Husqvarna HS 139A, Руководство по ремонту

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8.4 Tightening torques
Item Screw Thread Torque, Nm
Connecting rod bolt M6×1.0 12
Flywheel nut M14×1.5 (special nut) 55-65
Rocker arm pivot M6×0.5 (special nut) 14
Pivot locknut M8×1.25 30
Crankcase cover bolt M6×1.0 12
Muffler bolt M6×1.0 10
Air filter nut M6×1.0 8
Engine cover nut M6×1.0 6.5
Fuel tank bolt M6×1.0 10
Governor arm nut M6×1.0 10
Standard torque value
6
M5 bolt, nut 6
M6 bolt, nut 10
8.5 Standard dimensions and wear limits
Part Tool Standard dimension Wear limit
Cylinder Micrometer Inner diameter: 65.005-65.02
mm / 2.5592-2.5591 in.
Inner diameter: 65.165 mm /
2.5655 in.
Piston skirt Micrometer Outer diameter:
64.975-64.985 mm /
2.5580-2.5584 in.
Outer diameter: 64.845 mm /
2.5529 in.
Piston - cylinder Feeler gauge Clearance: 0.02-0.045 mm /
0.0007-0.0020 in.
Clearance: 0.120 mm / 0.0050
in.
Piston pin Micrometer Outer diameter:
12.992-12.998 mm /
0.05115-0.5117 in.
Outer diameter: 12.954 mm /
0.5100 in.
Piston pin bore Micrometer Inner diameter: 13.002-13.008
mm / 0.5118-0.51212 in.
Inner diameter: 13.048 mm /
0.5137 in.
Piston pin Feeler gauge Clearance: 0.004-0.016 mm /
0.00001-0.0006 in.
Clearance: 0.08 mm / 0.0031
in.
Top piston ring - second piston
ring
Feeler gauge Clearance: 0.015-0.045 mm /
0.0006-0.0018 in.
Clearance: 0.15 mm / 0.006 in.
Top piston ring Micrometer Width: 1.17 mm / 0.0460 in. Width: 1.04 mm / 0.0409 in.
Second piston ring Micrometer Width: 1.5 mm / 0.059 in. Width: 1.37 mm / 0.054 in.
Oil ring Micrometer Width: 2.5 mm / 0.0984 in. Width: 2.37 mm / 0.0933 in.
Openings in the piston rings Feeler gauge Inner diameter: 0.1-0.25 mm /
0.004-0.01 in.
Inner diameter: 1.0 mm / 0.04
in.
Hole for the piston pin in the
connecting rod
Micrometer Inner diameter: 13.006-13.017
mm / 0.5120-0.5125 in.
Inner diameter: 13.07 mm /
0.5146 in.
Hole for the crankshaft in the
connecting rod
Micrometer Inner diameter: 26.025-26.035
mm /1.0246-1.025 in.
Inner diameter: 26.07 mm /
1.0264 in.
Connecting rod Plastic gauge scale Oil clearance: 0.032-0.055
mm / 0.0013-0.0022 in.
Oil clearance: 0.120 mm /
0.0050 in.
6
For bolts and nuts that are not listed above, refer to standard torque values.
1425 - 001 - 03.06.2020 Technical data- 45