Technical Data; Engine; Engine Tightening Torques - KTM 50 SX 2012 Owner's Manual

20

TECHNICAL DATA

20.1

Engine

Design
Displacement
Stroke
Bore
Crankshaft bearing
Conrod bearing
Piston pin bearing
Pistons
Piston rings
Engine lubrication (50 SX)
Engine lubrication (50 SX Mini)
Primary transmission
Clutch
Gearbox
Transmission ratio
Ignition
Spark plug
Spark plug electrode gap
Cooling
Starting aid
20.2

Engine tightening torques

Screw, bearing retainer
Screw, kickstarter
Screw, oil pump (50 SX Mini)
Screw, stator clamp
Screw, water pump wheel
Bleeder flange of engine case
Drain plug, water pump cover
Screw, alternator cover
Screw, clutch cover
Screw, engine case
Screw, engine sprocket cover
Screw, exhaust flange
Screw, fitting pin
Screw, gear oil level check
Screw, ignition coil
Screw, intake flange
Screw, pressure plate
Screw, water pump cover
Screw, cylinder head
Nuts, cylinder base
Screw, outer clutch hub
Stud bolt, cylinder base
Spark plug
Nut, primary gear
Nut, rotor
Oil drain plug with magnet
1-cylinder 2-stroke engine, water-cooled, with reed intake
49.0 cm³ (2.99 cu in)
40 mm (1.57 in)
39.5 mm (1.555 in)
2 grooved ball bearings
Needle bearing
Needle bearing
Aluminum cast
1 rectangular ring
Mixture oil lubrication
Separate lubrication
33:61 straight cut spur gear
Multi-disc automatic clutch on the main shaft/centrifugal force
Rigid 1-stage reduction gear
14:31
SELETTRA 2p D36
NGK LR 8 B
0.60 mm (0.0236 in)
Water-cooled
Kickstarter
M5
M5
M5
M5
M5
M6
M6
M6
M6
M6
M6
M6
M6
M6
M6
M6
M6
M6
M7
M8
M8
M8
M10x1
M10x1.25
M10x1.25
M12x1.5
5 Nm (3.7 lbf ft)
6 Nm (4.4 lbf ft)
6 Nm (4.4 lbf ft)
6 Nm (4.4 lbf ft)
5 Nm (3.7 lbf ft)
4 Nm (3 lbf ft)
6 Nm (4.4 lbf ft)
6 Nm (4.4 lbf ft)
10 Nm (7.4 lbf ft)
10 Nm (7.4 lbf ft)
10 Nm (7.4 lbf ft)
10 Nm (7.4 lbf ft)
10 Nm (7.4 lbf ft)
6 Nm (4.4 lbf ft)
4 Nm (3 lbf ft)
5 Nm (3.7 lbf ft)
10 Nm (7.4 lbf ft)
10 Nm (7.4 lbf ft)
18 Nm (13.3 lbf ft)
20 Nm (14.8 lbf ft)
35 Nm (25.8 lbf ft)
10 Nm (7.4 lbf ft)
10... 12 Nm (7.4...
8.9 lbf ft)
40 Nm (29.5 lbf ft)
15 Nm (11.1 lbf ft)
20 Nm (14.8 lbf ft)
–
®
Loctite 243™
–
®
Loctite 222
®
Loctite 243™
®
Loctite 243™
–
–
–
–
–
®
Loctite 243™
®
Loctite 648™
–
®
Loctite 243™
®
Loctite 243™
®
Loctite 243™
–
–
–
®
Loctite 243™
–
–
®
Loctite 243™
®
Loctite 243™
–
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