Model: 7.
5EKD-Low CO 60 Hz
6EFKD-Low CO 50 Hz
Gasoline
Marine Generator Set
Engine Features
D Gasoline fueled
D Two cylinder
D Four cycle
D Integral heat exchanger
D Lifting eye
D Fuel cooler/pump assembly
D Fuel filter
D Closed cooling system
D CARB/EPA emission compliant
D Throttle-body fuel injected
D Ultra low CO emissions
Generator Features
D Remote start 12-pin connector
D Class H insulation
D 60/50 Hz capability
D Voltage regulation of ±1.5%
D RFI suppression
Generator Weights and Dimensions D Voltage adjustability
D Captive vibration isolation mounting system
Without With
Sound Shield Sound Shield
Advanced Digital Control II Features
Weight, kg (lbs.) D Designed for today’s most sophisticated electronics
Wet D Easy to read 12 x 2 LCD alpha-numeric display
7.5EKD 120 (265) 132 (290) D Potted boards/sealed connectors for maximum
6EFKD 120 (265) 132 (290)
Dry
corrosion protection
7.5EKD 118 (260) 129 (285) D J-1939, SmartCraftt, NMEA 2000 selectable
6EFKD 118 (260) 129 (285) CANbus outputs
D Remote monitoring of fault conditions
Length, mm (in.) 691 (27.20) 773 (30.43) D Pushbutton dial for configuration and adjustment
Width, mm (in.) 466 (18.35) 500 (19.69) D Programmed crank cycle
D CO sensor module
Height, mm (in.) 445 (17.51) 467 (18.39)
See the drawings on the last page for the detailed dimensions. Optional Accessories
D Remote digital gauge (2 or 3 inch)
Generator Ratings D Ship-to-shore transfer switch
25_C (77_F) 25_C (77_F) D Seawater strainer
Model Series Voltage Hz Amps kW/kVA D Siphon break
D Sound shield
120 60 62.5 7.5/7.5
7.5EKD
120/240 60 31.3 7.5/7.5
115/230 50 26.1 6/6
6EFKD 230 50 26.1 6/6
240 50 25.0 6/6
RATINGS: Marine continuous ratings per ISO 3046, ISO 8528-1, and Kohler ISO rating guideline
2.14. Obtain technical information bulletin (TIB-101) on ratings guidelines for complete ratings
definitions.
Availability is subject to change without notice. Kohler Co. reserves the right to change the design or
specifications without notice and without any obligation or liability whatsoever. Contact your local
Kohler generator distributor for availability.
SmartCraftt is a trademark of Mercury Marine, a division of Brunswick Corporation.
G2-129 (7.5EKD) 6/12b
Application Data
Engine Cooling
Engine Specifications 60 Hz 50 Hz Cooling System 60 Hz 50 Hz
Manufacturer Kohler L (qts.) 3 (3.2)
Model LH690 Heat exchanger type 1.5 in. dia. x 1 pass
Type 4 Cycle Seawater pump type Belt-driven,
6-blade impeller
Cylinders, number 2
Heat rejected to cooling water at rated
Displacement, L (CID) 0.674 (41.1) kW, wet exhaust Btu/min. 811 676
Bore and stroke, mm (in.) 80 (3.15) x 67 (2.64)
Engine water pump flow, Lpm (gpm) 37.9 (10.0) 31.5 (8.3)
Compression ratio 8.5:1 Seawater pump flow, Lpm (gpm) 22.7 (6) 18.9 (5)
Rated rpm 3600 3000
Max. power at rated rpm, HP 18.9 15.8 Operation Requirements
Cylinder block material Aluminum Air Requirements (Engine) 60 Hz 50 Hz
Cylinder head material Aluminum Engine combustion air requirements,
Crankshaft material Hardened steel m3/min. (cfm) 1.21 (42.8) 1.01 (35.7)
Piston rings 2 compression/1 oil control Generator cooling requirements,
m3/min. (cfm) 3.4 (120) 2.8 (100)
Crankshaft bearings, type Insert
Exhaust gas flow rate, m3/min. (cfm) 3.7 (130) 2.9 (102)
Intake valve material SAE HNV3 (SIL 1)
Exhaust gas temperature, _C (_F) 649 (1200) 593 (1100)
Exhaust valve material SAE EV8 (21-4N), Maximum allowable exhaust back
SAE HNV3 (SIL 1), pressure, mm Hg (in. Hg) 76.2 (3) 76.2 (3)
SAE VF2 (Stellite 6)
Connecting rod material Aluminum
Engine Features
Piston material Aluminum D Meets Coast Guard safety standards for electrical systems and
Governor, type Electronic gasoline fuel systems (33CFR183)
D One-side serviceability of fuel filter, cooling system, and lubrication
system
Engine Electrical D Throttle-body electronic fuel injection
Engine Electrical System 60 Hz 50 Hz D High water temperature, high exhaust temperature, low oil
pressure, and loss of seawater cutouts
Ignition Inductive
D Injection-molded, “tuned” air intake
Starter motor . . . . . . . . . . . . . . . . . . Bendix automotive type D Disposable oil and fuel filters
Spark plugs . . . . . . . . . . . . . . . . . . . Resistor-type RFI D Integral heat exchanger/exhaust manifold
suppression D Oil drain valve
Battery voltage (DC) 12 D Full-pressure lube
Battery charging alternator 25 amp D Fuel cooler/pump assembly
D “Smart” ignition coils
Battery recommendation (min.) 250 CCA
D Integral 12-volt battery charger
D Unit-mounted overflow bottle
Fuel D Cool catalyst
Fuel System 60 Hz 50 Hz
Type Throttle-body fuel injected Generator Features
Low pressure fuel pump 12 psi, electric D Brushed, rotating field design permits power to be obtained from
Fuel system, max. lift, m (ft.) 0.9 (3.0) stationary leads.
