Stihl MS 171 Technical Information page 7

Technical Information 27.2013
5.2 Contact spring
The previous contact spring (1) 1139 442 1600 is
replaced by the new contact spring (2)
1139 442 1601.
The new contact spring 1139 442 1601 has
changed geometrically and unlike the previous
contact spring 1139 442 1601, it is not heat treated.
The previous contact spring 1139 442 1600 is
brown-yellow, the new contact spring
1139 442 1601 is silver colored and is marked
"01A".
1
Left: previous contact spring 1139 442 1600
Right: new contact spring 1139 442 1601
5.3 Summary – ignition module, wiring harness, contact spring
Item Part Name
1 Ignition module
2 Wiring harness
3 Engine housing (Standard);
including Item 5
4 Engine housing (Easy2Start™);
including Item 5
5 Contact spring
Modification to be introduced : continuously
Remarks
1) Previous version of part no longer available from factory
2) Previous version of part remains available for older models
3) New version of part can also be used for older machines
TI_27_2013_30_01_01.fm
2
01A
Spare parts/service notes
The new contact spring 1139 442 1601 can be used
for versions with a previous ignition module
1139 400 1307 and new ignition module
1139 400 1311.
The previous contact spring 1139 442 1600 must
not be used for versions with a new ignition module
1139 400 1311.
The previous contact spring 1139 442 1600 is no
longer available as a spare part.
Previous New
1139 400 1307 1139 400 1311
1139 440 3000 1139 440 3001
1139 020 3006 1139 020 3006
1139 020 3007 1139 020 3007
1139 442 1600 1139 442 1601
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Rem.
2)
2)
1) 3)