Stihl FS 250 R Product Instruction Manual - Page 51

Specifications - fs 250 rpm

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English / USA Specifications Engine Model FS 120 FS 200 FS 250 Single cylinder two-stroke engine Displacement: 1.88 cu.in (30.8 cm3) 2.22 cu.in (36.3 cm3) 2.45 cu.in (40.2 cm3) Bore: 1.38 in (35 mm) 1.50 in (38 mm) 1.57 in (40 mm) Stroke: 1.26 in (32 mm) 1.26 in (32 mm) 1.26 in (32 mm) Engine power to ISO 8893: 1.8 bhp (1.3 KW) 2.2 bhp (1.6 KW) 2.2 bhp (1.6 KW) at 9000 rpm at 9000 rpm at 9000 rpm Idle speed: Engine cutoff speed (nominal): Max. output shaft speed (cutting tool) - with bike handle - with loop handle 2,800 rpm 12,300 rpm 8,790 rpm 9,960 rpm 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 Ignition System Type: Electronic magneto ignition with electronic speed governor Spark plug (resistor type): Bosch WSR 6 F, NGK BPMR 7 A or Champion RCJ 6Y Electrode gap: 0.02 in (0.5 mm) Spark plug thread: M 14 x 1.25; 0.37 in long (9.5 mm) Fuel System Carburetor: All position diaphragm carburetor with integral fuel pump Air filter: Paper filter element Fuel tank capacity: 21.6 fl.oz (0.64 L) Fuel mix: See "Fuel" Rewind Starter Starter rope: Ø 0.11 in (3,0mm), 33.5 in ( 850 mm) long 50 FS 120, FS 120 R, FS 200, FS 200 R, FS 250, FS 250 R

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50
English / USA
FS 120, FS 120 R, FS 200, FS 200 R, FS 250, FS 250 R
Engine
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
Ignition System
Fuel System
Rewind Starter
Starter rope:
Ø 0.11 in (3,0mm), 33.5 in ( 850 mm)
long
Specifications
Model
FS 120
FS 200
FS 250
Idle speed:
2,800 rpm
Single cylinder two-stroke
engine
Engine cutoff speed
(nominal):
12,300 rpm
Displacement:
1.88 cu.in
(30.8 cm
3
)
2.22 cu.in
(36.3 cm
3
)
2.45 cu.in
(40.2 cm
3
)
Max. output shaft
speed (cutting tool)
Bore:
1.38 in (35 mm)
1.50 in (38 mm)
1.57 in (40 mm)
- with bike handle
8,790 rpm
Stroke:
1.26 in (32 mm)
1.26 in (32 mm)
1.26 in (32 mm)
- with loop handle
9,960 rpm
Engine power to ISO 8893:
1.8 bhp (1.3 KW)
at 9000 rpm
2.2 bhp (1.6 KW)
at 9000 rpm
2.2 bhp (1.6 KW)
at 9000 rpm
Type: Electronic magneto ignition with
electronic speed governor
Spark plug (resistor
type):
Bosch WSR 6 F,
NGK BPMR 7 A
or Champion
RCJ 6Y
Electrode gap:
0.02 in (0.5 mm)
Spark plug thread:
M 14 x 1.25;
0.37 in long
(9.5 mm)
Carburetor: All position diaphragm
carburetor with integral fuel pump
Air filter:
Paper filter
element
Fuel tank capacity:
21.6 fl.oz (0.64 L)
Fuel mix:
See "Fuel"