The Kawasaki FJ180D is a 0.18 l (179 cc, 10.9 cu-in) single-cylinder air-cooled 4-stroke internal combustion small gasoline engine with horizontal shaft manufactured by Kawasaki Heavy Industries LTd., for general-purpose applications.
The FJ180D engine has an OHV (overhead valve) design; spherical combustion chamber; cast iron cylinder liner; dual ball bearing main journals; K-Twin balancer; float type carburetor with fixed main jet; CDI ignition system; mechanical governor and recoil starter with an automatic compression release. The engine uses a dual-element air filter.
A 65.0 mm (2.56 in) cylinder bore and 54.0 mm (2.13 in) piston stroke give the motor a total of 179 cc of displacement. Compression ratio rating is 8.4:1. The Kawasaki FJ180D motor produced 5.6 PS (4.1 kW; 5.5 HP) at 3,600 rpm of maximum horsepower and 11.0 Nm (1.12 kg·m; 8.12 ft·lb) at 3,200 rpm of torque.
General information
Engine Specifications
Model
FJ180D
Type
4-stroke, OHV, single cylinder
Displacement
179 cm 3 (10.9 cu-in)
Max. horsepower
5.6 PS (4.1 KW; 5.5 HP) at 3,600 rpm
Max. torque (crank PTO)
11.0 Nm (1.12 kg·m; 8.12 ft·lb) at 3,200 rpm
Carburetor
Float type with fixed main jet
Cooling system
Forced-air
Ignition system
CDI
Lubricating system
Splash
Starting system
Recoil starter
Stoping system
Ignition primary circuit ground
Fuel used
Unleaded gasoline (octane number 86 or higher)
Fuel tank capacity
3.2 L
Fuel consumption
298 g/HPh
PTO shaft rotation
Counterclockwise (from PTO shaft side)
Dimensions and Weight
Kawasaki FJ180D
Length
304 mm (12.0 in)
Width
366 mm (14.4 in)
Height
370 mm (14.6 in)
Dry weight
17.5 kg (38.6 lbs)
Tightening torque specs
Tightening torque specs
Connecting rod bolt
9 Nm; 0.9 kg·m; 6.6 ft·lb
Cylinder head bolt
24 Nm; 2.4 kg·m; 17.7 ft·lb
Flywheel nut
42 Nm; 4.2 kg·m; 31 ft·lb
Valve clearance lock nut
11 Nm; 1.1 kg·m; 8.1 ft·lb
Crankcase cover
22 Nm; 2.2 kg·m; 16.2 ft·lb
Oil drain plug
32 Nm; 3.3 kg·m; 24 ft·lb
Spark plug
23 Nm; 2.3 kg·m; 17 ft·lb
Service Information
Engine
Maximum speed
4,000 ± 100 rpm
Idle speed
1,600 ± 150 rpm
Cylinder compression
3.0 kg/cm2 (42 psi) at 600 rpm
Valve clearance
Intake valve clearance
0.12 mm (0.0047 in)
Exhaust valve clearance
0.12 mm (0.0047 in)
Oil system
Oil type
4-stroke or an equivalent (SF, SG, SH, or SJ)
Recommended oil
SAE 10W-30
Oil capacity
0.55 L
Ignition system
Spark plug
NGK: BPR5ES
Spark plug gap
0.7-0.8 mm (0.028-0.031 in)
Ignition coil air gap
0.3 mm (0.012 in)
Author:Sergei WersAbout: 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.
The Kawasaki FJ180D is a 0.18 l (179 cc, 10.9 cu-in) single-cylinder air-cooled 4-stroke internal combustion small gasoline engine with horizontal shaft manufactured by Kawasaki Heavy Industries LTd., for general-purpose applications. 
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