ENGINE SPECIFICATIONS
2-4
Drivetrain
Primary reduction ratio 3.353 (57/17)
Transmission type Constant mesh 6-speed
Gear ratio
1st 2.385 (31/13)
2nd 1.813 (29/16)
3rd 1.444 (26/18)
4th 1.143 (24/21)
5th 0.957 (22/23)
6th 0.815 (22/27)
Main axle runout limit 0.08 mm (0.0032 in)
Drive axle runout limit 0.08 mm (0.0032 in)
Secondary reduction ratio 3.923 (51/13)
Final drive Chain
Air filter
Air filter element Wet element
Air filter oil grade Yamaha foam air filter oil or other quality foam
air filter oil
Fuel pump
Pump type Electrical
Maximum consumption amperage 2.4 A
Fuel injector
Resistance 12.0
Throttle body
ID mark BAK1
Idling condition
Engine idling speed 1900–2100 r/min
Exhaust gas sampling point Sampling port on the exhaust pipe
Coolant temperature 70–80 C (158–176 F)
Fuel line pressure (at idle) 300–390 kPa (3.0–3.9 kgf/cm², 43.5–56.6 psi)
CO% 4.0–5.0 %
Intake vacuum 43.7 kPa (328 mmHg, 12.9 inHg)
Throttle grip free play 3.0–6.0 mm (0.12–0.24 in)
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