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Yamaha MT-09 2021 - Page 32

Yamaha MT-09 2021
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2-5
ENGINE SPECIFICATIONS
Clutch plate 1 thickness 2.18–2.42 mm (0.086–0.095 in)
Plate quantity 1 pcs
Warpage limit 0.10 mm (0.004 in)
Clutch plate 2 thickness 1.90–2.10 mm (0.075–0.083 in)
Plate quantity 7 pcs
Warpage limit 0.10 mm (0.004 in)
Clutch spring free length limit 42.53 mm (1.67 in)
Drivetrain
Primary reduction ratio 1.681 (79/47)
Transmission type Constant mesh 6-speed
Gear ratio
1st 2.571 (36/14)
2nd 1.947 (37/19)
3rd 1.619 (34/21)
4th 1.381 (29/21)
5th 1.190 (25/21)
6th 1.037 (28/27)
Main axle runout limit 0.08 mm (0.0032 in)
Drive axle runout limit 0.08 mm (0.0032 in)
Secondary reduction ratio 2.813 (45/16)
Shifting mechanism
Installed shift rod length 236.4–238.4 mm (9.31–9.39 in)
Air filter
Air filter element Oil-coated paper element
Fuel injector
Resistance 12.0 Ω
Idling condition
Engine idling speed 1200–1400 r/min
O2 feedback control Active
Coolant temperature 90–110 °C (194–230 °F)
Difference in vacuum pressure between the
cylinders 0 kPa–1.3 kPa (0 mmHg–10 mmHg, 0 inHg–0.4
inHg)
CO% 0.0–2.0 %
Fuel line pressure (at idle) 300–390 kPa (3.0–3.9 kgf/cm², 43.5–56.6 psi)

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