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Kawasaki FD750D Engine
General Technical Data
Kawasaki FD750D Engine Specifications
Engine Model ............... Kawasaki FD750D
Engine Type ............... Liquid-cooled, 4-stroke, Horizontal shaft,
OHV gasoline
Number of Cylinders ............... 2
Cylinder Layout ............... 90 deg, V-Twin
Cylinder Liners ............... Cast iron
Displacement, L (cu in) ............... 0.745 (45.5)
Engine Bore, mm (in) ............... 78.0 (3.07)
Engine Stroke, mm (in) ............... 78.0 (3.07)
Maximum Horse Power, hp (kW) ............... 27.0 (20.2)
Rated Engine Speed, rpm ............... 3600
Maximum Torque, Nm (ft-lbs) ............... 58.3 (43.0)
Torque Speed, rpm ............... 2400
Fast Idle Speed, rpm ............... 3550
Slow Idle Speed, rpm ............... 1550
Lubrication System ............... Pressure feed by positive
displacement pum
Oil Filter ............... Cartridge type full flow
Cooling System ............... Pressurized forced circulation type
Ignition System ............... Transistorized-fly wheel magneto
Spark Plug ............... NGK BMR4A
Starting System ............... Electric starter
Starter ............... Electric, shift type
Charging System ............... 12V-20A with regulator
Fuel System
Fuel System ............... Carburetor
Carburetor ............... Float type, fixed main jet
Fuel Pump ............... Electro magnetic
Fuel ............... Unleaded gasoline (octane number 86 or higher)
Governor ............... All speed mechanical fly weights
Air Cleaner ............... Dual stage element
Dimensions
Length, mm (in) ............... 580 (22.8)
Width, mm (in) ............... 458 (17.9)
Height, mm (in) ............... 520 (20.5)
Net Weight, kg (lbs) ............... 58.0 (128.0)
Kawasaki FD750D Maintenance Data
Cylinder Block and Valves
Cylinder Bore (Maximum), mm (in) ............... 78.07 (3.0858)
Cylinder Compression (Minimum), kPa ............... 737
Intake Valve Clearance (Cold), mm (in) ............... 0.15 (0.0059)
Exhaust Valve Clearance (Cold), mm (in) ............... 0.15 (0.0059)
Engine Oil and Filter
Engine Oil Type ............... SAE 10W-40, 10W-30, 5W-20
Oil Classification ............... SC, SD, SE, SF, SG, or SH
Oil Capacity (w/o Filter), L (qts) ............... 1.8 (1.9)
Oil Capacity (with New Filter), L (qts) ............... 2.0 (2.1)
Oil Filter ............... Cartridge type full flow
Ignition System
Plug Type ............... NGK BPR2ES
Plug Gap, mm (in) ............... 0.75 (0.0296)
Ignition Coil Air Gap, mm (in) ............... 0.25-0.40 (0.0099-0.0158)
Ring End Gap (Maximum), mm (in) ............... 0.7 (0.0277)
Service Intervals
Change Engine Oil ............... Every 100 hours
Change Oil Filter ............... Every 200 hours
Clean and Re-gap Spark Plug ............... Every 100 hours
Replace Spark Plug ............... Every 300 hours
Clean Air Cleaner Paper Element ............... Every 100 hours
Replace Air Cleaner Paper Element ............... Every 300 hours
Check Carburetor Adjustment ............... Every 50 hours
Check and Adjust Valve Clearance ............... Every 300 hours
Change Coolant ............... Every 400 hours
Kawasaki FD750D Service Data
Caburetor Specifications
Caburetor Model ............... Mikuni BW26
Throttle Bore Diameter, mm (in) ............... 26.0 (1.02)
Venturi Diameter, mm (in) ............... 21.0 (0.83)
Main Jet (R/L) ............... #120 / #115
Pilot Jet (R/L) ............... #50 / #46.3
Main Air Jet ............... 1.7
Pilot Air Jet ............... 1.2
Pilot Air Screw Turns Out (L/R) 2-7/8 / 3-11/16
Float Level ............... Float parallel to carburetor body
Low Idle Speed, rpm ............... 1550 ± 100
High Idle Speed, rpm ............... 3600 ± 100
Cooling System
Coolant Type ............... Permanent type of antifreeze for aluminum
engine and radiator
Coolant Mixed Ratio ............... 50% solution of ethylene glycol
Coolant Capacity, L (qts) ............... 2.7 (2.9)
Radiator Cap Relief Pressure (Max), kPa (psi) ............... 78-98
(11.3-14.2)
Radiator Cap Relief Pressure (Min), kPa (psi) ............... 4.90
(0.71)
Thermostat Valve Openning Temperature, C (F) ............... 80.5-83.5
(177-182)
Thermo Switch Detect Temerature, C (F) ............... 108-114 (226-237)
Cylinder Block
Cylinder head warp, mm (in) ............... 0.06 (0.002)
Cylinder inside diameter (Std), mm (in) ............... 78.080 (3.0740)
Cylinder inside diameter (0.5mm oversize), mm (in) ...............
