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 Operator’s manual.
†
Install blade conversion kit including metal shield when operating with metal blade.
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