YAMAHA XS 750 - 1977

Between 1975-1977, the Japanese manufacturers seek a little their way. They, which all practically began with 2-strokes (except Honda, of course), should be interested in 4-strokes. Kawasaki, who drew the first in 1973 with the Z 900 to counter the 750 Honda, launches then on the market the Z 650 and Suzuki, the GS 750. Yamaha made a masterly flop with the TX 750 twin-cylinder and must better do. Not being able definitely to make like everyone (and it is so much better), the Japanese firm leaves a 3 cylinders with cardan drive. Suffering from some evils of youth, this XS improved with the passing of years like a good wine, the most succeeded being the 1979 model which received a 24 liters fuel tank. I lengthily hesitated in 1978 between the XS and the Z 650 Kawasaki and chose (without any regret) the latter.


 Engine type : Four stroke, in-line three cylinders, double overhead camshaft, air cooled, two-valves per cylinder.
 Capacity :  747 cm3
 Bore x Stroke :  68 x 68.6 mm
 Max power/rpm :  64 HP at 7500 rpm (68 CV at 8000 rpm – XSE)
 Max torque :  6.45 mkg at 6000 rpm (6.5 mkg at 6500 rpm - XSE)
 Compression ratio :  8.5 : 1 (9.2 : 1 –XSE)
 Fuel system :  3 Mikuni carburettors - Type : BS 34.
 Ignition :  battery - 12 V (CDI up to 1978 – XSE)
 Gear box :  5 speed
 Tyres :  Front : 3.25 X 19" – Rear : 4.00 X 18"
 Weight (empty) :  231 kg
 Max speed :  180 km/h (200 km/h – XSE)