Technical Data - Engine Tolerances, Wear Limits - KTM 450 SX-F EU Repair Manual

TECHNICAL DATA - ENGINE TOLERANCES, WEAR LIMITS
2Q5
Camshaft - cam height
Exhaust 33.10 ... 33.30 mm (1.3031... 1.311 in)
Camshaft - cam height
Intake
33.90 ... 34.10 mm (1.3346 ... 1.3425 in)
Camshaft bearing - radial clearance
Radial clearance 0.044 ... 0.068 mm (0.00173 ... 0.00268 in)
Wear limit 0.075 mm (0.00295 in)
Valve spring
Minimum length 42.8 mm (1.685 in)
Valve - sealing seat width
Intake 1.50 mm (0.0591 in)
Exhaust 1.50 mm (0.0591 in)
Valve - run-out
At the valve plate S 0.05 mm (S 0.002 in)
At the valve stem S 0.05 mm (S 0.002 in)
Valve spring seat - thickness
1.4 ... 1.5 mm (0.055 ... 0.059 in)
Cylinder/cylinder head - distortion of sealing area S 0.10 mm (S 0.0039 in)
Piston - diameter
Size I 96.960 ... 96.970 mm (3.81732 ... 3.81771 in)
Size II
96.971... 96.980 mm (3.81775 ... 3.8181 in)
Cylinder - drill hole diameter
Size I
97.000 ... 97.012 mm (3.81889 ... 3.81936 in)
Size II 97.013 ... 97.025 mm (3.8194 ... 3.81987 in)
Piston/cylinder - mounting clearance
Size I
0.030 ... 0.052 mm (0.00118 ... 0.00205 in)
Size II 0.032 ... 0.054 mm (0.00126 ... 0.00213 in)
Wear limit 0.070 mm (0.00276 in)
Piston ring - end gap
Compression ring
S 0.80 mm (S 0.0315 in)
Oil scraper ring S 1.00 mm (S 0.0394 in)
Connecting rod - end play of lower conrad bearing
0.40 ... 0.60 mm (0.0157 ... 0.0236 in)
Crankshaft - run-out at bearing pin S 0.03 mm (S 0.0012 in)
Crankshaft - end play 0.25 ... 0.35 mm (0.0098 ... 0.0138 in)
Clutch facing disk - thickness
~ 2.6 mm (~0.102 in)
Clutch spring - length 39.0 ... 40.0 mm (1.535 ... 1.575 in)
Contact surface of clutch facing discs in outer clutch hub S 0.5 mm (S 0.02 in)
Oil pressure regulator valve
Minimum length of pressure spring
38.5 mm (1.516 in)
Shift shaft - sliding plate/shift quadrant clearance
0.40 ... 0.80 mm (0.0157 ... 0.0315 in)