Tightening Torques; Standard Dimensions And Wear Limits - Husqvarna HS 139A Workshop Manual

8.4 Tightening torques

Item
Connecting rod bolt
Flywheel nut
Rocker arm pivot
Pivot locknut
Crankcase cover bolt
Muffler bolt
Air filter nut
Engine cover nut
Fuel tank bolt
Governor arm nut
6
Standard torque value

8.5 Standard dimensions and wear limits

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