Tolerance, Engine Wear Limits - Husqvarna FC 250 2017 Repair Manual

25.2

Tolerance, engine wear limits

Camshaft bearing - sleeve bearing
Radial clearance
Wear limit
Valve spring
Minimum length, outer intake valve
Minimum length, inner intake valve
Minimum length, outlet valve
Valve - sealing seat width
Intake
Exhaust
Valve - run-out
At the valve plate
Valve spring seat - thickness
Cylinder/cylinder head - distortion of sealing area
Piston - diameter
Size I
Size II
Cylinder - drill hole diameter
Size I
Size II
Piston/cylinder - mounting clearance
Size I
Size II
Wear limit
Piston ring end gap
Compression ring
Oil scraper ring
Connecting rod - axial play of lower conrod bearing
Crankshaft - run-out at bearing pin
Crankshaft - axial play
Clutch facing discs - thickness of total package
Clutch spring - length
Oil pressure control valve
Minimum length of pressure spring
Shift shaft - sliding plate/shift quadrant clearance
TECHNICAL DATA 25
0.020 ... 0.054 mm (0.00079 ... 0.00213 in)
0.065 mm (0.00256 in)
42.40 mm (1.6693 in)
39.20 mm (1.5433 in)
40.40 mm (1.5905 in)
1 .40 mm (0.0551 in)
1 .40 mm (0.0551 in)
s
0.05 mm (S 0.002 in)
1.40 ... 1.60 mm (0.0551 ... 0.063 in)
s
0.10 mm (s 0.0039 in)
77.960 ... 77.970 mm (3.06929 ... 3.06968 in)
77.970 ... 77.980 mm (3.06968 ... 3.07007 in)
78.000 ... 78.012 mm (3.07086 ... 3.07133 in)
78.012 ... 78.025 mm (3.07133 ... 3.07184 in)
0.030 ... 0.052 mm (0.00118 ... 0.00205 in)
0.032 ... 0.055 mm (0.00126 ... 0.00217 in)
0.070 mm (0.00276 in)
s
0.40 mm (s 0.0157 in)
s
0. 70 mm (s 0.0276 in)
0.20 ... 0.45 mm (0.0079 ... 0.0177 in)
s
0.03 mm (S 0.0012 in)
0.40 ... 0.50 mm (0.0157 ... 0.0197 in)
� 23.3 mm (� 0.917 in)
� 38.5 mm (� 1.516 in)
23.5 mm (0.925 in)
0.40 ... 0.80 mm (0.0157 ... 0.0315 in)
269