Echo SRM-350ES User Manual
Page 2
SERVICE INFORMATION
SRM-330ES
SRM-350ES
2
1 SERVICE INFORMATION
1-1 Specifications
Model
SRM-330ES (L)
SRM-330ES (U)
SRM-350ES (L)
SRM-350ES (U
)
Dimensions Length*
mm(in)
1825 (71.9)
1830 (72.0)
1825 (71.9)
1830 (72.0)
Width
mm(in)
320 (12.6)
670 (26.3)
320 (12.6)
670 (26.3)
Height
mm(in)
275 (10.8)
473 (18.6)
275 (11.9)
473 (18.6)
Dry weight **
kg(lb)
7.1 (15.7)
7.2 (15.9)
7.1 (15.7)
7.2 (15.9)
Engine
Type
KIORITZ, air-cooled, two-stroke, single cylinder
Semi-automatic decompression
Rotation
Anticlockwise as viewed from the output end
Displacement
cm
3
(in
3
)
30.5 (1.861)
34.0 (2.075)
Bore
mm(in)
36.0 (1.417)
38.0 (1.496)
Stroke
mm(in)
30.0 (1.181)
30.0 (1.181)
Compression ratio
6.9 : 1
Carburettor
Type
Rotary type : Diaphragm, horizontal-draught, with primer (purge pump)
Model
Walbro WYJ-312A
Walbro WYJ-373A
Venturi size-Throttle bore mm(in)
12.2 - 12.2 (0.48 - 0.48)
10.5 - 10.5 (0.41 - 0.41)
Ignition
Type
TCI (Transistor controlled ignition) system
in a single integrated piece
Spark plug
BPMR7A
Starter
Type
ES (Effortless)- start
Rope diameter x length
mm(in)
3.8 x 1000 (0.15 x 39.8)
Fuel
Petrol
Minimum 89 octane petrol (RON)
Two-stroke engine oil
ISO-L-EGD (ISO/CD13738), JASO FC
Tank capacity
L (U.S.fl.oz.)
0.84 (28.4)
Clutch
Type
Centrifugal, 2 - shoe pivot
Handle
Type
Front Crescent loop
U-shaped
Crescent loop
U-shaped
w/cushion grip
w/cushion grip
Rear
Integrated control
- - -
Integrated control
- - -
grip w/cushion
grip w/cushion
Drive shaft
Type
Solid
Diameter - Length
mm(in)
8 - 1590 (0.31 - 62.6)
Housing
OD -ID mm(in)
28 - 24 (1.10 -0.94)
(Main pipe)
Length mm(in)
1530 (60.2)
Gear case
Reduction ratio
1.33
Gear tooth
Spiral bevel gear
Lubrication
Lithium based grease
Cutter
Type
Nylon line cutter, 3-tooth blade
†
, Others
Pilot diameter
mm(in)
25.4 (1.0)
Fastener type, size
mm
Left-hand thread nut, M10 x 1.25 pitch
Cutting rotation
Anticlockwise as viewed from top
OD: Outer diameter.
ID: Inner diameter.
* Without shoulder harness and cutter head.
** With standard cutter head, without shoulder harness.
†
Install and use U-shaped handle when operating with steel blade.