2-9ENGINE SPECIFICATIONSClutch platesThickness 1.50-1.70 mm (0.059-0.067 in)Plate quantity 6Maximum warpage 0.20 mm (0.0079 in)Clutch springFree length 55.60 mm (2.19 in)Limit 52.82 mm (2.08 in)Quantity 5TransmissionTransmission type Constant mesh, 5-speedPrimary reduction system Spur gearPrimary reduction ratio 75/36 (2.083)Secondary reduction system Chain driveSecondary reduction ratio 47/15 (3.133)Operation Left-foot operationGear ratios1st gear 30/12 (2.500)2nd gear 26/16 (1.625)3rd gear 23/20 (1.150)4 th gear 20/22 (0.909)5th gear 20/26 (0.769)Maximum main axle runout 0.08 mm (0.0031 in)Maximum drive axle runout 0.08 mm (0.0031 in)Shifting mechanismShift mechanism type Shift drum and guide barShift fork thickness 5.76-5.89 mm (0.2267-0.23188 in)Decompression deviceDevice type Auto decompressionAir filterAir filter type Oil-coated paper elementFuel pumpPump type ElectricalModel/manufacturer 5VK/DENSOConsumption amperage (maximum) 3.5 AOutput pressure 294 kPa (41.8 psi) (2.94 kg/cm 2)Throttle bodyModel/manufacturer x quantity 44EHS/5B/MIKUNI x 1Intake vacuum pressure 37.6-40.2 kPa (11.1-11.9 inHg)(282-302 mmHg)Throttle cable free play(at the flange of the throttle grip) 3.0-5.0 mm (0.12-0.20 in)ID mark 5YK1 00Throttle valve size #50