SERVICE INFORMATION
2
CS-2511WES
251Ws
1 SERVICE INFORMATION
1-1 Specications
Dimensions Length* mm(in) 400 (15.7)
Width mm(in) 213 (8.4)
Height mm(in) 210 (8.3)
Dry weight* kg(lb) 2.6 (5.7)
Engine Type YAMABIKO, air-cooled, two-stroke, single cylinder
Rotation Clockwise as viewed from the output end
Displacement cm
3
(in
3
) 25.0 (1.525)
Bore mm(in) 35.0 (1.378)
Stroke mm(in) 26.0 (1.024)
Compression ratio 7.9
Carburetor Type Diaphragm horizontal-draft
Model Walbro WT-1230
Venturi size-Throttle bore mm(in) 11.11 - 14.3 (0.437 - 0.563)
Ignition Type
CDI system, Digital magneto
with PI (Proportional integral) Controller
Spark plug NGK CMR7H-10
Exhaust Mufer type
Spark arrester mufer with catalyst
Starter Type ES (Effortless-Start) / S (Soft-start)
Rope diameter x length mm(in) 3.0 x 720 (0.12 x 28.3)
Fuel Type** Mixed two-stroke fuel
Mixture ratio 50 : 1 (2 %)
Gasoline Minimum 89 octane petrol
Two-stroke air cooled engine oi
l
ISO-L-EGD (ISO/CD13738), JASO FC/FD
Tank capacity L (UK..oz.) 0.19 (6.4)
Clutch Type Centrifugal type, 3-shoe slide with 3-tension spring
Guide bar / Saw chain lubrication type Adjustable automatic oil pump
Oil Tank capacity L (UK..oz.) 0.14 (4.7)
Auto oiler Type Clutch driven type
Sprocket Type Spur
CDI: Capacitor discharge ignition
* Without guide bar and saw chain.
** Premixed alkylate fuel for 2-stroke can be used.
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