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CS-670
CS-670
Dimension L × W × H mm 435 × 236 × 302
Mass Power head, dry kg 6.5 Without chain and guide bar
Engine Type Air-cooled two-stroke single cylinder
Displacement mL (cm³) 66.7
Carburetor Diaphragm type
Magneto Flywheel magneto: CDI system
Spark plug NGK BPMR7A
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-20 or E-85.
Tank capacity L 0.64
Oil Bar and chain ECHO bar and chain oil (or motor oil)
Tank capacity L 0.37
Guide bar and
See page 22 for Chain and Guide Bar Combination
saw chain
Lubrication Adjustable automatic oil pump and manual oil pump
Engine speed Idle r/min 2800 - 3000
Clutch engagement r/min 3800
Wide open throttle r/min 12500 - 14000
Standard Front hand guard, Rear hand guard,
features Anti-vibration device, Spiked bumper,
Throttle control lockout, Chain brake,
Chain catcher, Spark arrestor muffler, Kick guard
* 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
necessary.
- 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 accumlate or reach an open flame
or spark.
CAUTION
Do not lend or rent your chain saw without
the Operator’s manual and Safety manual.
NOTE
• For future reference, you should keep this
Operator’s manual and the Safety manual.
• If this Operator’s manual or the Safety manual
has become illegible or is lost, please purchase
a new one from your ECHO dealer.
STORAGE AFTER USE