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81 KZ305-A1: CSR


Kawasaki Part Cross Reference Software contains information for this bike.
Model Identification
Color 1- Ebony 2- Candy Permission Red
VIN Range JKAKZLA1eBA000001 - 009600
Engine number range KZ305AE000001 - 010100, found on RH top crankcase, below carburetor.
Cylinder Mark 0.306l found on front center, above base
Engine
Engine Type 4 stroke, 2 - cylinder, SOHC, air cooled.
Displacement 306cc
Bore X Stroke 61.0 X 52.4 mm
Compression Ratio 9.5:1
Maximum HP 30 at 9000 rpm
Maximum torque 2.5 kg-m at 7000 rpm
Carburetor Keihin CV32 (2), constant velocity, diaphragm type
Ignition System 12 Battery & coil, contact breaker
Ignition Advance Mechanical (centrifugal)
Transmission Crankshaft Rotation Counterclockwise from ignition (LH) side
Clutch Type Wet, multi-disc, Manual Firing Interval 180°
Transmission 6-speed,constant mesh, return shift Cylinder Material Aluminum alloy with ferrous sleeve
Shift Pattern (bottom Up) 1-N-2-3-4-5-6 (w/neutral finder) Fuel Min 91 Research/87 average oct, unleaded OK
Gear ratios 1st 2.60 (39/15) Tuning Specifications
2nd 1.79 (34/19) Engine
3rd 1.41 (31/22) Cylinder Head Torque Head Nuts In sequence 1- 2.0 kg/m 2- 2.5 kg/m
4th 1.16 (29/25) Cover Bolts 3- 6Ø: 1.0 kg/m 4- 8Ø: 2.5 kg/m 4- Warm up 6- Retorque cold
5th 1.00 (27/27) Valve Clearance Cold Intake 0.14 - 0.19 mm
6th 0.89 (25/28) Exhaust 0.21 - 0.26 mm
Primary Ratio 3.74 (71/19) Valve Adjustment Method Rocker arm screw
Final Ratio 2.20 (33/15) Compression Pressure 7.7 - 11.0 kg/cm² usable range
Overall Ratio (Top Gear) 7.34 Spark Plug NGK D9EA 0.6 - 0.7 mm gap
Chassis Point Gap 0.35 ± 0.05 mm
Wheelbase 1355 mm Ignition Timing Idle 10° BTDC ("F" mark) at 1,250 rpm
Seat Height 750 mm Full 40° BTDC (in double marks) at 2,500 rpm
Ground Clearance 150 mm Air Screw Sealed - not adjustable
Dry Weight 152 kg Idle Speed 1250 ± 50 rpm
Max Recommended Load 155 kg Engine Oil SE Class SAE 10W40, 10W50, 20W40, 20W50
Fuel Tank Capacity 10.5 liters - w/filter change 1.8 liter
Tire Size Front 3.00S-18 4PR Tube-Type - no filter change 1.5 liter
Rear 120/90-16 63S Tube-Type - Level On center stand, wait 5 min, middle of window.
Brake Type Front Single hydraulic disc - Oil Pump Check Remove oil galley plug above LH spark plug, with engine idling, oil should flow from galley.
Rear Mechanical Drum (Leading/Trailing) Chassis
Brake Size Front 226 mm effective diameter Fork Oil SAE 5W20 (equiv. to SS8 or G0)
Rear 160 X 30 mm - Capacity 150cc dry, approx ? cc oil change
Suspension Stroke Front 150 mm - Level 480 ± 2 (Fork extended, spring removed)
Rear 105 mm (wheel travel) Tire Pressure (cold) Front 1.75 kg/cm²
  Rear (normal) 1.50 kg/cm² (0 - 97.5 kg)
Rear (heavy) 2.00 kg/cm² (97.5 - 155 kg)
Chain Slack 25 - 30 mm (on center stand, tightest point, STDs)

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