The Kawasaki FD620D is a 0.6 l (617 cc, 37.7 cu-in) V-twin 90° liquid-cooled 4-stroke internal combustion small gasoline motor with horisontal shaft, manufactured by Kawasaki Heavy Industries LTd., for general-purpose applications.
The FD620D has OHV (overhead valve design); cast-iron cylinder liners; twin-barrel carburetor; electromagnetic in-line fuel pump; full transistor ignition system with fixed timing; dual-stage air cleaner; mechanical governor; pressure feed lubrication system with positive displacement pump; 12-volt charging system and electric starter.
The Kawasaki FD620D develops 19 PS (14 kW; 18.7 HP) at 3,600 rpm and 44.6 Nm (4.55 kg·m; 32.91 ft·lb) at 2,200 rpm of torque. Bore and stroke are 76.0 mm (2.99 in) and 68.0 mm (2.68 in), respectively.
General information
| Engine Specifications | |
| Model | FD620D |
| Type | 4-stroke, OHV, V-twin 90° |
| Displacement | 617 cm 3 (37.7 cu-in) |
| Max. horsepower | 19 PS (14 KW; 18.8 HP) at 3,600 rpm |
| Max. torque (crank PTO) | 44.6 Nm (4.55 kg·m; 32.91 ft·lb) at 2,200 rpm |
| Carburetor | Twin barrel |
| Cooling system | Liquid-cooling |
| Ignition system | Transistorized ignition |
| Lubricating system | Pressure feed lubrication system |
| Starting system | Electric starter |
| Charging system | 12 Volt – 20 or 30 amps with regulator |
| Fuel used | Unleaded gasoline (octane number 86 or higher) |
| Cooling system | Pressurized forced circulation type |
Dimensions and Weight
| FD620D | |
| Length, mm (in) | 556 (21.9) |
| Width, mm (in) | 448 (17.6) |
| Height, mm (in) | 624 (24.6) |
| Dry weight, kg (lb) | 41.5 (91.5) |
Maintenance data
| Engine | |
| Idle speed | 1500 ± 100 rpm |
| Cylinder compression | 12.0 kg/cm2 (170 psi) at 500 rpm |
| Valve clearance | |
| Intake valve | 0.25 mm (0.010 in) |
| Exhaust valve | 0.25 mm (0.010 in) |
| Oil system | |
| Oil type | 4-stroke or an equivalent (SC, SD, SE, SF, SG, or SH) |
| Recommended oil | SAE 10W-40, 10W-30, 5W-20 |
| Oil capacity (without filter changed) | 1.5 L (3.17 US pt) |
| Oil capacity (with filter changed) | 1.8 L (3.80 US pt) |
| Oil pressure (min) | 2.8 kg/cm2 (40 psi) |
| Cooling system | |
| Coolant capacity | 2.7 L (0.7 US gallon) |
| Thermostat | |
| Valve opening temperature | 63-66° C (145-150° F) |
| Valve full openning lift | 7 mm (0.28 in) at 80° C (176° F) |
| Thermoswitch | |
| Detect temperature | 110° ± 2° C (226° ± 36° C) |
| Ignition system | |
| Spark plug | NGK: BMR4A |
| Spark plug gap | 0.6-0.7 mm (0.024-0.028 in) |
| Starter motor | |
| Brush length | 10 mm (0.40 in), limit: 6.0 mm (0.24 in) |
I have a 3000 Kawasaki Mule was running great now 1 cyliderwill not fire I put new spark plugs in it and still will not fire any ideas ???
hope you figuerd it all out because its been three dam years.. check the cylinder coil thats my guess bud good luck ..
I am looking for a carburator for a John Deere gator hpx 4×4 with a 617cc liquid cooled Kawasaki vtwin . The stock carb is a mikuni but is bad . Do you carry a replacement carb for this application? Tha ks
I need to replace a piston liner… where can i get oem…