The Kawasaki FE120 is a 124 cc (7.57 cu-in) single-cylinder air-cooled 4-stroke internal combustion small gasoline engine with horizontal shaft manufactured by Kawasaki Heavy Industries LTd., for general-purpose applications.
The FE120 engine has an OHV (overhead valve) design; cast iron cylinder liner; float type carburetor with fixed main jet; flywheel magneto transistor type ignition system; mechanical governor and recoil starter with automatic compression release (electric starter was available as an option). The engine uses dual-element air cleaner or oil bath type air cleaner as an option.
Сylinder bore is 60.0 mm (2.4 in) and the piston stroke is 44.0 mm (1.73 in), compression ratio rating is 8.5:1. The Kawasaki FE120 motor produced 4.1 PS (3 kW; 4.0 HP) at 3,600 rpm of horsepower and 7.6 Nm (0.78 kg·m; 5.61 ft·lb) at 2,800 rpm of torque. The FE120G – 1/2 cam gear reduction.
General information
Engine Specifications | |
Model | FE120D / FE120G |
Type | 4-stroke, OHV, single cylinder |
Displacement | 124 cm 3 (7.57 cu-in) |
Max. horsepower | 4.1 PS (3 KW; 4.0 HP) at 3,600 rpm |
Max. torque (crank PTO) | 7.6 Nm (0.78 kg·m; 5.61 ft·lb) ta 2,800 rpm |
Carburetor | Float type with fixed main jet |
Cooling system | Forced-air |
Ignition system | Flywheel magneto transistor type |
Lubricating system | Splash |
Starting system | Recoil or electric starter |
Stoping system | Ignition primary circuit ground |
Fuel used | Unleaded gasoline (octane number 86 or higher) |
Fuel tank capacity | 2.5 L (0.66 US Gal, 0.55 Imp Gal.) |
Fuel consumption | 250 g/HPh |
PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Dimensions and Weight
Kawasaki FE120 D/G | |
Length | 291 mm (11.5 in) |
Width | 349 mm (13.4 in) |
Height | 344 mm (19.5 in) |
Dry weight | 14.5 kg (32.0 lbs) |
Tightening torque specs
Tightening torque specs | |
Connecting rod bolt | 12 Nm; 1.2 kg·m; 9 ft·lb |
Cylinder head bolt | 25 Nm; 2.5 kg·m; 17 ft·lb |
Flywheel nut | 64 Nm; 6.5 kg·m; 47 ft·lb |
Rocker arm lock nut | 7 Nm; 0.7 kg·m; 6 ft·lb |
Crankcase cover | 10 Nm; 1.0 kg·m; 7 ft·lb |
Oil drain plug | 32 Nm; 3.3 kg·m; 24 ft·lb |
Spark plug | 23 Nm; 2.3 kg·m; 17 ft·lb |
Service Information
Engine | |
Maximum speed | 4,000 ± 100 rpm |
Idle speed | 1,600 ± 150 rpm |
Cylinder compression | 3.0-4.0 kg/cm2 (42-57 psi) at 600 rpm |
Valve clearance | |
Intake valve clearance | 0.12 mm (0.0047 in) |
Exhaust valve clearance | 0.12 mm (0.0047 in) |
Oil system | |
Oil type | 4-stroke or an equivalent (SF, SG, SH, or SJ) |
Recommended oil | SAE 10W-30 |
Oil capacity | 0.6 L (0.63 US. qt, 0.53 Imp. qt.) |
Ignition system | |
Spark plug | NGK: BP5ES |
Spark plug gap | 0.7-0.8 mm (0.028-0.031 in) |
Ignition coil air gap | 0.3 mm (0.012 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.
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