24
TECHNICAL DATA
198
24.1
Engine
Design
1-cylinder 4-stroke engine, water-cooled
Displacement
249.91 cm
3
(15.2505 cu in)
Stroke
52.3 mm (2.059 in)
Bore
78 mm (3.07 in)
Compression ratio
13.9:1
Idle speed
2,250 ... 2,350 rpm
Control
DOHC, four valves controlled via cam lever, drive via timing
chain
Valve diameter, intake
32.5 mm (1.28 in)
Valve diameter, exhaust
26.5 mm (1.043 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)
0.13 ... 0.18 mm (0.0051 ... 0.0071 in)
Crankshaft bearing
2 cylinder bearings
Conrod bearing
Slide bearing
Piston pin bearing
Bearing bush
Pistons
Forged light alloy
Piston rings
1 compression ring, 1 oil scraper ring
Engine lubrication
Pressure circulation lubrication with two Eaton pumps
Primary transmission
24:73
Clutch
Multidisc clutch in oil bath/hydraulically activated
Gearbox
5-gear, claw shifted
Transmission ratio
1st gear
13:32
2nd gear
16:32
3rd gear
17:28
4th gear
19:26
5th gear
21 :25
Alternator
12V, 66W
Ignition
Contactless controlled fully electronic ignition with digital igni-
tion adjustment
Spark plug
NGK LMAR9Al-8
Spark plug electrode gap
0.8 mm (0.031 in)
Cooling
Water cooling, permanent circulation of coolant by water pump
Starting aid
Electric starter
24.2
Engine tolerance, wear limits
Camshaft bearing - sleeve bearing
Radial clearance
0.020 ... 0.054 mm (0.00079 ... 0.00213 in)
Wear limit
0.065 mm (0.00256 in)
Valve spring
Minimum length of intake valve
41.20 mm (1 .622 in)
Minimum length of exhaust valve
41.10 mm(1.6181 in)
Valve - sealing seat width
Intake
1 .40 mm (0.0551 in)
Exhaust
1 .40 mm (0.0551 in)
Valve - run-out
At the valve plate
s: 0.05 mm (S: 0.002 in)
Valve spring seat - thickness
1.40 ... 1.50 mm (0.0551 ... 0.0591 in)
Cylinder/cylinder head - distortion of sealing area
s: 0.10 mm (S: 0.0039 in)
Содержание F2101O1
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