Kohler KD420 User manual

Technical Drawings

Standard Equipment

• Recoil Start with Automatic Compression Release

• Fuel Tank

• Fuel Filter

• Dry Air Cleaner

• Mufﬂer with Guard

• Accelerator and Stop Manual Control

• 12 V Electric Start with Control Panel

• SAE J609a Ext 4 Crankshaft with Type B

Mounting Flange

• Fuel Safety Shutdown for Low Oil Pressure

Accessories

• Internal Dynamic Balancer

• 24 V Electric Start

• Accelerator and Stop Remote Control

• Key Start Panel with Shutdown Device

• Fuel Lift Pump

• Oil Temperature Switch

• Glow Plug on Intake Manifold

• SAE J609a Ext 9, 6 and 3 Integral Crankshafts

with Type B Mounting Flange

• Extended Wiring Harness

403.0/15.86 335.5/13.20

31.0/1.22

138.5/5.45

512.0/20.15

120.0/4.72120.0/4.72

196.70/7.74

509.0/20.03

488.0/19.21

155.0/6.10

4.0/

0.15

203.5/8.01

99.0/3.89

54.0/2.12

14.0/0.55

49.0/1.92

120.0/4.72

45.0/1.77

5.5/0.21

96.0/3.77

8.0/0.31

21.0/0.82

5.0/0.19

23.0/0.90

105.0/4.13

25.0/0.98

4.0/0.15

8.0/0.31

33.0/1.29

135.0/5.31

5.0/0.19

KOHLER® Diesel

Model KD420

KOHLER Co., Kohler, Wisconsin 53044 • Tel: 920-457-4441

800-544-2444 • Fax: 920-459-1570 • KohlerEngines.com

4 of 4

Form E-2148 9/10

Printed in U.S.A.

1 Cylinder • 442 cc • 7.3 kW/9.8 hp • 3600 rpm • 17 ft lbs @ 2200 rpm

Certiﬁcation

• EPA Tier 4 (Hand-Start Provision)

• ECE R 24

Features

• 4-Stroke Air-Cooled Diesel Engine

• SAE J609a Crankshaft

• Counterclockwise Rotation

• Direct Injection

• Full-Pressure Lubrication

• Centrifugal Mass Governor

• Built-In Full-Flow Oil Filter

• Oil-Breathing Blow-By with Safety Device

• Automatic Extra-Fuel Starting Device

• Self-Bleeding Fuel System

• Torque Regulator

• Automatic Compression Release

• Die-Cast Aluminum Crankcase

with Integral Cast-Iron Cylinder Liner

• Aluminum Cylinder Head

• Mounting Feet

• Hydraulic Valve Lifters

• EGR System

Applications

• Two-Wheel Tractor

• Agricultural Mower

• Water Pump

• High-Pressure Cleaner

• Generator

• Vibrating Plate

• Hydraulic Power Pack

• Vibrating Roller

KOHLER® Diesel

Model KD420

1 of 4

Relentless Power.

Legendary Performance.

Speciﬁcations

Cylinders

Displacement

Bore

Stroke

Compression Ratio

Rating kW/hp

Maximum Torque

Minimum Idling Speed rpm

Fuel Tank Capacity

Oil Consumption

Oil Sump Capacity

Minimum Allowable Oil Pressure

Maximum Allowable Angle of Operation (Peak Values)

Volume of Air Required for Correct Combustion @ 3600 rpm

Volume of Air Required for Correct Cooling @ 3600 rpm

Dry Weight

Recommended Minimum Battery Size

Minimum Pulley Diameters for Belt Drive

No. of Cylinders 1

cc/cu in 442/27

mm/in 86/3.4

mm/in 76/3.0

20.3:1

N (80/1269/CEE) ISO 1585 7.3/9.8

NB ISO 3046 IFN 7.0/9.3

NA ISO 3046 ICXN 6.4/8.6

Nm/ft lbs @ 2200 rpm 23/17

950-1000

liters/quarts 5/5.3

kg/h/lb/h 0.0044/0.0097

liters/quarts 1.5/1.6

bar/psi 1-1.5/14.5-21.8

25° (35°)

liters/min/cfm 580/20

liters/min/cfm 5500/194

kg/lb 45/99.1

V/CCA Standard, Heavy-Duty 12/420, 510

D1 (mm) ≥ 620 [66+L2 (mm)] N (kW)

n (rpm)

D2 (mm) ≥ 650 [53+L1 (mm)] N (kW)

n (rpm)

Maximum Allowable Axial Load in Both Directions

A-B = 200 kg/441 lbf

Sound Pressure Level dBA

Sound Pressure Level Polar Diagram

Open Field at 7 Meters – No Load

Running Engine

KOHLER® Diesel

Model KD420

2 of 4 KohlerEngines.com

3600 rpm3000 rpm2000 rpm1000 rpm

dBA

Curves

N Power Curve – 80/1269/CEE – ISO 1585

NB Power Curve – ISO 3046/1 – IFN

NA Power Curve – ISO 3046/1 – ICXN

MN Torque Curve – (N Curve)

MB (B Curve – MA (A Curve)

C Speciﬁc fuel consumption – (NB Curve)

KOHLER® Diesel

Model KD420

KohlerEngines.com 3 of 4

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