Kawasaki FX730V-EFI

Kawasaki FX730V-EFIThe Kawasaki FX730V-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, commercial mowers, heavy-duty industrial and construction equipment.

The Kawasaki FX730V EFI engine has V-twin design with vertical PTO shaft. The motor uses overhead V-valves; spherical combustion chamber; cast-iron cylinder liners; metal engine cover with integrated cleanout ports; rotating metal grass chopper screen. The engine is equipped with sequential multiport fuel injection; integrated throttle body and ECU; integrated electronic governor and electronic controlled ignition timing. The motor uses a high-performance lubrication system; double or multi-stage canister air filter and returnless high-pressure fuel system.

The engine has an automatic compression release (ACR) system with recoil or heavy-duty shift-type starter. 13A or 20A charge coils, muffler, oil pressure switches, and shaft variations are available as an option.

Cylinder bore and piston stroke are 78.0 mm (3.07 in) and 76.0 mm (2.99 in), respectively. Compression ratio rating is 8.2:1. The FX730V-EFI engine produced 23.4 PS (17.2 kW; 23.1 HP) at 3,600 rpm or 25.8 PS (19.0 kW; 25.5 HP) at 3,600 rpm of maximum horsepower and 53.6 Nm (5.5 kg·m; 39.6 ft·lb) at 2,400 rpm or 54.6 Nm (5.6 kg·m; 40.3 ft·lb) at 2,800 rpm of torque.

General information

Engine Specifications
ModelFX730V-EFI
Type4-stroke, OHV, V-twin 90°
Displacement726 cm 3 (44.3 cu-in)
Max. horsepower 23.4 PS (17.2 KW; 23.1 HP) at 3,600 rpm
25.8 PS (19.0 KW; 25.5 HP) at 3,600 rpm
Max. torque (crank PTO) 53.6 Nm (5.5 kg·m; 39.6 ft·lb) at 2,400 rpm
54.6 Nm (5.6 kg·m; 40.3 ft·lb) at 2,800 rpm
Fuel systemSequential multiport fuel injection
Cooling systemAir-cooling
Ignition systemElectronic controlled ignition timing
Lubricating systemHigh performance lubrication system
Starting systemHeavy duty shift type starter
Charging system13A or 20A charge coil (option)
Fuel usedUnleaded gasoline (octane number 91 or higher)
Fuel consumption
Cooling systemPressurized forced circulation type

Dimensions and Weight

Kawasaki FX730V-EFI
Length, mm (in)511 (20.1)
Width, mm (in)465 (18.3)
Height, mm (in)587 (23.1)
Dry weight, kg (lb)50.1 (110.5)

Maintenance data

Engine
Maximum speed3500 ± 100 rpm
Idle speed1500 ± 100 rpm
Cylinder compression4.5 kg/cm2 (64 psi) at 500 rpm
Valve clearance
Intake valve0.10-0.15 mm (0.004-0.006 in)
Exhaust valve0.10-0.15 mm (0.004-0.006 in)
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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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.

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