Kawasaki FD620D

Kawasaki FD620DThe Kawasaki FD620D is a 617 cc, (37.65 cu·in) natural aspirated V-twin 90° four-stroke liquid-cooled internal combustion small gasoline engine with a horizontal shaft, manufactured by Kawasaki for general-purpose applications.

A 76.0 mm (2.99 in) cylinder bore and 68.0 mm (2.68 in) piston stroke give the FD620D engine a total of 617 cc of displacement. The compression ratio rating is 9.0:1.

The Kawasaki FD620D engine produced 19.0 PS (14.0 kW; 18.8 HP) at 3,600 rpm of maximum output power and 44.6 N·m (4.5 kg·m, 32.9 ft·lb) at 2,200 rpm of peak torque.

The Kawasaki FD620D features:

  • OHV design
  • Transistorized ignition system
  • Twin barrel carburetor
  • Centrifugal governor
  • Pressurised lubrication system
  • Liquid-cooled cooling system
  • Electric starter (shift type)

General information

Engine Specifications
Engine model FD620D
Engine type 4-stroke, V-twin 90°
Displacement 617 cm3, (37.65 cu·in)
Max. horsepower 19.0 PS (14.0 kW; 18.8 HP) at 3,600 rpm
Max. torque 44.6 N·m (4.5 kg·m, 32.9 ft·lb) at 2,200 rpm
Cooling system Liquid-cooled
Air cleaner Dual stage element
Lubricating system Pressurised
Ignition system Transistorized ignition
Fuel system Twin barrel carburetor
Fuel tank capacity 20.0 L (5.28 US. gal. 4.4 Imp. gal.)
Fuel used Unleaded gasoline (octane number 86 or higher)
Starting system Electric starter (shift type)
Governor All speed mechanical governor
Charging system 12V 20/30A with regulator
PTO shaft rotation Counterclockwise (from PTO shaft side)
Dimensions (L x W X H) 555 x 450 x 624 mm (21.9 x 17.7 x 24.6 in)
Dry weight 41.5 kg (91.5 lbs)

Cylinder Block and Head

Cylinder block
Compression ratio: 9.0:1
Cylinder bore: 76.0 mm (2.99 in)
Piston stroke: 68.0 mm (2.68 in)
Number of piston rings (compression / oil): 2/1
Cylinder head
Valve arrangement: OHV
Valves: 2 (4 valves in total)

Tightening torque specs

Tightening torque specs
Cylinder head 21 Nm; 2.1 kg·m; 15.5 ft·lb
Connecting rod 21 Nm; 2.1 kg·m; 15.5 ft·lb
Flywheel 110.0 Nm; 11.22 kg·m; 81.18 ft·lb
Crankcase cover 21 Nm; 2.1 kg·m; 15.5 ft·lb
Intake manifold 8 Nm; 8.0 kg·m; 6 ft·lb
Oil drain plug 23.0 Nm; 2.35 kg·m; 17.0 ft·lb
Valve clearance lock nut 8.8 Nm; 0.9 kg·m; 6.5 ft·lb

Service Data

Maximum speed: 1500±100 rpm
Cylinder compression: 12.0 kg/cm2 (170 psi) at 500 rpm
Valve clearance
Intake valve clearance (COLD): 0.25 mm (0.0098 in)
Exhaust valve clearance (COLD): 0.25 mm (0.0098 in)
Oil system
Lubrication system: Pressurised
Oil type: SG, or SH
Recommended oil: SAE 10W-40, 10W-30, 5W-20
Oil capacity: W/o filter changed: 1.5 L (1.6 US. qt, 1.3 Imp. qt.)
With filter changed: 1.8 L (1.9 US. qt, 1.6 Imp. qt.)
Oil pressure (min): 2.8 kg/cm2 (40 psi)
Oil filter: Cartridge type full flow
Fuel system
Type: Twin barrel carburetor
Fuel pump: Electric
Fuel filter: Replaceable paper element
Ignition system
Type: Transistorized ignition
Spark plug: NGK: BMR4A
Spark plug gap: 0.6-0.7 mm (0.0236-0.0276 in)
Cooling system
Type Pressurized forced circulation type
Coolant capacity 2.7 liters (0.7 US gal, 0.6 Imp. gal)
Valve opening temperature 63-66° C (145-150° F)
Valve full openning lift 7.0 mm (0.28 in) at 80° C (176° F)
Detect temperature 110° ± 2° C (226° ± 36° C)
Starter motor
Brush length 10 mm (0.40 in), limit: 6.0 mm (0.24 in)
ATTENTION! Dear visitors, this is an informational database of technical specifications, we are not a parts supplier or a marketplace.

We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.

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