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
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)

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)

Tightening torque specs

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

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
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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  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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