Owner`s manual

TECHNICAL INFORMATION
2 - 4
En
g
ine 450 - 550
SXV450 TRANSMISSION
Gear ratios
Ratio Primary Secondary Final ratio Total ratio
1st 22/56 = 1: 2.545 12/30 = 1: 2.307 15/48 = 1: 3.067 1 : 18.013
2nd 15/27 = 1: 1.800 1 : 14.050
3rd 16/23 = 1: 1.437 1 : 11.221
4th 20/23 = 1: 1.150 1 : 8.897
5th 21/21 = 1: 1.000 1 : 7.806
RXV450 TRANSMISSION
Gear ratios
Ratio Primary Secondary Final ratio Total ratio
1st 22/56 = 1: 2.545 12/31 = 1: 2.583 15/48 = 1: 3.200 1 : 21.042
2nd 13/25 = 1: 1.923 1 : 15.664
3rd 15/23 = 1: 1.533 1 : 12.489
4th 19/24 = 1: 1.263 1 : 10.288
5th 21/22 = 1: 1.047 1 : 8.533
FUEL SYSTEM
Type Electronic injection
Throttle Ø 38 mm (1.49 in)
FUEL
Fuel Premium-grade unleaded petrol, minimum octane rating 95 (RON) and
85 (MON), as per DIN 51 607.
SPARK PLUGS
Standard NGK CR8EB
Spark plug electrode gap 0.7 – 0.8 mm (0.028 – 0.031 in.)
Resistance
5 KΩ
ELECTRIC SYSTEM
Generator (with permanent magnet) 12 V – 350 W
Starter motor 12 V – 480 W
ENGINE 550
ENGINE
Model (SXV 550) 55SX
Model (RXV 550) 55RX
Type Twin-cylinder, 4-stroke with 4 valves, single overhead camshaft
Number of cylinders 2
Total displacement 553 cu. cm (33.75 cu in).
Bore/stroke 80 mm x 55.0 mm (3.15 in x 2.16 in)
Compression ratio (12.5 ÷ 1 )± 0.5
Idling speed (1800 ÷2000) ± 100 rpm
Valve timing (SXV 550)
Intake opens at
Intake closes at
Exhaust opens at
Exhaust closes at
18° BTDC
48° ABDC
49° BBDC
15° ATDC
Valve timing (RXV 550)
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