Kawasaki FB460V

Kawasaki FB460VThe Kawasaki FB460V is a 0.46 l (460 cc, 28.1 cu-in) air-coolled single-cylinder four-stroke internal combustion small gasoline (petrol) engine with vertical shaft manufactured by Kawasaki Heavy Industries LTd., for general-purpose applications.

The FB460V engine has an L-head design with two valves; transistorized flywheel magneto ignition system; float type carburetor with fixed main jet and mechanical governor. The engine used a pressurized lubrication system; semi cyclone-type air cleaner with a dual element and electric or recoil starter. Engine models with the electric starter are also equipped with 12 volt – 13 A charging coil with a regulator.

Cylinder bore and piston stroke are 89.0 mm (3.5 in) and 74.0 mm (2.91 in), respectively. Compression ratio rating is 6.4:1. The Kawasaki FB460V motor produces 12.5 HP at 3,600 rpm and 28.0 Nm (2.8 kg·m, 20.1 ft·lb) at 2,300 rpm of torque.

General information

Engine Specifications
Model FB460V
Type 4-stroke, L-head, single cylinder
Displacement 460 cm 3 (28.1 cu-in)
Max. horsepower 12.5 HP at 3,600 rpm
Max. torque 28.0 Nm (2.8 kg·m, 20.1 ft·lb) at 2,300 rpm
Carburetor Float type
Cooling system Forced-air
Ignition system Transistorized magneto ignition
Lubricating system Pressure and 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
Fuel consumption 313 g/kWh (230 g/HPh, 0.51 lb/HPh)
PTO shaft rotation Counterclockwise (from PTO shaft side)

Dimensions and Weight

Electric starter Recoil starter
Length 419 mm (16.50 in) 511 mm (20.12 in)
Width 381 mm (15.0 in) 365 mm (14.37 in)
Height 307 mm (12.08 in) 356 mm (14.0 in)
Dry weight 36.0 kg (79.4 lbs) 36.0 kg (79.4 lbs)

Tightening torque specs

Tightening torque specs
Connecting rod cap 19-20 Nm; 1.9-2.0 kg·m; 14-15 ft·lb
Cylinder head 34-39 Nm; 3.4-3.9 kg·m; 25-29 ft·lb
Flywheel nut 83-88 Nm; 8.3-8.8 kg·m; 62-65 ft·lb
Spark plug 28 Nm; 2.8 kg·m; 20.6 ft·lb

Maintenance data

Maximum speed 3300 ± 150 rpm
Idle speed 1400 ± 150 rpm
Cylinder compression not be less then 3.0 kg/cm2 (43 psi) at 600 rpm
Valve tappet clearance (Cold)
Intake valve 0.10-0.16 mm (0.004-0.006 in)
Exhaust valve 0.10-0.16 mm (0.004-0.006 in)
Model FB460D-AS
Main jet #112.5
Pilot jet #47.5
Float valve 1.5 mm (0.06 in)
Pilot screw 1-1/8 turns out
Model FB460D-BS
Main jet #115
Pilot jet #47.5
Float valve 1.5 mm (0.06 in)
Pilot screw 1-1/8 turns out
Oil system
Oil type 4-stroke or an equivalent (SD, SE, SE/CC, SF)
Recommended oil SAE 5W-20
Oil capacity 1.4 L (2.96 US pt.)
Ignition system
Spark plug NGK: BMR-4A
Spark plug gap 0.6-0.7 mm (0.024-0.028 in)
Tightening torque 28 Nm; 2.8 kg·m; 20.6 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. Jeff here is a link to some John Deere branded items for this engine: https://www.greenpartstore.com/John-Deere-Model-GX95-Rear-Engine-Rider-Parts.html

    Oil Filter: John Deere Engine Oil Filter – AM107423
    Air filter: John Deere Paper Air Filter – AM101191 (will also need the foam pre-filter)

    As always, you can may find better pricing online or at your local dealer. My JD dealer usually stocks these items as my JD mower has this engine. I’ve also found compatible items on Amazon at decent prices.

  2. Does anyone know of a replacement engine for this one My 30 yr old FB460v is getting a bit tired.

    • Hi Roger, I have the exact same question for my Scag and was wondering if you got anywhere with it? Email me if you found an answer.
      Thanks, Bob

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