Echo CS-310 Operator's Manual page 57

CS-310
Model
Fuel/Oil Ratio
Gasoline
Oil
Oiling system
Chain oil capacity
Starter system
Clutch
Sprocket type
Chain brake
Idle speed
Clutch engagement speed 4,200 RPM
Wide open throttle speed 12,500 RPM
Chain tensioner
Guide bar
Saw chain
Standard features
X7533271300
© 11/23 ECHO Incorporated
50:1
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 E85.
ISO-L-EGD (ISO/CD 13738) and JASO M345-
FD two-stroke, air-cooled engine oil.
Automatic oiler
260 ml (8.8 US. fl. oz.)
Automatic rewind starter
Centrifugal type
Spur type, 6-tooth, 3/8 in. pitch
Automatic band brake type
3,200 RPM
Side access system
12, 14, 16 in.
91PX/91VG
Front hand guard, Rear hand guard, Anti-
vibration device, Throttle control lockout, Chain
catcher, Spark arrester muffler
SPECIFICATIONS
CS-310
57