Witchards Marine - inboard diesel engine manufacturers for yacht or motor boat

WM22 Diesel Engine
(Click to enlarge)

The WM22 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 WM22 is based on the Kubota DD905E 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.


WM22 Performance Curve (Click to enlarge)	Control Panel with ignition switch, VDO tacho, and 3 warning lamps.	WM22 Diagrams (Click to enlarge)

	Engine Model	WM22	Note: 23.5HP or 17.5Kw
	Engine Base	Kubota D905	Note: 4 stroke diesel engine
	Number of Cylinders	Three	Note: In Line
	Bore x Stroke	72x73.6mm	Note: 2.83"x2.89"
	Displacement	898cc	Note: 54.86 cu.in.
	Maximum Output	17.5Kw	Note: 23.5HP
	Maximum RPM	3600 RPM	Note: See performance data below
	Injection	Indirect type	Note: E-TVCS combustion system
	Cold starting aid	3 x Glow Plugs	Note: Easy access
	Cooling system	Heat exchanger	Note: Hand made in copra nickel
	Salt Water Pump	25mm Johnson	Note: Quality pump
	Exhaust Outlet	50mm Diameter	Note: 2"
	Engine Mounts	Polyflex	Note: Quality mountings
	Alternator	50 AMP Bosch 12V	Note: Quality alternator
	Gear Box	Hurth HBW100	Note: Choose 2-1 or 3-1
	Propeller Rotation	Right Hand	Note: Clockwise from aft
	Weight	140Kg/308Pounds	Note: Including gear box
Optional Extras: Polyflex flexible coupling, PTO pulley, shaft coupling, propeller, single lever controls, electric stop, compressor or bilge pump brackets, deluxe instrument panel, delux paint, installation kit, and hot water kits. Specific individual requirements and modification to our basic engine layouts available on request.