Yamaha RS Venture Engine Specifications (2005-2010)

The Yamaha RS Venture is a motor vehicle with runners in the front and caterpillar tracks in the rear, made for traveling over snow. The sled is a touring style snowmobile equipped with a 973cc, liquid-cooled, 4-stroke, DOHC 3-cylinder internal combustion engine.

Mechanically there is no difference between 2005 thru 2010 models. The service manual part number LIT-12618-02-38 is the same for the years and models listed.

Engine Specifications

MODELRS90/RS90R/RSG90/RS90M/RST90/RST90TF
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

Liquid-cooled, 4-stroke, DOHC
Backward-inclined parallel 3-cylinder
973 cm3 (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/cm2, 3.41 psi)
1,450 kPa (14.5 kg/cm2, 1,206 psi) at 400 r/min

Electric starter
Lubrication system:Dry sump
Engine oil:
Type
Oil capacity:
Periodic oil change
With oil filter replacement
Total amount

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)
Oil filter:
Oil filter type

Cartridge (paper)
Drive chain housing oil:
Type
Capacity

Gear oil “GL-3” 75W or 80W
0.25 L (0.22 Imp qt, 0.26 US qt)
Coolant:
Filler cap opening pressure
Capacity

93.3 ~ 122.7 kPa (0.93 ~ 1.23 kg/cm2, 13.2 ~ 17.5 psi)
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”)
Fuel:
Type


Tank capacity

Regular unleaded gasoline
Pump Octane; 88 or higher (For USA/Canada)
Research Octane; 93 or higher (For Europe)
38 L (8.36 Imp gal, 10.04 US gal)
Carburetors:
Type/Quantity
Manufacture

CVK40 × 3
KEIHIN
Spark plug:
Type
Manufacture
Gap

NGK R CR8E
NGK
0.7 ~ 0.8 mm (0.028 ~ 0.031 in)

Engine Maintenance Specifications

MODELRS90/RS90R/RSG90/RS90M/RST90/RST90TF
Cylinder head:
Volume (with spark plug)
Warpage limit
Lines indicate straight edge measurement.

22.82 ~ 23.62 cm3 (1.39 ~ 1.44 cu.in)
0.10 mm (0.0039 in)
*Lines indicate straight edge measurement.
Cylinder:
Material
Bore size
Taper limit
Out of round

Aluminum alloy with dispersion coating
79.000 ~ 79.010 mm (3.1102 ~ 3.1106 in)
0.050 mm (0.0020 in)
0.050 mm (0.0020 in)
Camshaft:
Drive system
Camshaft cap inside diameter
Camshaft journal diameter
Camshaft-journal-to-camshaft-cap clearance
Camshaft dimensions:
Yamaha RS Camshaft Dimensions
1. Intake “A”
2. Limit
3. “B”
4. Limit
5. Exhaust “A”
6. Limit
7. “B”
8. Limit
9. Camshaft runout
Yamaha RS Camshaft Specs 2005 2006 2007 2009 2010 2008

Chain drive (right)
24.500 ~ 24.521 mm (0.9646 ~ 0.9654 in)
24.459 ~ 24.472 mm (0.9630 ~ 0.9635 in)
0.028 ~ 0.062 mm (0.0011 ~ 0.0024 in)








1. 33.75 ~ 33.85 mm (1.3287 ~ 1.3327 in)
2. 33.65 mm (1.3248 in)
3. 24.95 ~ 25.05 mm (0.9823 ~ 0.9862 in)
4. 24.85 mm (0.9783 in)
5. 33.75 ~ 33.85 mm (1.3287 ~ 1.3327 in)
6. 33.65 mm (1.3248 in)
7. 24.95 ~ 25.05 mm (0.9823 ~ 0.9862 in)
8. 24.85 mm (0.9783 in)
9. 0.03 mm (0.0012 in)
Cooling system:
1. Filler cap opening pressure
2. Water pump type
3. Reduction ratio
4. Coolant type

5. Coolant mixing ratio (coolant: water)
6. Capacity




7. Max. impeller shaft tilt
8. Limit

1. 95 ~ 125 kPa (0.95 ~ 1.25 kg/cm2 13.5 ~ 17.8 psi)
2. Single-suction centrifugal pump (Impeller type)
3. 22/28 (0.786)
4. High quality silicate-free ethylene glycol antifreeze containing corrosion inhibitors
5. 3 : 2 (60% : 40%)
6:
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”)
7. 7. 0.15 mm (0.0059 in)
8. 0.072 mm (0.0028 in)

This page details most of the general engine specifications and engine maintenance specifications. Engine specifications identify each component precisely and gives a description of the design, requirements, and when appropriate, materials used to make a component.

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