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Home / Small Engines / Kawasaki Engines / Kawasaki FD620D

Kawasaki FD620D Specifications

Engine Model: Kawasaki FD620D

Engine Type: 4-cycle 2-cylinder liquid cooled gasoline engine

Total Displacement: 37.7 cu.in (617 cc)

Rated Engine Power: 18.7 Hp (14 kW)

Carburetor Type: Down draft, fixed main jet

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General Technical Data

Engine Model ............... Kawasaki FD620D
Engine Type ............... 4-cycle horizontal shaft overhead valve liquid-cooled gasoline engine
Number of Cylinders ............... 2
Cylinder Layout ............... 90 deg, V-Twin
Cylinder Liners ............... Cast iron
Displacement, cc (cu.in) ............... 617 (37.7)
Engine Bore, mm (in) ............... 76.0 (2.99)
Engine Stroke, mm (in) ............... 68.0 (2.68)
Maximum Horse Power, hp (kW) ............... 18.7 (14.0)
Rated Engine Speed, rpm ............... 3600
Maximum Torque, Nm (ft-lb) ............... 44.6 (32.9)
Torque Speed, rpm ............... 2200
Compression Ratio ............... 9.0:1
Lubrication System ............... Pressurised feed by positive displacement pump
Oil Filter Type ............... Cartridge, full flow
Air Cleaner Type ............... Dual stage element
Cooling System ............... Pressurized forced circulation type
Coolant Capacity, L (qts) ............... 2.7 (2.9)
Ignition System ............... Transistorized
Starting System ............... Shift type electric starter
Electrical System Rating, Volts ............... 12

Fuel System

Fuel System ............... Carburetor
Carburetor Type ............... Float (down draft) with fixed main jet
Fuel Pump Type ............... Electo magnetic
Governor Type ............... Mechanical
Fuel Filter Type ............... Replaceable paper element
Fuel Type ............... Gasoline (86 or higher)

Dimensions and Weight

Overall Length, mm (in) ............... 555 (21.9)
Overall Width, mm (in) ............... 450 (17.7)
Overall Height, mm (in) ............... 624 (24.6)
Net weight, kg (lbs) ............... 41.5 (91.6)

Cylinder Block

Cylinder Inside Diameter (Max), mm (in) ............... 76.067 (2.9948)
Cylinder Bore Out Round, mm (in) ............... 0.056 (0.0022)
Connecting Rod Bend, mm (in) ............... 0.15/100 (0.006/3.94)
Connecting Rod Big End Width, mm (in) ............... 21.2 (0.83)
Connecting Rod Big End Inside Diameter, mm (in) ............... 34.055 (1.3407)
Connecting Rod Small End Inside Diameter, mm (in) ............... 17.051 (0.6713)
Crankpin Width, mm (in) ............... 44.5 (1.75)
Crankpin Outside Diameter, mm (in) ............... 33.927 (1.3357)
Crankshaft Runout, mm (in) ............... 0.05 (0.002)
Crankshaft Journal Diameter (PTO), mm (in) ............... 33.91 (1.335)
Crankshaft Journal Diameter (Flywheel), mm (in) ............... 33.91 (1.335)
Crankshaft Bearing Inside Diameter, mm (in) ............... 34.114 (1.3431)
Camshaft Bearing Inside Diameter, mm (in) ............... 16.068 (0.6326)
Camshaft Journal Diameter (PTO), mm (in) ............... 15.907 (0.6263)
Camshaft Journal Diameter (Flywheel), mm (in) ............... 15.917 (0.6267)

Cylinder Head and Valves

Cylinder Head Warp, mm (in) ............... 0.05 (0.002)
Valve Clearance, mm (in) ............... 0.25 (0.010)
Valve Seat Angle, deg ............... 45
Valve Seat Width, mm (in) ............... 0.5-1.1 (0.02-0.043)
Valve Guide Inside Diameter, mm (in) ............... 6.00-6.012 (0.2362-0.2367)
Valve Head Thickness, mm (in) ............... 0.60 (0.024)
Valve Stem Runout, mm (in) ............... 0.05 (0.002)
Valve Stem Diameter (Intake), mm (in) ............... 5.945 (0.2341)
Valve Stem Diameter (Exhaust), mm (in) ............... 5.925 (0.2332)
Valve Guide Inside Diameter (Intake), mm (in) ............... 6.045 (0.2397)
Valve Guide Inside Diameter (Exhaust), mm (in) ............... 6.055 (0.2384)
Valve Spring Free Length (Intake, Exhaust), mm (in) ............... 29.7 (1.17)
Rocker Arm Push Rod Runout, mm (in) ............... 0.80 (0.03)
Cam Lobe Height (Intake), mm (in) ............... 25.21 (0.993)
Cam Lobe Height (Exhaust), mm (in) ............... 25.46 (1.002)

Piston and Piston Rings

Piston Pin Outside Diameter, mm (in) ............... 16.975 (0.6683)
Piston Pin Hole Inside Diameter, mm (in) ............... 17.041 (0.6709)
Top Ring Groove Clearance, mm (in) ............... 0.15 (0.006)
Second Ring Groove Clearance, mm (in) ............... 0.15 (0.006)
Top Ring Thickness, mm (in) ............... 1.12 (0.044)
Second Ring Thickness, mm (in) ............... 1.12 (0.044)
Top Ring End Gap, mm (in) ............... 1.2 (0.05)
Second Ring End Gap, mm (in) ............... 1.2 (0.05)
Oil Ring End Gap, mm (in) ............... 1.5 (0.06)

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