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Specifications
179
Engine
Number of engines: 2
Engine type: Liquid cooled 4-stroke, DOHC
Number of cylinders: 4
Engine displacement: 1812 cm³
Bore × stroke: 86.0 × 78.0 mm (3.39 × 3.07 in)
Compression ratio: 11.0 : 1
Valve clearance-intake (cold): 0.14–0.23 mm (0.0055–0.0091 in)
Valve clearance-exhaust (cold): 0.28–0.37 mm (0.0110–0.0146 in)
Lubrication system: Wet sump
Cooling system: Water
Starting system: Electric
Ignition system: T.C.I.
Spark plug (NGK): LFR6A
Spark plug gap: 0.8–0.9 mm (0.031–0.035 in)
Battery capacity: 12 V, 85 Ah
Charging system: Flywheel magneto
Drive unit
Propulsion system: Jet pump
Jet pump type: Axial flow, single stage
Impeller rotation: Counterclockwise
Pitch angle: 14.7°
Transmission: Direct drive from engine
Jet thrust nozzle angle: 23+23°
Jet thrust nozzle trim angle 3°
Fuel and oil
Recommended fuel: Regular unleaded gasoline
Minimum octane rating (PON): 86
Minimum octane rating (RON): 90
Fuel tank total capacity: 189 L (50.0 US gal, 41.6 Imp.gal)
Recommended engine oil: YAMALUBE 4W or 4-stroke motor oil
Recommended engine oil type SAE: SAE 10W-30, 10W-40, 20W-40, 20W-50
Recommended engine oil grade API:
3-star models
API SG, SH, SJ, SL
4-star models
API SJ, SL
Engine oil total quantity: 5.3 L (5.60 US qt, 4.66 Imp.qt)
Engine oil quantity with oil filter replacement: 3.6 L (3.81 US qt, 3.17 Imp.qt)
Engine oil quantity without oil filter replacement: 3.5 L (3.70 US qt, 3.08 Imp.qt)
ITEM Specification
SportsBoat_F3R12.book Page 179 Thursday, June 21, 2018 10:45 AM
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