Kawasaki FB460V: 460 cc (12.5 HP) Vertical Shaft Engine Specs and Review

Kawasaki FB460V Engine Specs

The Kawasaki FB460V is a 0.46 l (28.1 cu-in,460 cc) air-cooled single-cylinder four-stroke internal combustion small gasoline (petrol) engine with a vertical shaft by Kawasaki Heavy Industries Ltd. for general-purpose use.

The FB460V engine has an L-shaped head with two valves, a transistorized flywheel magneto ignition system, a float-type carburetor with a fixed main jet, and a mechanical governor.

The engine had a pressurized lubrication system, a semi-cyclone air cleaner with two elements, and an electric or recoil starter. Model engines with an electric starter also have a 12V-13A charging coil with a regulator.

The piston stroke is 74.0 mm (2.91 in), and the piston bore is 89.0 mm (3.5 in). The compression ratio is 6.4:1. At 3,600 rpm, the Kawasaki FB460V motor produces 12.5 HP; at 2,300 rpm, it makes 28.0 Nm (2.8 kgm, 20.1 ftlb).

Kawasaki FB460V Engine Specs

Kawasaki FB460V: 460 cc (12.5 HP) Vertical Shaft Engine Specifications

Engine Specifications

Type4-stroke, L-head, single cylinder
Displacement460 cm 3 (28.1 cu-in)
Max. horsepower12.5 HP at 3,600 rpm
Max. torque28.0 Nm (2.8 kg·m, 20.1 ft·lb) at 2,300 rpm
CarburetorFloat type
Cooling systemForced-air
Ignition systemTransistorized magneto ignition
Lubricating systemPressure and splash
Starting systemRecoil or electric starter
Stoping systemIgnition primary circuit ground
Fuel usedUnleaded gasoline (octane number 86 or higher)
Fuel tank capacity
Fuel consumption313 g/kWh (230 g/HPh, 0.51 lb/HPh)
PTO shaft rotationCounterclockwise (from PTO shaft side)

Maintenance Data

Maximum speed3300 ± 150 rpm
Idle speed1400 ± 150 rpm
Cylinder compressionnot be less then 3.0 kg/cm2 (43 psi) at 600 rpm
Valve tappet clearance (Cold)
Intake valve0.10-0.16 mm (0.004-0.006 in)
Exhaust valve0.10-0.16 mm (0.004-0.006 in)
Main jet#112.5
Pilot jet#47.5
Float valve1.5 mm (0.06 in)
Pilot screw1-1/8 turns out
Main jet#115
Pilot jet#47.5
Float valve1.5 mm (0.06 in)
Pilot screw1-1/8 turns out
Oil system
Oil type4-stroke or an equivalent (SD, SE, SE/CC, SF)
Recommended oilSAE 5W-20
Oil capacity1.4 L (2.96 US pt.)
Ignition system
Spark plugNGK: BMR-4A
Spark plug gap0.6-0.7 mm (0.024-0.028 in)
Tightening torque28 Nm; 2.8 kg·m; 20.6 ft·lb

Tightening torque specs

Connecting rod cap19-20 Nm; 1.9-2.0 kg·m; 14-15 ft·lb
Cylinder head34-39 Nm; 3.4-3.9 kg·m; 25-29 ft·lb
Flywheel nut83-88 Nm; 8.3-8.8 kg·m; 62-65 ft·lb
Spark plug28 Nm; 2.8 kg·m; 20.6 ft·lb

Dimensions and Weight

 Electric starterRecoil starter
Length419 mm (16.50 in)511 mm (20.12 in)
Width381 mm (15.0 in)365 mm (14.37 in)
Height307 mm (12.08 in)356 mm (14.0 in)
Dry weight36.0 kg (79.4 lbs)36.0 kg (79.4 lbs)

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Final Words

This concludes our discussion of the Kawasaki FB460V 460 cc (12.5 HP) Vertical Shaft Engine specs and review; however, if you have any questions regarding this article, please submit them in the comment section below. We will do our best to respond to you as soon as possible.

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