SERVICE INFORMATION
GT-225
SRM-225
2
1 SERVICE INFORMATION
1-1 Speci
cations
Model
GT-225 SRM-225
Dimensions* Length
mm (in)
1371 (54.0)
1793 (70.6)
Width
mm (in)
315 (12.4)
251 (9.9)
Height
mm (in)
539 (21.2)
328 (12.9)
Dry weight*
kg (lb)
4.6 (10.1)
5.5 (12.1)
Engine
Type
KIORITZ, air-cooled, two-stroke, single cylinder
Rotation
Counterclockwise as viewed from the output end
Displacement cm
3
(in
3
)
21.2 (1.29)
Bore
mm (in)
32.2 (1.27)
Stroke
mm (in)
26.0 (1.02)
Compression ratio
5.9
Carburetor Type
Rotary type : Diaphragm, horizontal-draft, with purge bulb
Model
ZAMA RB-K93
Ignition
Type
CDI (Capacitor discharge ignition) system
Variable Slope Timing (VST) : Slope advance ignition
system combined with electronic speed governor
Spark plug
BPM8Y (CANADA : BPMR8Y)
Exhaust Muf
er type
Spark arrester muf
er with catalyst
Starter
Type
i-30
Rope diameter x length mm (in)
3.0 x 830 (0.12 x 32.7)
Fuel**
Type
Premixed two-stroke fuel
Mixture ratio
50 : 1 (2%)
Gasoline
Minimum 89 octane
Two-stroke engine oil
ISO-L-EGD (ISO/CD13738), JASO M345-FC/FD
Tank capacity
L (U.S.
.oz.)
0.44 (14.9)
Clutch
Type
Centrifugal, 2-shoe pivot
Handle
Type
Front
Loop handle
Rear
Integrated control grip
Integrated control grip
with throttle lock lever
Drive shaft Type
Flexible
Diameter - Length
mm
6.0 - 1219
6.15 - 1522
(in)
(0.24 - 48.0)
(0.24 - 59.9)
Housing
OD - ID
mm
22.25 - 19.05
25.0 - 22.0
(in)
(0.88 - 0.75)
(0.98 - 0.87)
Main pipe
Length mm (in)
1130 (44.5)
1500 (59.1)
Gear case Reduction ratio
---
1.4
Gear tooth
---
Spiral bevel gear
Lubrication
Lithium based grease or ECHO LUBE
TM
Cutter
Type
Nylon line cutter, 8-tooth blade
, 22-tooth blade
, Others
Pilot diameter for blade
mm(in)
Not available
Option : 20.0 (0.79)
Fastener type, size
mm
Not available
Left-hand thread nut, M10 x 1.25 pitch
Cutting rotation
Clockwise as viewed from top
Counterclockwise as viewed from top
OD: Outer diameter. ID: Inner diameter. * Without shoulder harness and Nylon line head.
** Refer to Operators manual.
Install blade conversion kit including metal shield when operating with metal blade.
