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Specifications
ESU1246H
Dimensions:
Overall length:
3215 mm (126.6 in)
Overall width:
1202 mm (47.3 in)
Overall height:
1330 mm (52.4 in) (RST90)
1380 mm (54.3 in) (RST90TF, RST90TFL,
RST90TFY)
Weight:
With oil and fuel:
335.0 kg (739 lb) (RST90)
348.0 kg (767 lb) (RST90TF, RST90TFY)
351.0 kg (774 lb) (RST90TFL)
Ski stance:
1086 mm (42.8 in)
Engine:
Type:
Liquid cooled 4-stroke, 12 valves
Cylinder arrangement:
Inline 3-cylinder
Displacement:
1049 cm³ (RST90TF, RST90TFL, RST90TFY)
973 cm³ (RST90)
Bore × stroke:
79.0 × 66.2 mm (3.11 × 2.61 in) (RST90)
82.0 × 66.2 mm (3.23 × 2.61 in) (RST90TF,
RST90TFL, RST90TFY)
Idling speed:
1250–1350 r/min (RST90TF, RST90TFL,
RST90TFY)
1300–1500 r/min (RST90)
Engine oil:
Recommended grade:
API service SG type or higher, JASO
standard MA
Recommended brand:
YAMALUBE
Type:
SAE 0W-30
Carburetor:
Model × quantity:
CVK40 × 3 (RST90)
Fuel injection:
ID mark:
8JU1 00 (RST90TF, RST90TFL,
RST90TFY)
110
Fuel:
Recommended fuel:
REGULAR UNLEADED GASOLINE ONLY
Minimum pump octane (R+M)/2:
86
Starting system:
Electric starter
Chassis:
Drive track:
Material:
Molded rubber, fiberglass-rod reinforced
Type:
Extrovert drive type (RST90TF,
RST90TFL, RST90TFY)
Internal drive type (RST90)
Width:
381 mm (15.0 in)
Deflection:
30.0–35.0 mm (1.18–1.38 in)
Length on ground:
1074 mm (42.3 in) (RST90TF, RST90TFL,
RST90TFY)
985 mm (38.8 in) (RST90)
Rear suspension:
Type:
Slide rail suspension
Track sprocket wheel:
Material:
Polyethylene
Number of teeth:
9
Transmission:
Clutch type:
Automatic centrifugal engagement
Overall reduction ratio:
6.74–1.77 : 1 (RST90)
7.41–1.95 : 1 (RST90TF, RST90TFL)
7.80–2.05 : 1 (RST90TFY)
Sheave distance:
267.0–270.0 mm (10.51–10.63 in)
Sheave offset:
13.5–16.5 mm (0.53–0.65 in)
Engagement speed (Subject to change
according to elevation settings.):
2400–2800 r/min (RST90TFY)
2500–2900 r/min (RST90TF, RST90TFL)
3000–3400 r/min (RST90)
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