Kawasaki FD620D DFI

Kawasaki FD620DThe Kawasaki FD620D DFI 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 DFI engine a total of 617 cc of displacement. The compression ratio rating is 9.0:1.

The Kawasaki FD620D DFI 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 DFI features:

  • OHV design
  • Flywheel magneto transistor ignition system
  • Multi port digital fuel injection
  • Compact electronic control unit
  • Centrifugal governor
  • Pressurised lubrication system
  • Liquid-cooled cooling system
  • Electric starter (shift type)

General information

Engine Specifications
Engine modelFD620D DFI
Engine type4-stroke, V-twin 90°
Displacement617 cm3, (37.65 cu·in)
Max. horsepower19.0 PS (14.0 kW; 18.8 HP) at 3,600 rpm
Max. torque44.6 N·m (4.5 kg·m, 32.9 ft·lb) at 2,200 rpm
Cooling systemLiquid-cooled
Air cleanerDual stage element
Lubricating systemPressurised
Ignition systemFlywheel magneto transistor ignition system
Fuel systemMulti port digital fuel injection
Fuel tank capacity20.0 L (5.28 US. gal. 4.4 Imp. gal.)
Fuel usedUnleaded gasoline (octane number 86 or higher)
Starting systemElectric starter (shift type)
GovernorAll speed mechanical governor
Charging system12V 20/30A with regulator
PTO shaft rotationCounterclockwise (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 weight41.5 kg (91.5 lbs)
Cylinder block
Compression ratio:9.0:1
Cylinder bore:76.0 mm (2.99 in)
Piston stroke:68.0 mm (2.68 in)
Cylinder internal diameter (standard):76.067 mm (2.9948 in)
Piston skirt outer diameter (standard):75.875 mm (2.9872 in)
Number of piston rings (compression / oil):2/1
Connecting rod small end diameter (standard):17.051 mm (0.6713 in)
Piston pin diameter:16.975 mm (0.6683 in)
Side clearance (Top):0.150 mm (0.0059 in)
Side clearance (Second):0.120 mm (0.0047 in)
Ring end gap (Top):1.200 mm (0.0472 in)
Ring end gap (Second):1.200 mm (0.0472 in)
Ring width (Top):1.120 mm (0.0441 in)
Ring width (Second):1.120 mm (0.0441 in)
Ring width (Oil):1.500 mm (0.0591 in)
Cylinder head
Valve arrangement:OHV (overhead valves)
Valves:2 (4 valves in total)
Valve steam diameter (INTAKE):5.945 mm (0.2341 in)
Valve steam diameter (EXHAUST):5.925 mm (0.2333 in)
Valve spring free length (INTAKE):29.70 mm (1.1693 in)
Valve spring free length (EXHAUST):29.70 mm (1.1693 in)
Cam lobe height (INTAKE):25.21 mm (0.9930 in)
Cam lobe height (EXHAUST):25.46 mm (1.0020 in)
Camshaft journal diameter: PTO side: 15.907 mm (0.6263 in)
Flywheel side: 15.917 mm (0.6267 in)

Tightening torque specs

Tightening torque specs
Cylinder head21 Nm; 2.1 kg·m; 15.5 ft·lb
Connecting rod21 Nm; 2.1 kg·m; 15.5 ft·lb
Flywheel110.0 Nm; 11.22 kg·m; 81.18 ft·lb
Crankcase cover21 Nm; 2.1 kg·m; 15.5 ft·lb
Intake manifold8 Nm; 8.0 kg·m; 6 ft·lb
Oil drain plug23.0 Nm; 2.35 kg·m; 17.0 ft·lb
Valve clearance lock nut8.8 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:0.25 mm (0.0098 in)
Exhaust valve clearance: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:Multi-port digital fuel injection
Fuel pump:Electric
Fuel filter:Replaceable paper element
Ignition system
Type:Flywheel magneto transistor ignition system
Spark plug:NGK BMR4A
Spark plug gap:0.6-0.7 mm (0.0236-0.0276 in)
Cooling system
TypePressurized forced circulation type
Coolant capacity2.7 liters (0.7 US gal, 0.6 Imp. gal)
Valve opening temperature63-66° C (145-150° F)
Valve full openning lift7.0 mm (0.28 in) at 80° C (176° F)
Detect temperature110° ± 2° C (226° ± 36° C)
Starter motor
Brush length10 mm (0.40 in), limit: 6.0 mm (0.24 in)
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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.

Be the first to comment

Leave a Reply

Your email address will not be published.