Operation Manual
33
CS-310
STORAGE AFTER USE
* Technical data subject to change without notice.
TECHNICAL DATA
• Inspect and adjust every part of the chain saw.
- Completely clean every part and repair if neces-
sary.
- Apply thin coating of oil on metal parts to prevent
rust.
• Remove chain and guide bar.
• Drain fuel tank, pull starter slowly a few times to
drain fuel from carburetor.
• Pour a small amount of clean motor oil into spark
plug hole, pull starter and crank the engine until
piston reaches: TOP DEAD CENTER.
• Store in a dry area, free from dust.
WARNING
Do not store in an enclosure where fuel fumes may
accumlateorreachanopenameorspark.
CAUTION
Do not lend or rent your chain saw without the
Instruction manual and Safety manual.
NOTE
• For future reference, you should keep this Instruction
manual and the Safety manual.
• If this Instruction manual or the Safety manual has
become illegible or is lost, please purchase a new one
from your ECHO dealer.
MODEL CS-310
Dimension L × W × H mm 396 × 232 × 268 (15.6 in. × 9.1 in. × 10.6 in.)
Mass Power head, dry kg 4.0 (8.8 lb.) Without chain and guide bar
Engine Type Air-cooled two-stroke single cylinder
Displacement mL (cm ) 30.5 (1.861 cu. in.)
Carburetor Diaphragm type
Magneto Flywheel magneto: CDI system
Spark plug NGK BPM8Y
Starter Recoil starter
Power transmission Automatic centrifugal clutch
Fuel Mixture ratio 50 : 1 ratio with ECHO Power Blend X™, ISO-L-
EGD (ISO/CD 13738) and JASO M345-FC/FD two-
stroke, air-cooled engine oil.
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.
Tank capacity L 0.25 (8.47 US. . oz.)
Oil Bar and chain ECHO bar and chain oil (or motor oil)
Tank capacity L 0.26 (8.81 US. . oz.)
Guide bar and See page 24 for Chain and Guide Bar Combination
saw chain
Lubrication Non-adjustable automatic oil pump
Engine speed Idle r/min 3,200
Clutch engagement r/min 4,200
Wide open throttle r/min 12,500
Standard Front hand guard, Rear hand guard,
features Anti-vibration device, Throttle control lockout,
Chain brake, Chain catcher, Spark arrestor mufer,
Kick guard, (Spiked bumper)