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English / USA
HS 81 R, HS 81 T
EPA / CEPA:
The Emission Compliance Period
referred to on the Emissions
Compliance Label indicates the number
of operating hours for which the engine
has been shown to meet Federal
emission requirements.
Category:
A = 300 hours,
B = 125 hours,
C = 50 hours
CARB:
The Emission Compliance Period used
on the CARB-Air Index Label indicates
the terms:
Extended = 300 hours,
Intermediate = 125 hours,
Moderate = 50 hours
Moderate = 50 hours
Engine
Ignition System
Fuel System
Cutting blade sharpening angle
45° to horizontal
Weight (complete unit)
Contact your STIHL dealer for
information regarding special
accessories that may be available for
your product.
Single cylinder two-stroke engine
Displacement: 1.39 cu.in
(22.7 cm
3
)
Bore: 1.34 in
(34 mm)
Stroke: 0.98 in
(25 mm)
Engine power to
ISO 8993: 0.90 bhp
(0.7 kW)
Idle speed: 2,800 rpm
Specifications
Typ: Electronic magneto ignition
Spark plug
(suppressed): Bosch USR 7 AC
Electrode gap: 0.02 in (0.5 mm)
Carburetor: All position diaphragm
carburetor with integral fuel pump
Fuel tank capacity: 0.97 US pt
(0.46 l)
Fuel mix: See “Fuel”
HS 81 R/24" 12.1 lbs (5.5 kg)
HS 81 R/30" 12.6 lbs (5.7 kg)
HS 81 T/20" 11.0 lbs (5.0 kg)
HS 81 T/24" 11.5 lbs (5.2 kg)
HS 81 T/30" 11.9 lbs (5.4 kg)
Special Accessories
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