Glow plugs on the 2025R provide quick starts in temperatures down to 0° F.Full-pressure lubrication system provides filtered oil under pressure to all vital engine parts.High-torque reserve provides plenty of power under heavy load yet retains excellent fuel economy.
Special flywheel flange seals flywheel air turbulence noise inside the flywheel housing.Timing gear teeth have a roll-off profile giving almost no clash, no noise, and no backlash.Higher top rings on the piston and a thinner head gasket greatly reduces the volume of unburned waste gases and increases combustion efficiency.Design permits tighter tolerances and neutralizes expansion of the piston, thereby reducing blow-by gas and generating less noise from the piston slap.Aluminum alloy piston with built-in steel struts are lightweight to reduce connection rod bearing loads and provide good heat transfer characteristics.Direct fuel injection on the 2032R injects fuel on top of the pistons and allows for more efficient combustion and fuel economy.Indirect fuel injection on the 2025R uses a pre-combustion chamber to give the engine a smooth and quiet operation.Economical cast-in block cylinder design for good cooling and long life.Yanmar TNV Series engine offers these features:
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