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23.1
Engine
23.1.1
All 250 models
Design
Displacement
Stroke
Hole
Idle speed
Exhaust control - setting measurement
Crankshaft bearing
Conrod bearing
Piston pin bearing
Piston
Piston rings
Engine lubrication
X distance (upper edge of piston to upper edge of
cylinder)
Z distance (height of control flap)
Primary transmission
Clutch
Transmission
Transmission ratio
first-gear
second-gear
third-gear
fourth-gear
fifth-gear
sixth-gear
Alternator
Ignition system
Spark plug
Spark plug electrode gap
Cooling
Starting aid
23.1.2
All 300 models
Design
Displacement
Stroke
Hole
Idle speed
Exhaust control - setting measurement
1-cylinder 2-stroke engine, water-cooled, with reed
intake, exhaust control and transfer duct injection
249 cm³ (15.19 cu in)
72 mm (2.83 in)
66.4 mm (2.614 in)
1,400 ... 1,500 rpm
2.7
mm (0.106
in)
+ 0.2
+ 0.008
− 0
− 0
1 grooved ball bearing/1 roller bearing
Needle bearing
Needle bearing
Cast aluminum
2 half keystone rings
Separate lubrication
0 ... 0.10 mm (0 ... 0.0039 in)
49.0 mm (1.929 in)
26:73
Multidisc clutch in oil bath/hydraulically activated
6 gear transmission, claw shifted
14:32
16:26
20:25
22:23
25:22
26:20
12 V, 196 W
Contactless controlled fully electronic ignition with
digital ignition adjustment
NGK BR 7 ES
0.6 mm (0.024 in)
Water cooling, permanent circulation of coolant by
water pump
Electric starter system
1-cylinder 2-stroke engine, water-cooled, with reed
intake, exhaust control and transfer duct injection
293.15 cm³ (17.8892 cu in)
72 mm (2.83 in)
72 mm (2.83 in)
1,400 ... 1,500 rpm
2.3
mm (0.091
in)
+ 0.2
+ 0.008
− 0
− 0
TECHNICAL DATA 23
159
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