Kawasaki FS651V

Kawasaki FS651VThe Kawasaki FS651V 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 FS651V has 90 degrees V-twin design with vertical PTO shaft, overhead V-valves, cast iron cylinder liners, and spherical combustion chamber. The engine is equipped with the electronic spark ignition system, internally vented carburetor with fuel shut-off solenoid, rotating grass chopper screen, integrated clean out ports. The motor uses a high-performance lubrication system and dual-element air filter.

The engine has an automatic compression release (ACR) system with bendix type starter. 13A or 20A charge coils, muffler, oil pressure switches, various oil drains are available as an option.

It has a 78.0 mm (3.07 in) cylinder bore and 76.0 mm (2.99 in) piston stroke. Compression ratio rating is 8.2:1. The Kawasaki FS651V produced 19.2 PS (14.1 kW; 18.8 HP) at 3,600 rpm or 22.3 PS (16.4 kW; 22.0 HP) at 3,600 rpm of maximum horsepower and 53.2 Nm (5.4 kg·m; 39.3 ft·lb) at 1,800 rpm or 53.3 Nm (5.4 kg·m; 39.3 ft·lb) at 2,000 rpm of torque.

[adv-links-1]

General information

Engine Specifications
ModelFS651V
Type4-stroke, OHV, V-twin 90°
Displacement726 cm 3 (44.3 cu-in)
Max. horsepower 19.2 PS (14.1 KW; 18.8 HP) at 3,600 rpm
22.3 PS (16.4 KW; 22.0 HP) at 3,600 rpm
Max. torque (crank PTO) 53.2 Nm (5.4 kg·m; 39.3 ft·lb) at 1,800 rpm
53.3 Nm (5.4 kg·m; 39.3 ft·lb) at 2,000 rpm
CarburetorInternally vented with fuel shut-off solenoid
Cooling systemAir-cooling
Ignition systemElectronic spark ignition
Lubricating systemFull pressure with spin-on oil filter
Starting systemBendix type 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 FS651V
Length, mm (in)500 (19.7)
Width, mm (in)471 (18.5)
Height, mm (in)391 (15.4)
Dry weight, kg (lb)41.0 (90.4)

Tightening torque specs

Tightening torque specs
Cylinder head46 Nm; 4.6 kg·m; 33.9 ft·lb
Connecting rod10 Nm; 1.0 kg·m; 7.4 ft·lb
Flywheel56 Nm; 5.7 kg·m; 41.3 ft·lb
Crankcase cover27.5 Nm; 2.75 kg·m; 20.3 ft·lb
Intake manifold9 Nm; 0.9 kg·m; 6.6 ft·lb
Oil drain plug7 Nm; 0.7 kg·m; 5.2 ft·lb
Valve clearance lock nut11 Nm; 1.1 kg·m; 8.1 ft·lb

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
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.

Be the first to comment

Leave a Reply

Your email address will not be published.


*