The hedge trimmers HS 75, 80, 85 replace the es-
tablished HS 72, 74 and 76 models. They have a
more powerful powerhead. With a displacement of
25.4 cm
3
(1.55 cu. in), these machines have a hig-
her torque; with 0.9 kW (1.2 HP), they are also more
powerful than their predecessors.
The fields of application and target groups for the
HS 75, 80, 85 are identical with those of the
HS 72, 74 and 76.
Two different carburetor types may be installed in
the new models:
a) The conventional WT carburetor (made by
Walbro) with two adjusting screws (H and L)
as in the past.
and
b) A fixed-nozzle carburetor (made by Zama)
without high-speed adjusting screw; this
carburetor already meets the stringent
US emission standards and is designed to
reduce CO and HC emissions.
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1. Technical description
2. Specifications
3. Special accessories for the user
4. Service accessories
5. Repairs
6. Replacement parts
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The main changes in comparison with the STIHL HS
72, 74, 76 are as follows:
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• Made up of five parts which are interconnected so
they cannot twist
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• Four-channel transfer ports (more effective prepa-
ration of the fuel mixture, optimum combustion, lo-
wer emission levels)
• Larger cooling area
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• With one or two adjusting screws
(see carburetor table)
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