Yamaha Motorcycles
                     SR 500 1978
Engine
Configuration Air cooled 4-stroke, single cylinder S.O.H.C. (more) Lubrication Dry sump, trochoidal pump, oil in frame. 2.4 litres
Bore & Stroke 87 x 84 mm Ignition C.D.I. BP7ES or N-7Y
Capacity 499 cc Charging system (more)
Compression Ratio 9.0 : 1 Starter Kickstart
Maximum Power Transmission 44/16 530 103L + Joining link
Maximum Torque Gearbox 33/14 (2.357) 
28/18 (1.555) 
25/21(1.190) 
22/24 (0.916) 
21/27 (0.777)
Fuel VM34SS Mikuni (more) Clutch Wet multiplate (8 friction plates, 2.8mm thick, springs 41.2mm std)
Chassis
Frame Tubular steel semi double cradle 
27.5 deg (62.5 deg) caster 
117 mm (4.6 in) trail (more)
Wheels 1.85-19 cast alloy 
2.15-18 cast alloy
Dimensions 
Weight 
Wheelbase 
Length 
Seat Height 

163 kg (359 lbs) 
1,410 mm 
2,105 mm
Tyres 3.50-S19-4PR. 
4.00-S18-4PR.
Front Suspension 35 mm telescopics, 150 mm travel, 182 cc 10wt. Brakes 298 x 5 mm front disc 
267 x 5 mm rear disc
Rear suspension Fuel Capacity 12 lit (3.2 US.Gal)(2.6 IMP.gal)
Performance
Top Speed Fuel Economy
Acceleration
Additional Information

 
Model Information 1978 1979
Frame 
Engine
2J2-000101 
2J2-000101
2J2-020101 
2J2-020101

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