63
SRM-250/250SI
E
N
G
L
I
S
H
D
E
U
T
S
C
H
I
T
A
L
I
A
N
O
SRM-250 (SI)
L
U
Mass :
unit without cutting attachment, empty tank
kg
5.4 (5.6)
5.7 (5.9)
unit with specified cutting attachment, empty tank
kg
5.6 (5.8)
6.1 (6.3)
unit with specified cutting attachment, full tank
kg
5.9 (6.1)
6.4 (6.6)
Volume : fuel tank
L
0.4
Cutting attachment :
nylon line head
F-4/10
-
line diameter
mm
3.0
-
line length
m
2 × 1 line
-
thread
Left-handed M10 × 1.25
-
specified blade diameter
mm
-
230
specified blade thickness
mm
-
2.0
number of cutting teeth
-
3
blade centre hole diameter
mm
-
25.4
blade rotational speed at maximum allowable
engine speed
r/min
-
10000
Gear ratio : gear ratio and lubrication
1.36 reduction and good quality lithium grease
Rotational direction of output shaft seen
from above :
Anticlockwise
External dimensions :
length
mm
1755 (1785)
1760 (1790)
width
mm
340
670
height
mm
285
460
Engine :
type
Air cooled two stroke single cylinder
engine displacement
mL(cm
3
)
23.6
maximum shaft brake power, measured in
accordance with ISO 8893
kW
0.735
engine speed at maximum engine power
r/min
7000
recommended maximum engine speed
r/min
10000
output shaft speed
r/min
-
recommended engine idling speed
r/min
2900
carburettor
Diaphragm type
ignition
Flywheel magneto - CDI system
spark plug
NGK BPMR7A
starter
Recoil starter (SRM-250SI ;
START)
clutch
Automatic centrifugal clutch
Fuel :
Regular grade petrol. Minimum 89 Octane unleaded
petrol is recommended. Do not use fuel containing
methyl alcohol or more than 10 % of ethyl alcohol.
oil
Two stroke, air-cooled engine oil. ISO-L-EGD Standard
(ISO/CD 13738), JASO FC, FD grade and ECHO
Premium 50 : 1 oil.
ratio
50 : 1 (2 %)
fuel consumption at maximum engine power
L/h
0.70
specific fuel consumption at maximum
engine power
g/(kW
•
h)
705
Sound pressure level : (EN 27917) LpAav =
dB(A)
93 (93)
90.3 (90.3)
Guaranteed sound power level :
(2000/14/EC) L
WA
=
dB(A)
107 (107)
107 (107)
Vibration levels : (ISO 7916)
idling
m/s
2
3.6 (2.0)
3.9 (2.2)
racing
m/s
2
4.9 (7.8)
2.6 (4.3)
GB
SPECIFICATIONS
Specifications, descriptions and illustrative material in
this literature are as accurate as known at the time of
publication, but are subject to change without notice.
Illustrations may include optional equipment and
accessories, and may not include all standard
equipment.