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Technical Information · issue 43 of 1996

Dry HD air filter

IssueTI 43/1996
Engine families 1122, 1124, 1128

Part changes (1)

WasBecomesWhat the bulletin says
0000 120 1650 0000 120 1652 The original HD air filter 0000 120 1650, which needs to be impregnated with oil, will be replaced by the new version 0000 120 1652.

Full text

Page 1 of 2

TI 43/1996 page 1
Technical Information

                                                                                43.96

Chainsaw Models =======================044, 046==========- Series 1128
                                       064, 066==========- Series 1122
                                       084===============- Series 1124

Dry HD air filter

The original HD air filter 0000 120 1650, which
needs to be impregnated with oil, will be replaced
by the new version 0000 120 1652.
A fleece filter material is used in the new HD filter.
This material provides excellent filtering efficiency
                                                          fo              OIL
in the dry condition.
Filters with this fleece do not need to be im-
pregnated with oil.

The new filter is identified by the pictogram shown
in the illustration.

Cleaning intervals / procedure

When there is a noticeable loss of engine power
during cutting:

                                                                                        145TI018 KN
• Clean out the felt prefilter 0000 141 0300.

After cleaning the felt prefilter several times, or if

there is still a noticeable lack of power even
though the felt prefilter is clean:
• Remove felt prefilter from HD filter
    (on 044, 064, 066, 084, also take foam

    element 0000 124 0800 out of HD filter).
• Clean out the HD filter. If possible, blow out

    carefully with compressed air from the clean
    air side.

In case of stubborn dirt or caked filter fleece:
• Wash parts of filter in a clean, non-flammable
    solution (e.g. warm soapy water).
)Technical Information 43.96  -  Page 2

Service life of filter

The special structure of the filter material greatly
enhances filtering efficiency. On the other hand,
it helps trap fine dirt particles, which can no longer
be removed by cleaning. The intervals between
cleanings become shorter after an extended
period of use. Filters should be replaced once the
intervals between cleanings are not long enough
for practical usage.

If the filter has been thoroughly cleaned after a
long period of operation and there is still a

noticeable loss of power during cutting, install a

new HD filter.

Note on installation

The inner foam element 0000 124 0800 included in

the scope of supply is only required for models
044, 064, 066 and 084. It must be removed from
the HD filter before it is installed in machines with
the new STIHL HD system (currently 046 and 088).                       fo
The filter comes with an instruction sheet that
describes installation and cleaning procedures.

6XPPDU\

Item      Part Name                                      Original                New             Rem.

                                                         version                 version

          HD air filter                                  0000 120 1650           0000 120 1652   1)

Modification to be introduced: in progress

5HPDUNV
1) Original version of part no longer available from factory

Last Technical Information on model(s):                  044, 046             38.96
                                064, 066                 38.96
                                084                            38.96

 1996 Andreas Stihl                                           Andreas Stihl - D1/MTK-st
                                                               Technical Documentation                5919

Page 2 of 2

TI 43/1996 page 2

Extracted from the manufacturer's 2012 service catalogue. Most of these PDFs embed fonts with a shifted character map, so the text above was recovered rather than copied — read it as a faithful but imperfect transcription, and treat the page image above each block as the authority where the two disagree — the figures exist only there, because they are vector drawings that text extraction cannot keep.

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