78.580 (3.0937)
Cylinder bore out round, mm (in) ............... 0.056 (0.0022)
Cylinder bore diameter (Std), mm (in) ............... 78.000-77.980
(3.0709-3.0701)
Cylinder bore diameter (0.5mm oversize), mm (in) ...............
78.500-78.480 (3.0905-3.0898)
Top ring groove clearance, mm (in) ............... 0.15 (0.0059)
Second ring groove clearance, mm (in) ............... 0.15 (0.0059)
Top ring thickness, mm (in) ............... 1.40 (0.055)
Second ring thickness, mm (in) ............... 1.40 (0.055)
Piston ring end gap (Top and second ring), mm (in) ............... 1.0
(0.04)
Piston ring end gap (Oil ring), mm (in) ............... 1.2 (0.05)
Piston pin outside diameter, mm (in) ............... 18.960 (0.7465)
Piston pin hole inside diameter, mm (in) ............... 19.080 (0.7512)
Connecting rod small end inside diameter, mm (in) ............... 19.060
(0.7504)
Piston outside diameter, mm (in) ............... 77.700 (3.0590)
Valves
Valve head thickness (Intake, Exhaust), mm (in) ............... 0.6
(0.024)
Valve stem bend (Intake, Exhaust), mm (in) ............... 0.05 (0.002)
Valve stem diameter (Intake, Exhaust), mm (in) ............... 6.935
(0.2730)
Valve guide inside diameter (Intake, Exhaust), mm (in) ...............
7.080 (0.2787)
Valve spring free length (Intake, Exhaust), mm (in) ...............
31.00 (1.22)
Rocker arm push rod runout (Intake, Exhaust), mm (in) ...............
0.50 (0.02)
Rocker arm collar outside diameter (Intake, Exhaust), mm (in)
............... 10.914 mm (0.4297 in)
Rocker arm bearing inside diameter (Intake, Exhaust), mm (in)
............... 11.052 mm (0.4351 in.)
Valve clearance (Intake, Exhaust), mm (in) ............... 0.15 (0.006)
Valve seating surface angle (Intake, Exhaust), degrees ...............
45
Valve seating surface width (Intake), mm (in) ............... 0.5-1.1
(0.02-0.043 in.)
Valve seating surface width (Exhaust), mm (in) ............... 0.5-1.1
(0.02-0.043)
Valves guide inside diameter (Intake, Exhaust), mm (in) ...............
7.000-7.015 (0.2756-0.2762)
Kawasaki FD750D Tightening Torque Specs
Cylinder Head, Nm (ft-lbs) ............... 27 (20)
Connecting Rod, Nm (ft-lbs) ............... 21 (15.5)
Flywheel, Nm (ft-lbs) ............... 56 (41.1)
Crankcase Cover, Nm (ft-lbs) ............... 22 (16.2)
Intake Manifold, Nm (ft-lbs) ............... 12 (9.1)
Oil Drain Plug, Nm (ft-lbs) ............... 25 (18.5)
Spark Plug, Nm (ft-lbs) ............... 25 (18.6)
Valve Clearance Lock Nut, Nm (ft-lbs) ............... 11 (8.1)
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