Kawasaki FC401V

Kawasaki FC401VThe Kawasaki FC401V is a 423 cc (25.81 cu-in) single-cylinder air-cooled 4-stroke internal combustion small gasoline engine with vertical shaft manufactured by Kawasaki Heavy Industries LTd., for general-purpose applications.

The FC401V engine has an OHV (overhead valve) design; cast-iron cylinder liner; reciprocating balancer; float type carburetor with fixed main jet; flywheel magneto transistor type ignition system; mechanical governor; low tone muffler; recoil starter with an automatic compression release. The engine uses semi cyclone type air cleaner with a dual element and pressurized lubrication system.

Optionally, the engine could be equipped with 12V solenoid shift starter; charging coil; alternator for an electric clutch; carburetor with fuel shut-off solenoid; oil pressure switch; oil drain extension; separated choke from throttle and pulse type fuel pump.

It has an 89.0 mm (3.5 in) cylinder bore and 68.0 mm (2.68 in) piston stroke. Compression ratio rating is 8.4:1. The Kawasaki FC401V motor produced 13.2 PS (9.7 KW; 13.0 HP) at 3,600 rpm of horsepower and 29.2 Nm (2.98 kg·m; 21.55 ft·lb) at 2,200 rpm of torque.

General information

Engine Specifications
Type4-stroke, OHV, single cylinder
Displacement423 cm 3 (25.81 cu-in)
Max. horsepower13.2 PS (9.7 KW; 13.0 HP) at 3,600 rpm
Max. torque29.2 Nm (2.98 kg·m; 21.55 ft·lb) at 2,200 rpm
CarburetorFloat type with fixed main jet
Cooling systemForced-air
Ignition systemFlywheel magneto transistor type
Lubricating systemPressurized
Starting systemRecoil or electric starter
Fuel usedUnleaded gasoline (octane number 86 or higher)
Fuel tank capacity
Fuel consumption
PTO shaft rotationCounterclockwise (from PTO shaft side)

Dimensions and Weight

Kawasaki FC401V
Length448 mm (17.6 in)
Width453 mm (17.8 in)
Height358 mm (14.0 in)
Dry weight35.2 kg (77.5 lbs)

Service Information

Maximum speed3,300 ± 100 rpm
Idle speed1,500 ± 150 rpm
Cylinder compression5.0 kg/cm2 (70 psi)
Valve clearance
Intake valve0.15 mm (0.006 in)
Exhaust valve0.15 mm (0.006 in)
Oil system
Oil type4-stroke or an equivalent (SF, SE, SD)
Recommended oilSAE 10W-30, 10W-40
Oil capacity1.3 L (1.4 US. qt)
Ignition system
Spark plug gap0.7-0.8 mm (0.028-0.031 in)
Ignition coil air gap0.3 mm (0.012 in)

Tightening torque specs

Tightening torque specs
Cylinder head52 Nm; 5.2 kg·m; 38.3 ft·lb
Connecting rod20 Nm; 2.0 kg·m; 14.7 ft·lb
Flywheel137 Nm; 14 kg·m; 101 ft·lb
Crankcase cover26 Nm; 2.6 kg·m; 19.2 ft·lb
Oil drain plug23 Nm; 2.3 kg·m; 16.7 ft·lb
Valve clearance lock nut20 Nm; 2.0 kg·m; 14.7 ft·lb
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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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.


  1. I have a ferris mower with a kawasaki FC401V 14 hp 423 cc that seized up on me. Im looking to replace it. What other brands can substitute for this vertical shaft engine?

  2. I have a Kubota T1560 with Kawasaki FC401V and have worn it out. Need a replacement Kawasaki or other brand that will work. Any one got a solution for a engine?

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