SERVICE INFORMATION
CS-271T
2
Cutting devices
Guide bar
Part No. 10A4CD3740 12A4CD3745
Called length in 10 12
Gauge in 0.043
Saw chain
Number of drive links 40 45
Pitch in 3/8
Gauge in 0.043
1 SERVICE INFORMATION
1-1 Specications
Model CS-271T
Dimensions Length* mm(in) 257 (10.12)
Width mm(in) 228 (8.98)
Height mm(in) 210 (8.27)
Dry weight* kg(lb) 3.0 (6.6)
Engine Type
YAMABIKO, air-cooled, two-stroke, single cylinder
gasoline engine
Rotation Clockwise as viewed from the output end
Displacement cm
3
(in
3
) 26.9 (1.641)
Bore mm(in) 35.0 (1.378)
Stroke mm(in) 28.0 (1.102)
Compression ratio 6.6
Carburetor Type Diaphragm horizontal-draft with acceleration pump
Model Walbro WT-1008
Venturi size-Throttle bore mm(in) 11.11-14.3 (0.437-0.563)
Ignition Type CDI (Capacitor discharge ignition) system
Digital Magneto
Spark plug BPM8Y (CANADA: BPMR8Y)
Starter Type Automatic rewind starter
Rope diameter x length mm(in) 3.5x700 (0.14x27.6)
Fuel Type Premixed two-stroke fuel
Mixture ratio 50 : 1 (2 %)
Gasoline Minimum 89 octane gasoline
Two-stroke air cooled engine oi
l
ISO-L-EGD (ISO/CD13738), JASO M345-FD
Tank capacity L (U.S..oz.) 0.24 (8.1)
Exhaust Mufer type
Spark arrester mufer
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 (U.S..oz.) 0.16 (5.4)
Auto oiler Type Clutch related type
Sprocket Type Spur
Number of teeth 6
Pitch in 3/8
* Without guide bar and saw chain.
Oregon Saw chain 90SG
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