24
TECHNICAL DATA
205
24.1
Engine
Design
1-cylinder 4-stroke engine, water-cooled
Displacement
449.3 cm
3
(27.418 cu in)
Stroke
63.4 mm (2.496 in)
Bore
95 mm (3.74 in)
Compression ratio
12.6:1
Idle speed
2,250 ... 2,350 rpm
Control
OHC, 4 valves controlled via rocker arm
Valve diameter, intake
40 mm (1.57 in)
Valve diameter, exhaust
33 mm (1.3 in)
Valve clearance
Intake at: 20 °C (68 °F)
0.10 ... 0.15 mm (0.0039 ... 0.0059 in)
Exhaust at: 20 °C (68 °F)
0.12 ... 0.17 mm (0.0047 ... 0.0067 in)
Crankshaft bearing
2 grooved ball bearings
Conrod bearing
Slide bearing
Piston pin bearing
Not a bearing bush - DLC-plated piston pins
Pistons
Forged light alloy
Piston rings
1 compression ring, 1 oil scraper ring
Engine lubrication
Pressure circulation lubrication with two Eaton pumps
Primary transmission
32:76
Clutch
Antihopping clutch
APTC
™
in oil bath/hydraulically operated
Gearbox
5-gear, claw shifted
Transmission ratio
1st gear
16:32
2nd gear
18:30
3rd gear
20:28
4th gear
22:26
5th gear
24:24
Alternator
12 V, 75 W
Ignition
Contactless controlled fully electronic ignition with digital igni-
tion adjustment
Spark plug
NGK LKAR8Al-9
Spark plug electrode gap
0.9 mm (0.035 in)
Cooling
Water cooling, permanent circulation of coolant by water pump
Starting aid
Electric starter
24.2
Tolerance, engine wear limits
Camshaft - cam height
Exhaust
33.10 ... 33.30 mm (1.3031 ... 1.311 in)
Intake
33.90 ... 34.10 mm (1.3346 ... 1.3425 in)
Valve spring
Intake minimum length (without valve spring seat)
40. 7 mm (1 .602 in)
Exhaust minimum length (without valve spring seat)
40. 7 mm (1.602 in)
Valve spring seat
1.8 mm (0.071 in)
Cylinder/cylinder head - sealing area distortion
s; 0.10 mm (s; 0.0039 in)
Piston - diameter
Size I
94.93 ... 94.96 mm (3.7374 ... 3.7386 in)
Size II
94.94 ... 94.97 mm (3.7378 ... 3.739 in)
Cylinder - drill hole diameter
Size I
95.000 ... 95.012 mm (3.74015 ... 3.74062 in)
Size II
95.013 ... 95.025 mm (3.74066 ... 3.74113 in)
Содержание FS 450 2015
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