Stihl FS 90 User Manual

53FS 90, FS 90 R
English / USA
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
STIHL single cylinder four-stroke
engine with gas-oil lubrication
Displacement: 1.73 cu.in (28.4 cm
3
)
Bore: 1.50 in (38 mm)
Stroke: 0.98 in (25 mm)
Engine power to ISO 8893:
1.3bhp (0.95KW)
Idle speed: 2,800 rpm
Engine cut-off speed: 10,500 rpm
Max. output shaft speed
(cutting tool drive): 7,500 rpm
Valve clearance
Inlet valve: 0.004 in (0.10 mm)
Exhaust valvel: 0.004 in (0.10 mm)
Fuel tank capacity
18.0 fl.oz (0.53 l)
Spark plug (resistor type)
Bosch USR 7AC
– Electrode gap 0.02 in (0.5 mm)
Starter rope
0.12 in (3.0 mm) dia.,
33.5 in (850 mm) long
Weight
(dry, without cutting tool and deflector)
FS 90 with bike handle:
12.8 lbs (5.8 kg)
FS 90 R with loop handle:
12.1 lbs (5.5 kg)
Contact your STIHL dealer for
information regarding special
accessories that may be available for
your product.
Specifications Special Accessories

Stihl FS 90 Specifications

General

Engine Displacement	28.4 cc
Fuel Type	Gasoline
Handle Type	Loop handle
Shaft Type	Straight
Fuel Capacity	0.53 l
Weight	5.8 kg
Cutting Attachment	Autocut 25-2
Engine Power	0.95 kW (1.27 bhp)