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.
General information
| Engine Specifications | |
| Model | FH661V |
| 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 |
| Cooling system | Air-cooling |
| 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 |
Maintenance data
| Engine | |
| Maximum speed | 3500 ± 100 rpm |
| Idle speed | 1500 ± 100 rpm |
| Cylinder compression | 3.9 kg/cm2 (56 psi) at 500 rpm |
| Valve clearance | |
| 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 system | |
| 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.) |
| Ignition system | |
| 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 |
can you us a socket head cap screw in place of (92172-7005) screw on the carburetor bowl. It is a lot easier to remove.
Dear Sir/Madam,
How do I change the oil pump on aKawasaki FH661V ? Can an guy with basic skills attempt it?
Kind regards
Stephen
What is the difference between FH661V-BS04 and FH661V-BS05?
The convenience oil change device popped open while the engine was in use and drained the engine of oil. Engine seized up. Will a new crank shaft connecting rods and pistons fix it? Or is there likely crank shaft bearings or cylinder wall issues to deal with. I believe the cylinder walls are steel sleeve in these motors. 801 857 8126
i have a fh661v b27874 what number on head gasket i need 2 thanks
Little more elaborate product specs opposed to other sites, except the shaft sizes, i.e. the one thing I came for.