Kawasaki FS730V-EFI

Kawasaki FS730V-EFIThe Kawasaki FS730V-EFI is a 0.73 l (726 cc, 44.3 cu-in) V-twin 90° air-cooled 4-stroke internal combustion small gasoline engine with vertical shaft, manufactured by Kawasaki Heavy Industries LTd., for general-purpose applications, such as zero-turn riders, lawn and garden tractors and wide-area walk-behind mowers.

The FS730V-EFI has 90 degrees V-twin design with vertical PTO shaft, overhead V-valves, cast iron cylinder liners, spherical combustion chamber, proven open-loop design, clean-out ports. The engine is equipped with electronic altitude compensation, sequential multiport fuel injection system, integrated electronic governor, compact electronic control unit, integrated throttle body, and ECU and electronic controlled ignition timing system. The motor uses a high-performance lubrication system, high-pressure fuel injection system with an electronic fuel pump and dual-element air filter.

Bore and stroke are 78.0 mm (3.07 in) and 76.0 mm (2.99 in), respectively. Compression ratio rating is 8.1:1. The Kawasaki FS730V-EFI produced 24.1 PS (17.7 kW; 23.7 HP) at 3,600 rpm or 25.8 PS (19.0 kW; 25.5 HP) at 3,600 rpm of maximum horsepower and 53.4 Nm (5.4 kg·m; 39.4 ft·lb) at 2,400 rpm or 54.2 Nm (5.5 kg·m; 40.0 ft·lb) at 2,400 rpm of torque.

General information

Engine Specifications
ModelFS730V-EFI
Type4-stroke, OHV, V-twin 90°
Displacement726 cm 3 (44.3 cu-in)
Max. horsepower 24.1 PS (17.7 KW; 23.7 HP) at 3,600 rpm
25.8 PS (19.0 KW; 25.5 HP) at 3,600 rpm
Max. torque (crank PTO) 53.4 Nm (5.4 kg·m; 39.4 ft·lb) at 2,400 rpm
54.2 Nm (5.5 kg·m; 40.0 ft·lb) at 2,400 rpm
Fuel systemSequential multiport fuel injection
Cooling systemAir-cooling
Ignition systemElectronic controlled ignition timing system
Lubricating systemFull pressure with spin-on oil filter
Starting systemElectric starter
Charging system13A or 20A charge coil (option)
Fuel usedUnleaded gasoline (octane number 86 or higher)
Fuel consumption
Cooling systemPressurized forced circulation type

Dimensions and Weight

Kawasaki FS730V-EFI
Length, mm (in)507 (20.0)
Width, mm (in)466 (18.3)
Height, mm (in)409 (16.1)
Dry weight, kg (lb)46.5 (102.5)

Maintenance data

Engine
Maximum speed3500 ± 100 rpm
Idle speed1500 ± 100 rpm
Cylinder compression4.5 kg/cm2 (64 psi) at 500 rpm
Oil system
Oil type4-stroke or an equivalent (SJ or higher class)
Recommended oilSAE 10W-40, 10W-30
Oil capacity (with filter changed) With oil filter: 2.1 litre
Without oil filter: 1.8 litre
Ignition system
Spark plugNGK: BPR4ES
Spark plug gap0.7-0.8 mm (0.027-0.031 in)
Ignition coil air gap0.2-0.4 mm (0.008-0.011 in)
Spark plug tightening torque22 Nm; 2.2 kg·m; 16.2 ft·lb
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