CS-310
SPECIFICATIONS
X7503275401
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© 02/2019 ECHO Inc.
SPECIFICATIONS
* Technical data subject to change without notice.
Model
CS-310
Length
396 mm (15.6 in.)
Width
232 mm (9.1 in.)
Height
273 mm (10.7 in.)
Dry weight
4.0 kg (8.8 lb.) Without chain and guide bar
Engine
Air-cooled two-stroke single cylinder
Displacement
30.5 mL (1.861 cu. in.)
Bore
36.0 mm (1.417 in.)
Stroke
30.0 mm (1.181 in.)
Compressions ratio
6.7:1
Carburetor
Diaphragm type
Spark plug
NGK BPMR8Y (Gap 0.65 mm [0.026 in.])
Fuel tank capacity
250 mL (8.45 US. fl. oz.)
Fuel/Oil Ratio
50:1
Gasoline
Use 89 octane unleaded. Do not use fuel
containing methyl alcohol, more than 10% ethyl
alcohol or 15% MTBE. Do not use alternative
fuels such as E-15 or E-85.
Oil
ISO-L-EGD (ISO/CD 13738) and JASO M345-
FD two-stroke, air-cooled engine oil.
Oiling system
automatic oiler
Chain oil capacity
260 mL (8.8 US. fl. oz.)
Starter system
Automatic rewind starter
Clutch
Centrifugal type
Sprocket type
Spur type, 6-tooth, 3/8 in. pitch
Chain brake
Automatic band brake type
Idle speed
3,200 RPM
Clutch engagement speed 4,200 RPM
Wide open throttle speed
(W.O.T.)
12,500 RPM
Chain tensioner
Side access system
Guide bar
12, 14, 16 in
Saw chain
91PX/91VG
Standard features
Front hand guard, Rear hand guard, Anti-
vibration device, Throttle control lockout, Chain
catcher, Spark arrestor muffler, Tip guard,
(Spiked bumper; Option)