The 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
Engine | |
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) |
Thermostat | |
Valve opening temperature | 63-66° C (145-150° F) |
Valve full openning lift | 7.0 mm (0.28 in) at 80° C (176° F) |
Thermoswitch | |
Detect temperature | 110° ± 2° C (226° ± 36° C) |
Starter motor | |
Brush length | 10 mm (0.40 in), limit: 6.0 mm (0.24 in) |
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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