Yamaha RST90G Owner's Manual page 117

Shift speed [Subject to change according to
elevation settings. Usually achieved after
approximately 800 m (0.5 mi) traveled.]:
8000–8750 r/min (RST90TF, RST90TFL)
8250–8750 r/min (RST90)
Drive chain type:
Silent chain enclosed in oil bath
Drive chain housing oil:
Type:
SAE 75W or 80W API GL-3 Gear oil
Capacity:
0.25 L (0.26 US qt, 0.22 Imp.qt)
Reverse system:
Yes
Primary reduction ratio:
3.80–1.00 : 1
Secondary reduction ratio:
39/19 (2.05) (RST90TFY)
39/20 (1.95) (RST90TF, RST90TFL)
39/22 (1.77) (RST90)
Secondary reduction ratio [R]:
2.27 (RST90)
2.50 (RST90TF, RST90TFL)
2.63 (RST90TFY)
Fuel tank capacity:
34.6 L (9.13 US gal, 7.61 Imp.gal) (RST90TF,
RST90TFL, RST90TFY)
39.3 L (10.38 US gal, 8.65 Imp.gal) (RST90)
Engine oil quantity:
With oil filter cartridge replacement:
3.0 L (3.17 US qt, 2.64 Imp.qt) (RST90)
3.3 L (3.49 US qt, 2.90 Imp.qt) (RST90TF,
RST90TFL, RST90TFY)
Without oil filter cartridge replacement:
2.8 L (2.96 US qt, 2.46 Imp.qt) (RST90)
3.1 L (3.28 US qt, 2.73 Imp.qt) (RST90TF,
RST90TFL, RST90TFY)
Total amount:
3.7 L (3.91 US qt, 3.26 Imp.qt) (RST90)
4.0 L (4.23 US qt, 3.52 Imp.qt) (RST90TF,
RST90TFL, RST90TFY)
Brake:
Type:
Hydraulic disc type (ventilated disc)
Operation:
Handle lever, left-hand operated
Throttle:
Operation:
Handle lever, right-hand operated
Specifications
Electrical system:
Ignition system:
TCI
Spark plug:
Manufacturer:
NGK
Model:
CR8E
Gap:
0.7–0.8 mm (0.028–0.031 in)
Battery:
Model:
YTX20L-BS
Voltage, capacity:
12 V, 18.0 Ah
Ten-hour rate amperage:
1.8 A
Bulb voltage, wattage × quantity:
Headlight:
12 V, 60/55 W × 2
Headlight bulb type:
Halogen bulb
Tail/brake light:
12 V, 5/21 W × 2 (RST90)
Tail/brake light:
LED (RST90TF, RST90TFL, RST90TFY)
Meter lighting:
14 V, 50 mA × 6 (RST90)
Meter lighting:
LED (RST90TF, RST90TFL, RST90TFY)
High beam indicator light:
14 V, 80 mA × 1 (RST90)
Warning light:
LED (RST90TF, RST90TFL, RST90TFY)
Warning light:
14 V, 80 mA × 1 (RST90)
High beam indicator light:
LED (RST90TF, RST90TFL, RST90TFY)
Low coolant temperature indicator light:
LED (RST90TF, RST90TFL, RST90TFY)
Low coolant temperature indicator light:
14 V, 80 mA × 1 (RST90)
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