4TNV88-BDSA (47.5HP @ 3000RPM)

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Clean Emissions
Building off the proven TNE design, YANMAR has achieved superior exhaust emissions by improving the combustion chamber and fuel injection equipment design. Engines are compliant with 2008 EPA Tier 3 and EU stage III A exhaust emissions regulations.

Reliable and Durable
The TNV engines now proudly take up the running as YANMAR’s premium small industrial diesel. They offer even more enhanced durability due to better block cooling, a stiffer crank and pistons, finer tolerance in the journal, and more. CAE analysis has brought lower vibrations and higher strength to the mounting structure for even better reliability in heavy-duty jobs.

Fuel Delivery and Economy
A newly designed, in-line ML type fuel injector pump is utilized to assure more precise fuel delivery and control. The result is reduced emissions, improved performance over a wide range of applications and good fuel economy which assures that YANMAR’s reputation for superior starting characteristics continues.

Noise Level Reduction
YANMAR’s original CAE techniques have optimized the stiffness, minimized transformation, and reduced radiant noise in the cylinder block. Gear noise reduction is achieved through an improved gear tooth profile resulting in less mechanical noise.

Lubrication System
7.4 L Capacity Deep Oil Pan
Trochoid Oil Pump
Paper Element Oil Filter
Oil Pressure Switch
Crankcase Breather, Closed Type

Electrical System
12V, 40 Amp Alternator
12V Starter Motor
Glow Plugs
Preheat Timer, 15 second (shipped loose)
Stop Solenoid Timer, 1 second (shipped loose)

Fuel System
Distributor-Type MP2 Fuel Injection Pump
12V Electric Fuel Pump (shipped loose)
Paper Element Fuel Filter
Water Separator (shipped loose)
Stop Solenoid, Integral to Fuel Injection Pump

Cooling System Water Pump, Belt Driven
7-Blade, 380mm Cooling Fan—Puller Type
160ºF (71ºC) Thermostat
Temperature Switch
Fan Belt

Power Take Off
Flywheel, SAE 7 1/2”
Flywheel Housing, SAE #5 t=124
Aux Drive, 9-tooth w/SAE 2 bolt “A” Flange
Type4 Cylinder, 4-Cycle, Liquid Cooled Diesel Engine
Bore88 mm
Stroke90 mm
Displacement2.190 L
AspirationNaturally Aspirated
Combustion SystemDirect Injection
Rotation (from flywheel end)Counterclockwise
Dry Weight363 lbs (165 kg)
Number of Cylinders4
Rated Output47.5/3000 (hp/rpm)

For the latest manuals, product guides, spec sheets and more, please visit Yanmar's product page.

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