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