High pressure fuel pump, max. lift, m (ft.) 43 psi water cooled electric D Rotor and stator are vacuum impregnated and coated with
high-bond epoxy varnish. Varnish helps prevent corrosion in
high-humidity areas.
Fuel Consumption 60 Hz 50 Hz D Rotors are dynamically balanced to minimize vibration.
D Copper windings ensure minimal heat buildup. Insulation meets
Gasoline, Lph (gph) at % load
NEMA standards for class H insulation.
100% 4.24 (1.12) 3.52 (0.93)
D Directly connected to the engine, the generator has sealed precision
75% 3.60 (0.95) 2.99 (0.79) ball bearings with a precision-machined steel sleeve in the end
50% 3.26 (0.86) 2.73 (0.72) bracket (or end bearing tolerance ring) to prevent shaft
misalignment and extend bearing life.
25% 2.73 (0.72) 2.27 (0.60)
D Circuit breakers protect the generator from extreme overload.
Lubrication D Mounted on a drip-proof tray.
D Equipped with a four-lead reconnectable stator.
Lubricating System 60 Hz 50 Hz
Type Pressure
Oil capacity with filter, L (qts.) 1.9 (2.0)
G2-129 (7.5EKD) 6/12b
Application Data
Advanced Digital Control II Features Accessories
Sound Shield
Provides for highly effective silencing, ease of access for
engine/generator servicing, low maintenance, excellent durability,
and safety.
Siphon Break
Mandatory kit for generators installed below the waterline.
Prevents the siphoning of flotation water into the engine.
Ship-to-Shore Switch
The Kohler ship-to-shore transfer switch allows immediate
switching to the Kohlerr generator set power or shore power,
Controller Features: protecting the electrical system from the possibility of
D Integrated genset control, spark/fuel control, & voltage regulation simultaneous connection to both power sources.
D Selectable Smartcraftt V1.0, NMEA 2000, & SAEJ-1939 outputs Remote Digital Gauge
D Hybrid voltage regulation Allows starting/stopping from a location remote from the generator
D USB interface set. Standard 76.2 mm (3 in.) dia. hole required for mounting.
d Ease of uploading and downloading software Oil Pressure Sender Kit
d Historical and diagnostic information
Provides the sender necessary to display oil pressure on the digital
d Real time diagnostics gauge.
d Front-face accessible
Remote Start Panel
D Onboard CO sensor
Allows starting/stopping from a location remote from the generator
D Metering capabilities set. Supplied with a 101 mm (4 in.) connection harness. The
D NXP microprocessor with 512 KB Flash and 60 KB RAM overall mounting dimensions are 128 mm (5.04 in.) by 70 mm
(2.76 in.) with a minimum mounting depth of 57 mm (2 1/4 in.).
D 179 x 126 x 47 mm (7.1 x 5.0 x 1.9 in.) dimension
Remote Connection/Extension Harness
Display Type/Features: Provides wiring between the remote digital gauge and the ADC
D 12 character x 2 line LCD display connector. Extension limited to a total of four kits and 23 m (75 ft.).
Available in 4.6 m (15 ft.) and 7.6 m (25 ft.) lengths.
D Temperature range (--20 to 70_ C)
D Alternative 4 to 6 character alphanumeric LED display 12-Inch Remote Wiring Harness
D Displays: Equipped with a 12-pin connector on one end that connects to the
standard customer interface connector. Equipped on the other end
d Runtime hours with leads for connection to customer-supplied wiring.
d Crank cycle status
Line Circuit Breakers
d Warnings
Protects the generator from extreme overload.
d Faults
d Diagnostics Sea Sparest Maintenance Kit
d Setup parameters Kohler’s Sea Spares Kit consists of a durable white utility box filled
with necessary marine parts.
d Software version
D Maintenance minder (customer programmable)
D 2-button keypad: Single power momentary and Start/Stop
D Standard non-membrane switch overlay
D 12 mm rotary encoder knob with pushbutton features:
d Voltage
d Gain
d V/Hz adjustment
D Controller configuration
D Tri-color LED indicator displays system ready, warning, and
fault status
SmartCraftt is a trademark of Mercury Marine, a division of Brunswick Corporation.
G2-129 (7.5EKD) 6/12b
KOHLER CO., Kohler, Wisconsin 53044 USA
Phone 920-457-4441, Fax 920-459-1646
For the nearest sales and service outlet in the
US and Canada, phone 1-800-544-2444
KohlerPower.com
ADV-7439A-B
ADV-7439B-B
DISTRIBUTED BY:
NOTE: Dimensions in brackets are inch equivalents.
NOTE: This drawing is provided for reference only and is not
intended for installation planning. Contact your local
distributor for more detailed information.
E 2008, 2009, and 2012 by Kohler Co. All rights reserved.
G2-129 (7.5EKD) 6/12b
