP Nippon Denso Note: Quality alternator

Gear Box Hurth HBW50  Note: Choose 2-1 or 3-1

Propellor Rotation Right Hand  Note: Clockwise from aft

Weight  87Kg/191Lb Note: Including gear box

Optional Extras: Polyflex flexible coupling, PTO pulley, shaft coupling, controls, delux paint, installation kits, and hot water kits. Specific individual requirements and modification to our basic engine layouts available on request. 

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WM Diesel, Unit 1/10 Polo Avenue, Mona Vale 2103, New South Wales, Australia.
Phone +61 2 9979 5480 Fax +61 2 9979 8863 wmdiesel@tpg.com.au