Spec - Yamaha RS90K Manuel D'atelier

Model
Engine:
Engine type
Cylinder type
Displacement
Bore × stroke
Compression ratio
Maximum hose power r/min
Maximum torque r/min
Vacuum pressure at engine idling speed
Standard compression pressure (at sea
level)
Starting system
Lubrication system:
Engine oil:
Type
Oil capacity
Periodic oil change
With oil filter replacement
Total amount
Oil filter:
Oil filter type
Drive chain housing oil:
Type
Capacity
Coolant:
Filler cap opening pressure
Capacity
Fuel:
Type
Tank capacity
Carburetors:
Type/Quantity
Manufacture
Spark plug:
Type
Manufacture
Gap
GENERAL SPECIFICATIONS
RS90/RS90R/RSG90/RS90M/RST90/RST90TF
Liquid-cooled, 4-stroke, DOHC
Backward-inclined parallel 3-cylinder
3
973 cm (59.37 cu.in)
79.0 × 66.2 mm (3.11 × 2.61 in)
11.3 : 1
84.7 kw (115.2 PS)/8,500 r/min
101.6 Nm (10.4 kgf)/7,000 r/min
24.0 kPa (0.24 kg/cm
1,450 kPa (14.5 kg/cm
Electric starter
Dry sump
API SE, SF, SG or higher SAE 0W-30
2.8 L (2.5 Imp qt, 3.0 US qt)
3.0 L (2.6 Imp qt, 3.2 US qt)
3.7 L (3.3 Imp qt, 3.9 US qt)
Cartridge (paper)
Gear oil "GL-3" 75W or 80W
0.25 L (0.22 Imp qt, 0.26 US qt)
93.3 ~ 122.7 kPa (0.93 ~ 1.23 kg/cm
4.8 L (4.22 Imp qt, 5.07 US qt) (RS90/RS90R/RSG90)
6.3 L (5.55 Imp qt, 6.66 US qt) (RS90M)
5.2 L (4.58 Imp qt, 5.50 US qt) (RST90 "USA/Canada"/
RST90TF "Canada")
5.4 L (4.75 Imp qt, 5.71 US qt) (RST90 "Europe"/RST90TF
"Europe")
Regular unleaded gasoline
R + M
Pump Octane
2
Research Octane; 93 or higher (For Europe)
38 L (8.36 Imp gal, 10.04 US gal)
CVK40 × 3
KEIHIN
NGK R CR8E
NGK
0.7 ~ 0.8 mm (0.028 ~ 0.031 in)
9-2

SPEC

2
, 3.41 psi)
2
, 1,206 psi) at 400 r/min
2
, 13.2 ~ 17.5 psi)
; 88 or higher (For USA/Canada)
9