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John Deere Marine Propulsion Engines

6068TFM50

Marine Propulsion Engine

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6.8L PowerTech™
115-168 kW (154-225 hp)

Features

Watercooled turbocharger and exhaust manifold

Cooler and quieter environment for vessel and crew

Replaceable wet-type cylinder liners

Excellent heat dissipation
Hardened and precision machined for long life
Rebuild to original specifications

Corrosion resistant components

Provides engine protection from the effects of seawater

Either-side service

Oil fill and dipstick combinations
Remote oil filter for easier service access
Application and service flexibility to provide installation convenience plus fast and easy maintenance

Heat exchanger or keel-cooled

High-capacity heat exchanger designed for reliable operation in adverse conditions
Integrated expansion tank, heat exchanger and exhaust manifold
Keel cooler or heat exchanger options provide application flexibility

High torque and low rated RPM

Enables the engine to turn larger propellers at lower speed for best efficiency
Excellent vessel control and maneuvering
Lower rated rpm limits vibration and noise for better crew comfort

Fuel system

Proven and reliable Mechanical Governor

Specifications

Emissions Certifications

Non-Certified	-

General Data (based on standard option configuration)

Model	6068TFM50
Number of cylinders	6
Displacement-- L (cu in)	6.8 (415)
Bore and Stroke-- mm (in)	106 x 127 (4.17 x 5.00)
Engine Type	In-line, 4- Cycle
Aspiration	Turbocharged
Length - mm (in)	1141 (44.9)
Width Maximum - mm (in)	712 (28.0)
Height-- mm (in)	881 (34.7)
Weight, dry - kg (lb)	730 (1609)

Engine Specifications

Performance Rating	Power KW (bhp) Rated Speed (rpm) Rated fuel consumption L/hr(gal/hr)
M1	115 ( 154 ) 2300
M2	130.5 ( 175 ) 2400 36.3 ( 9.6 )
M3	149 ( 200 ) 2500
M4	168 ( 225 ) 2600 46.8 ( 12.4 )

M rating

M1 - Typical annual usage (hr)	Unrestricted
M1 - Typical full-power operation (hr)	Uninterrupted
M1 - Typical load factor	<65%
M2 - Typical annual usage (hr)	000-5
M2 - Typical full-power operation (hr)	16 of each 24 hr
M2 - Typical load factor	<=65%
M3 - Typical annual usage (hr)	000-4
M3 - Typical full-power operation (hr)	4 of each 12 hr
M3 - Typical load factor	<=50%
M4 - Typical annual usage (hr)	000-3
M4 - Typical full-power operation (hr)	1 of each 12 hr
M4 - Typical load factor	<=40%

6068TFM50 | Marine Propulsion Engine | John Deere US