The Kawasaki FH661V is a 0.68 l (675 cc, 41.19 cu-in) V-twin 90° air-cooled 4-stroke internal combustion small gasoline engine with vertical shaft, manufactured by Kawasaki Heavy Industries LTd., for general-purpose applications.
The FH661V has V-twin 90° design with cast iron cylinder liners and overhead V-valves (OHV). The engine is equipped with twin-barrel, float type carburetor with fixed main jet; pulse type fuel pump and flywheel magneto transistor type ignition system. The Kawasaki FH661V uses a full pressure lubrication system with spin-on oil filter and dual element air cleaner.
The engine has BENDIX type electric starter and 12V-13A charging coil with a regulator.
Cylinder bore and piston stroke are 72.5 mm (2.85 in) and 76.0 mm (2.99 in), respectively. Compression ratio rating is 8.1:1. The Kawasaki FH661V produced 22.3 PS (16.4 kW; 22.0 HP) at 3,600 rpm.
|Type||4-stroke, OHV, V-twin 90°|
|Displacement||675 cm 3 (41.2 cu-in)|
|Max. horsepower||22.3 PS (16.4 KW; 22.0 HP) at 3,600 rpm|
|Max. torque (crank PTO)||–|
|Carburetor||Twin barrel, float type|
|Ignition system||Flywheel magneto transistor type|
|Lubricating system||Full pressure with spin-on oil filter|
|Starting system||Electric starter|
|Charging system||12 Volt – 13A with regulator|
|Fuel used||Unleaded gasoline (octane number 86 or higher)|
|Fuel consumption||245 g/HPh|
|Cooling system||Pressurized forced circulation type|
Tightening torque specs
|Tightening torque specs||Cylinder head||25 Nm; 2.5 kg·m; 18.4 ft·lb|
|Connecting rod||21 Nm; 2.1 kg·m; 15.5 ft·lb|
|Flywheel||56 Nm; 5.7 kg·m; 41.3 ft·lb||Crankcase cover||25 Nm; 2.5 kg·m; 18.4 ft·lb|
|Intake manifold||6 Nm; 0.6 kg·m; 4.4 ft·lb|
|Valve clearance lock nut||7 Nm; 0.7 kg·m; 5.1 ft·lb|
|Maximum speed||3500 ± 100 rpm|
|Idle speed||1500 ± 100 rpm|
|Cylinder compression||3.9 kg/cm2 (56 psi) at 500 rpm|
|Intake valve||0.10-0.15 mm (0.004-0.006 in)|
|Exhaust valve||0.10-0.15 mm (0.004-0.006 in)|
|Oil type||4-stroke or an equivalent (SF, SG, SH, or SJ )|
|Recommended oil||SAE 10W-40, 10W-30, 5W-20|
|Oil capacity (with filter changed)||1.8 litre (1.9 US.qt.)|
|Spark plug||NGK: BPR4ES|
|Spark plug gap||0.75 mm (0.029 in)|
|Spark plug tightening torque||22 Nm; 2.2 kg·m; 16.2 ft·lb|