The Kawasaki FD671D is a 0.75 l (745 cc, 45.46 cu-in) V-twin 90° liquid-cooled 4-stroke internal combustion small gasoline motor with horizontal shaft, manufactured by Kawasaki Heavy Industries LTd., for general-purpose applications.
The FD671D has OHV (overhead valve design); cast-iron cylinder liners; float type carburetor with fixed main jet; transistorized fuel pump; full transistor ignition system with fixed timing; mechanical governor and low tone muffler. The Kawasaki FD671D uses a full pressure lubrication system with spin-on oil filter and dual element air cleaner.
The engine was equipped with solenoid shift-type electric starter and 12V-20A charging coil with a regulator.
The Kawasaki FD671D develops 20.8 PS (15.3 kW; 20.5 HP) at 3,600 rpm and 50.0 Nm (5.1 kg·m; 36.9 ft·lb) at 2,400 rpm of torque. Bore and stroke are 78.0 mm (3.07 in) and 78.0 mm (3.07 in), respectively. Compression ratio rating is 8.0:1.
|Type||4-stroke, OHV, V-twin 90°|
|Displacement||745 cm 3 (45.46 cu-in)|
|Max. horsepower||20.8 PS (15.3 kW; 20.5 HP) at 3,600 rpm|
|Max. torque (crank PTO)||50.0 Nm (5.1 kg·m; 36.9 ft·lb) at 2,400 rpm|
|Ignition system||Transistorized ignition|
|Lubricating system||Pressure feed lubrication system|
|Starting system||Electric starter|
|Charging system||12 Volt – 20A with regulator|
|Fuel used||Unleaded gasoline (octane number 86 or higher)|
|Fuel consumption||230 g/HPh|
|Cooling system||Pressurized forced circulation type|
Tightening torque specs
|Tightening torque specs||Cylinder head||27 Nm; 2.7 kg·m; 20 ft·lb|
|Connecting rod||21 Nm; 2.1 kg·m; 15.5 ft·lb|
|Flywheel||56 Nm; 5.5 kg·m; 41 ft·lb|
|Crankcase cover||22 Nm; 2.2 kg·m; 16.2 ft·lb|
|Intake manifold||12 Nm; 1.2 kg·m; 9 ft·lb|
|Oil drain plug||25 Nm; 2.5 kg·m; 18.5 ft·lb|
|Valve clearance lock nut||11 Nm; 1.1 kg·m; 8 ft·lb|
|Maximum speed||3500 ± 100 rpm|
|Idle speed||1500 ± 100 rpm|
|Cylinder compression||7.2 kg/cm2 (102 psi) at 500 rpm|
|Intake valve||0.15 mm (0.006 in)|
|Exhaust valve||0.15 mm (0.006 in)|
|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 (with filter changed)||1.8-2.0 L (1.9-2.1 US qt)|
|Spark plug||NGK: BPR2ES|
|Spark plug gap||0.75 mm (0.03 in)|
|Spark plug tightening torque||25 Nm; 2.5 kg·m; 18.5 ft·lb|
|Ignition coil air gap||0.25-0.40 mm (0.009-0.015 in)|
We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.
Be the first to comment