Technical Information · issue 56 of 2005
Fuel return hose
IssueTI 56/2005
Full text
Page 1 of 3
STIH)
Technical Information 56.2005
Hedge trimmer STIHL HS 81 R – Series 4237
Hedge trimmer STIHL HS 81 T – Series 4237
Hedge trimmer STIHL HS 86 R – Series 4237
Hedge trimmer STIHL HS 86 T – Series 4237
Fuel return hose
The fuel return hose (1) is 7.5 in (190 mm) long. The hose must be pushed fully home on the
carburetor connector (3) (arrow).
The hose is secured with the new hose clip
4205 122 2500 (2).
TI_56_2005_30_01_01.fm englisch / English USA
)m~ge 2 Technical Information 56.2005
Service notes
. Damaged hoses must be replaced. . Push the fuel return hose onto the nipple (2) of
the fuel tank connector. Do not use any sharp-
. Ensure that the fuel return hose (1) is 7.5 in
edged pliers for this purpose.
(190 mm) long – previously published lengths
are no longer valid.
. Cut a 7.5 in (190 mm) length of hose from
endless hose 0000 930 2802.
. Route the fuel return hose as illustrated.
. Wet both ends of the hose with Press Fluid
OH 723 0781 957 9000.
. Wet the nipple (2) on the fuel tank connector and
the carburetor connector (3) with Press Fluid
OH 723.
Note on Press Fluid OH 723
Press Fluid OH 723 0781 957 9000 must be used.
Press Fluid OH 723 produces a lubricant film which
makes assembly easier. The lubricant evaporates
after a short time and the hose is seated securely. . Slide the hose clip (4) 4205 122 2500 approx.
1.2 in (30 mm) onto the fuel return hose (1).
Never use fuel or oil as lubricant. Fuel and oil do not
evaporate and the hose may work loose.
TI_56_2005_30_01_01.fm Page 2 of 3
Technical Information 56.2005 Page 3
. Push the fuel return hose onto the carburetor . Fit hose clip (4) 4205 122 2500 on the
connector until it is fully home (arrow). connector near the end of the hose with needle
nose pliers, turning the clip as illustrated.
. Check that the hose clip (4) is secure.
. Ensure that the hose is not damaged – a
damaged hose must always be replaced.
Summary
Item Part name Previous New Remarks
1 Hose clip --- 4205 122 2500
2 Hose 2.2x5.4x1 m 0000 930 2802 0000 930 2802
3 Hose 2.2x5.4x190 mm -*- -*- 1) 2)
4 Press Fluid OH 723 0781 957 9000 0781 957 9000
Remarks
1) Part is not available separately as a spare part
2) Part must be cut to a length of 7.5 in (190 mm) from hose 0000 930 2802. Previously published lengths
are no longer valid.
Last Technical Information on the hedge trimmers STIHL HS 81 R/T and HS 86 R/T: 43.2005
© ANDREAS STIHL AG & Co. KG, 2005 Technical Documentation
D1/MTK-ru
TI_56_2005_30_01_01.fm Page 3 of 3
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.