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22 TECHNICAL DATA 123
Exhaust valve, beginning of adjustment
Crankshaft bearing 1 grooved ball bearing/1 roller bearing
Conrod bearing Needle bearing
Piston pin bearing Needle bearing
Piston Cast aluminum
Piston rings 2 rectangular rings
X distance (upper edge of piston to upper edge of cylinder) 0… 0.10 mm (0… 0.0039 in)
Z distance (height of control flap) 49.5 mm (1.949 in)
Primary transmission 26:73
Clutch Multidisc clutch in oil bath/hydraulically activated
Transmission 6-gear, claw shifted
Transmission ratio
First gear 14:32
Second gear 16:26
Third gear 20:25
Fourth gear 22:23
Fifth gear 25:22
Sixth gear 26:20
Alternator 12 V, 110 W
Ignition system Contactless controlled, fully electronic ignition with digital igni-
tion adjustment, type Kokusan
Spark plug NGK BR 7 ES
Spark plug electrode gap 0.60 mm (0.0236 in)
Cooling Water cooling, permanent circulation of coolant by water pump
Starting aid Kick starter and electric starter
22.2 Engine tightening torques
22.2.1 125 XCW EU
Screw, inner membrane sheets EJOT DELTA PT
®
35x25 1 Nm (0.7 lbf ft)
Screw, membrane core plate EJOT DELTA PT
®
30x12 1 Nm (0.7 lbf ft)
Screw, outer membrane sheets EJOT DELTA PT
®
30x6 1 Nm (0.7 lbf ft)
Screw, control lever, exhaust control M5 6 Nm (4.4 lbf ft) Loctite
®
243™
Screw, crankshaft position sensor M5 6 Nm (4.4 lbf ft) Loctite
®
243™
Screw, exhaust control cover M5 6 Nm (4.4 lbf ft)
Screw, locking lever M5 6 Nm (4.4 lbf ft) Loctite
®
243™
Screw, retaining bracket, rotary valve M5 6 Nm (4.4 lbf ft)
Screw, water pump wheel M5 6 Nm (4.4 lbf ft) Loctite
®
243™
Bleeder screw, cylinder head M6 8 Nm (5.9 lbf ft)
Drain plug, water pump cover M6 8 Nm (5.9 lbf ft)
Nut, adjusting screw, power valve M6 8 Nm (5.9 lbf ft)
Screw plug, starter motor mounting M6 8 Nm (5.9 lbf ft)
Screw, alternator cover M6 8 Nm (5.9 lbf ft)
Screw, bearing retainer M6 10 Nm (7.4 lbf ft) Loctite
®
243™
Screw, clutch slave cylinder M6 10 Nm (7.4 lbf ft)
Screw, clutch spring retainer M6 10 Nm (7.4 lbf ft)
Screw, control lever, exhaust control M6 10 Nm (7.4 lbf ft) Loctite
®
243™
Screw, engine case M6 10 Nm (7.4 lbf ft)
Screw, exhaust flange M6 10 Nm (7.4 lbf ft)
Screw, gear oil level check M6 8 Nm (5.9 lbf ft)
Screw, intake flange/reed valve housing M6 6 Nm (4.4 lbf ft)
Screw, intermediate clutch cover M6x20 10 Nm (7.4 lbf ft)
Screw, intermediate clutch cover M6x25 10 Nm (7.4 lbf ft)
125


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