Owner`s manual

TECHNICAL INFORMATION
2-3
En
g
ine 450 - 550
2.1. TECHNICAL INFORMATION
2.1.1. TECHNICAL DATA
ENGINE 450
ENGINE
Model (SXV 450) 45SX
Model (RXV 450) 45RX
Type Twin-cylinder, 4-stroke with 4 valves, single overhead camshaft
Number of cylinders 2
Total displacement 449 cu. cm (27.40 cu in).
Bore/stroke 76 mm x 49.5 mm (2.99 in x 1.95 in)
Compression ratio (13 ÷ 1 )± 0.5
Idling speed (1800 ÷2000) ± 100 rpm
Valve timing (SXV 450)
Intake opens at
Intake closes at
Exhaust opens at
Exhaust closes at
18° BTDC
48° ABDC
49° BBDC
15° ATDC
Valve timing (RXV 450)
Intake opens at
Intake closes at
Exhaust opens at
Exhaust closes at
18° BTDC
30° ABDC
31° BBDC
19° ATDC
Intake valve clearance 0.07 ÷ 0.12 mm (0.0027 ÷ 0.0047 in)
Exhaust valve clearance 0.17 ÷ 0.22 mm (0.0067 ÷ 0.0087 in)
Ignition Digital, electronic
Starting Electric starter
Spark advance Variable, controlled by CDI
Air filter With dry filter cartridge
Clutch
Type Multiplate, wet clutch with control on the left side of the handlebar
Driving plates 1 # plates: 2
Thickness: 1.5 mm (0.059 in)
Driving plates 2 # plates: 5
Thickness: 2 mm (0.079 in)
Clutch plates # plates: 8
Thickness: 2.75 mm (0.108 in)
Clutch springs Uncompressed length: xxxx mm (xxx in)
# springs: 6
Lubricating system
Type Gearbox splash lubrication with special fluid; engine forced lubrication
with scavenge pump and external reservoir
Oil filter Paper type
Engine oil quantity After overhaul, 1400 cu.cm (0.37 gal) (0.31 UKgal)
Periodic oil change: 1300 cu.cm (0.34 gal) (0.28 UKgal)
Cooling system
Type Liquid
Water pump Centrifugal pump with single intake
Reduction ratio: 44/22