Engine Tolerance, Wear Limits; 125 Duke - KTM 125 DUKE EU Repair Manual

21 TECHNICAL DATA
Piston rings
Engine lubrication
Primary transmission
Clutch
Transmission
Transmission ratio
1st gear
2nd gear
3rd gear
4th gear
5th gear
6th gear
Mixture preparation
Ignition
Alternator
Spark plug
Spark plug electrode gap
Cooling
Idle speed
Starting aid
21.2

Engine tolerance, wear limits

21.2.1

125 Duke

Valve - sealing seat width
Intake
Exhaust
Cylinder/cylinder head - distortion of sealing area
Cylinder - bore diameter
Piston - diameter
Piston/cylinder - mounting clearance
New condition
Wear limit
Piston ring end gap
Compression ring
Oil scraper ring
Connecting rod - radial play of lower conrod bearing
New condition
Wear limit
Crankshaft – diameter, crank pin
Crankshaft classification A
Crankshaft classification B
Clutch facing discs – thickness of total package
Clutch spring - length
Contact surface, clutch facing discs in clutch basket
Oil pressure regulator valve - minimum spring length
Oil pump
Play between external rotor and oil pump housing
Play between external rotor and internal rotor
Axial play
Shift shaft – play in sliding plate/shift quadrant
1 L-ring, 1 tapered compression piston ring, 1 oil scraper ring
Pressure circulation lubrication with one rotary pump
22:72
Clutch in oil bath/mechanically activated
6-gear, claw shifted
12:34
15:31
18:28
21:26
22:23
24:22
Electronically controlled fuel injection
Contactless controlled fully electronic ignition with digital igni-
tion adjustment
12 V, 238 W
BOSCH VR 5 NE
0.8 mm (0.031 in)
Water cooling, permanent circulation of coolant by water pump
1,450... 1,550 rpm
Electric starter
0.90... 1.10 mm (0.0354... 0.0433 in)
0.90... 1.10 mm (0.0354... 0.0433 in)
≤ 0.10 mm (≤ 0.0039 in)
58.006... 58.013 mm (2.2837... 2.28397 in)
57.963... 57.975 mm (2.282... 2.28248 in)
0.031... 0.050 mm (0.00122... 0.00197 in)
0.08 mm (0.0031 in)
≤ 0.40 mm (≤ 0.0157 in)
≤ 0.80 mm (≤ 0.0315 in)
0.030... 0.060 mm (0.00118... 0.00236 in)
0.080 mm (0.00315 in)
25.990... 25.998 mm (1.02323... 1.02354 in)
25.999... 26.006 mm (1.02358... 1.02386 in)
≥ 21.30 mm (≥ 0.8386 in)
≥ 37 mm (≥ 1.46 in)
≤ 0.5 mm (≤ 0.02 in)
26.00 mm (1.0236 in)
0.09... 0.20 mm (0.0035... 0.0079 in)
0.10... 0.20 mm (0.0039... 0.0079 in)
0.10... 0.25 mm (0.0039... 0.0098 in)
0.15... 0.45 mm (0.0059... 0.0177 in)
204