KTM 300 EXC - 22 Technical Data; 22.1 Engine; 22.2 Engine Tightening Torques

TECHNICAL DATA 22
135
22.1 Engine
Design 1-cylinder 2-stroke engine, water-cooled, with reed
intake, exhaust control and transfer duct injection
Displacement 293.15 cm³ (17.8892 cu in)
Stroke 72 mm (2.83 in)
Hole 72 mm (2.83 in)
Idle speed 1,400 … 1,500 rpm
Exhaust control - setting measurement 2.3
+ 0.2
− 0
mm (0.091
+ 0.008
− 0
in)
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
Engine lubrication Mixture oil lubrication
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 transmission, 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 ignition adjustment
Spark plug NGK BR 7 ES
Spark plug electrode gap 0.6 mm (0.024 in)
Cooling Water cooling, permanent circulation of coolant by
water pump
Starting aid Electric starter system
22.2 Engine tightening torques
Screw, inner membrane sheets EJOTDELTA PT
®
35x25 1 Nm (0.7 lbf ft)
Screw, membrane support plate EJOTDELTA PT
®
30x12 1 Nm (0.7 lbf ft)
Screw, outer membrane sheets EJOTDELTA PT
®
30x6 1 Nm (0.7 lbf ft)
Screw, angle lever, exhaust control M5 6 Nm (4.4 lbf ft)
Loctite
®
243™
Screw, bearing retainer M5 6 Nm (4.4 lbf ft)
Loctite
®
243™
Screw, clutch spring retainer M5 6 Nm (4.4 lbf ft)