Echo CS-310, Service Manual

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SERVICE INFORMATION
CS-310
2
Cutting devices
Guide bar
Part No. 12A0CD3745 14A0CD3752 16A0CD3757
Called length in 12 14 16
Gauge in 0.050
Saw chain
Type OREGON 91VG / 91P
Number of drive links 45 52 57
Pitch in 3/8
Gauge in 0.050
1 SERVICE INFORMATION
1-1 Speci fi cations
Model CS-310
Dimensions Length* mm(in) 396 (15.59)
Width mm(in) 232 (9.13)
Height mm(in) 268 (10.55)
Dry weight* kg(lb) 4.0 (8.8)
Engine Type KIORITZ, air-cooled, two-stroke, single cylinder
Rotation Clockwise as viewed from the output end
Displacement cm
3
(in
3
) 30.5 (1.861)
Bore mm(in) 36.0 (1.417)
Stroke mm(in) 30.0 (1.181)
Compression ratio 6.7
Carburetor Type Diaphragm horizontal-draft with auto-return choke
Model Walbro WT-946
Venturi size-Throttle bore mm(in) 11.11 - 14.3 (0.437 - 0.562)
Ignition Type CDI (Capacitor discharge ignition) system
Digital magneto
Spark plug BPM8Y
Starter Type Automatic rewind
Rope diameter x length mm(in) 3.0 x 920 (0.12 x 36.2)
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-FC/FD
Tank capacity L (U.S. fl .oz.) 0.25 (8.5)
Exhaust Muf fl er type Spark arrestor muf fl er with catalyst
Clutch Type Centrifugal, 3-shoe slide with 3-tension spring
Guide bar / Saw chain lubrication type Pencil type Automatic oil pump
Oil Tank capacity L (U.S. fl .oz.) 0.26 (8.8)
Sprocket Type Spur
Number of teeth 6
Pitch in 3/8
* Without guide bar and saw chain.