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SPECIFICATIONS
QV-670
Mass
With bar and chain,
full fuel and oil
kg
8.7 (19.2 lb.)
Powerhead only, dry
kg
7.2 (15.9 lb.)
Engine
Type
Air-cooled two-stroke single cylinder
Displacement
mL (cm³) 66.7 (4.07 cu. in.)
Bore × Stroke
mm
50 × 34 (1.97 × 1.34 in.)
Compression ratio
7.6 : 1
Bearings
Heavy-duty, ball bearings on crank shaft,
matched caged needles on connecting rod and
piston pin.
Maximum engine speed
r/min
13,500 (no load)
Carburetor
Diaphragm type
Starter
Recoil starter
Power transmission
Automatic centrifugal clutch
Ignition system Type
Electronic: CDI with SAIS (sloped advance
ignition timing)
Spark plug
CHAMPION CJ-6Y
Spark plug gap
mm
0.6 - 0.7 (0.024 - 0.028 in.)
Fuel and
Gasoline octane rating
Mixture of gasoline (unleaded, 89 octane
engine
minimum) and 50 : 1 ECHO Power Blend™ two-
lubrication
stroke, air-cooled engine oil.
Fuel/oil mix
Use an approved type fuel container. