Kawasaki FA76D

Kawasaki FA76DThe Kawasaki FA76D is a 76 cc, (4.64 cu·in) natural aspirated single-cylinder four-stroke air-cooled internal combustion small gasoline engine with a horizontal shaft, manufactured by Kawasaki Heavy Industries LTd. for general-purpose applications.

A 52.0 mm (2.05 in) cylinder bore and 36.0 mm (1.42 in) piston stroke give the FA76D engine a total of 76 cc of displacement. The compression ratio rating is 6.4:1.

The FA76D engine produced 1.7 PS (1.25 kW; 1.7 HP) at 4,000 rpm of maximum horsepower and 3.1 N·m (0.3 kg·m, 2.3 ft·lb) at 3,200 rpm of maximum torque.

The Kawasaki FA76D features:

  • One piece hypereutectic aluminum-silicon alloy die casting with plateau honing cylinder and crankcase
  • Hard-chrome plated aluminum alloy piston
  • Two compression rings including silicon carbide (on an iron base) plated top ring, and one oil control ring.
  • I-beam cross section, heat treated aluminum alloy connecting rod, with large bearings
  • Heat treated ductile iron crankshaft, integrated with counterbalance weights and camshaft drive gear
  • Forged 21 -4N austenitic stainless steel exhaust valve and forged heat-resisting steel intake valve
  • Magneto ignition with waterproof molded ignition coil. Breaker system standard or electronic ignition system (optional)
  • Pulse pump carburetor or float carburetor
  • Mechanical fly-weight typel governor
  • Splash type lubrication system
  • Forced air cooling system with large capacity, curved vane blower casting, integrated with flywheel
  • Recoil starter

General information

Engine Specifications
Engine model FA76D
Engine type 4-stroke, single-cylinder
Displacement 76 cm3, (4.64 cu·in)
Max. horsepower 1.7 PS (1.25 kW; 1.7 HP) at 4,000 rpm
Max. torque 3.1 N·m (0.3 kg·m, 2.3 ft·lb) at 3,200 rpm
Cooling system Forced air
Air cleaner Semi-dry type
Lubricating system Splash type
Ignition system Magneto type. Breaker system standard or electronic ignition system (optional)
Fuel system Pulse pump carburetor or float carburetor
Fuel consumption 330 g/HPh
Fuel tank capacity Pulse pump carburetor: 1.15 liters (1.22 US.qts, 1.01 Imp. qts)
Float carburetor: 1.7 liters (1.8 US.qts, 1.5 Imp. qts)
Fuel used Unleaded gasoline (octane number 86 or higher)
Starting system Recoil starter
Stoping system Ignition primary circuit ground
Governor Mechanical fly-weight
PTO shaft rotation Counterclockwise (from PTO shaft side)
Dimensions (L x W X H)
Dry weight 7.3 kg (16.1 lbs)

Cylinder Block and Head

Cylinder block
Compression ratio: 6.4:1
Cylinder bore: 52.0 mm (2.05 in)
Piston stroke: 36.0 mm (1.42 in)
Cylinder internal diameter (max): 52.070 mm (2.05 in)
Number of piston rings (compression / oil): 2/1
Clearance between piston and cylinder: 0.200 mm (0.0078 in)
Clearance between ring and ring groove (Top): 0.150 mm (0.0059 in)
Clearance between ring and ring groove (Second): 0.150 mm (0.0059 in)
Clearance between ring and ring groove (Oil): 0.150 mm (0.0059 in)
Ring end gap (Top): 0.100 mm (0.0039 in)
Ring end gap (Second): 0.100 mm (0.0039 in)
Ring end gap (Oil): 0.100 mm (0.0039 in)
Number of main bearings: 2
Clearance between piston and piston pin: 0.05 mm (0.0020 in)
Connecting rod big end side play: 0.70 mm (0.0277 in)
Clearance between connecting rod small end and piston pin: 0.10 mm (0.0040 in)
Clearance between crankshaft and bearing (Bush type): 0.13 mm (0.0051 in)
Crankshaft axial play: 0.60 mm (0.0237 in)
Crankpin journal diameter: 19.950 mm (0.7854 in)
Cylinder head
Valves: 2
Clearance between camshaft and bearing (Bush type): 0.10 mm (0.0040 in)
Cam lift (INTAKE): 17.35 mm (0.6830 in)
Cam lift (EXHAUST): 17.35 mm (0.6830 in)
Valve spring free length (INTAKE): 20.50 mm (0.8071 in)
Valve spring free length (EXHAUST): 20.50 mm (0.8071 in)
Clearance between stem and valve guide: 0.15 mm (0.0060 in)
Clearance between tappet and valve tappet: 0.10 mm (0.0040 in)
Camshaft axial play: 0.60 mm (0.0237 in)

Tightening torque

Tightening torque specs
Cylinder head 7 Nm; 0.7 kg·m; 5.2 ft·lb
Connecting rod 7 Nm; 0.7 kg·m; 5.2 ft·lb
Flywheel 35 Nm; 3.5 kg·m; 25.8 ft·lb
Drain plug 14 Nm; 1.4 kg·m; 10.3 ft·lb

Service Data

Engine
Maximum speed: 4,000 rpm
Idle speed: 1,500-1,6000 rpm
Valve clearance
Intake valve clearance: 0.10-0.20 mm (0.0040-0.0080 in)
Exhaust valve clearance: 0.10-0.30 mm (0.0040-0.0120 in)
Oil system
Lubrication system: Splash type
Oil type: API SC, SD, SE
Recommended oil: 10W-30, 10W-40
Oil capacity: 0.32 L (0.34 US. qt, 0.28 Imp. qt.)
Fuel system
Type: Pulse pump type carburetor with idle mixture adjustment
Pilot air screw initial setting: Unscrew 1 turn
Type: Float type carburetor anti-erosion aluminum alloy, with idle mixture adjustment and fuel shut off valve
Fuel cock opening: Unscrew 1-1/2 turns
Pilot air screw initial setting: Unscrew 1-1/4 turns
Ignition system
Type: Magneto with waterproof molded ignition coil and dustproof breaker point enclosure. Breaker system (standard) or electronic ignition system (optional)
Ignition timing: 23° B.T.D.C. (Fixed)
Spark plug: NGK BM6A
Spark plug gap: 0.6-0.7 mm (0.0236-0.0276 in)
Ignition coil air gap 0.3-0.5 mm (0.0118-0.0197 in)

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