Kawasaki FH580V KAI

Kawasaki FH580V KAIThe Kawasaki FH580V KAI is a 0.59 l (585 cc, 35.7 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. The Kai’s are the newer series engine. The Japanese word “KAI” means evolution, advancement and renewal.

The FH580V KAI engine is based on the FH580V motor, but it uses redesigned air cleaner and blower housings, new air filter options, internally vented carburetor, an advanced lubrication system design, and enhancements for optimal stability.

The FH580V KAI has V-twin 90° design with vertical PTO shaft, cast-iron cylinder liners, and overhead V-valves. The engine is equipped with inner vent carburetor and electronic spark ignition system. The motor uses a full pressure lubrication system with spin-on oil filter and dual element air cleaner.

The engine has automatic compression release (ACR) system with recoil or electric starter (12V bendix starter with 12V-15A charging coil also available as an option).

It has a 74.0 mm (2.91 in) cylinder bore and 68.0 mm (2.68 in) piston stroke. Compression ratio rating is 8.5:1. The Kawasaki FH580V KAI produced 19.3 PS (14.2 kW; 19.0 HP) at 3,600 rpm of maximum horsepower and 49.6 Nm (5.06 kg·m; 36.6 ft·lb) at 2,000 rpm of torque.

General information

Engine Specifications
ModelFH580V KAI
Type4-stroke, OHV, V-twin 90°
Displacement585 cm 3 (35.7 cu-in)
Max. horsepower19.3 PS (14.2 KW; 19.0 HP) at 3,600 rpm
Max. torque (crank PTO)49.6 Nm (5.06 kg·m; 36.6 ft·lb) at 2,000 rpm
CarburetorInner vent carburetor
Cooling systemAir-cooling
Ignition systemElectronic spark ignition
Lubricating systemFull pressure with spin-on oil filter
Starting systemRecoil or electric starter
Charging system12V-15A charging coil with regulator
Fuel usedUnleaded gasoline (octane number 86 or higher)
Fuel consumption245 g/HPh
Cooling systemPressurized forced circulation type

Tightening torque specs

Tightening torque specs
Cylinder head25 Nm; 2.2 kg·m; 18.5 ft·lb
Connecting rod10 Nm; 1.0 kg·m; 7.4 ft·lb
Flywheel56 Nm; 5.7 kg·m; 41.3 ft·lb
Crankcase cover25 Nm; 2.2 kg·m; 18.5 ft·lb
Intake manifold6 Nm; 0.6 kg·m; 4.4 ft·lb
Valve clearance lock nut7 Nm; 0.7 kg·m; 5.1 ft·lb

Maintenance data

Maximum speed3500 ± 100 rpm
Idle speed1500 ± 100 rpm
Cylinder compression4.0 kg/cm2 (56 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 (SF, SG, SH, or SJ )
Recommended oilSAE 10W-40, 10W-30, 5W-20
Oil capacity (with filter changed)1.5-1.7 litre
Ignition system
Spark plugNGK: BPMR6A
Spark plug gap0.75 mm (0.029 in)
Spark plug tightening torque22 Nm; 2.2 kg·m; 16.2 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.

ATTENTION! Dear visitors, this site is not a trading platform, an official dealer or a spare parts supplier, so we do not have any price lists or spare parts catalogs. We are an information portal and provide the technical specifications of gasoline and diesel engines.

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 Comment

  1. Please help! We have a FH580v kai, or fh580VB84326 I’m in need of a head gasket and possibly a starter, can you help me??

Leave a Reply

Your email address will not be published.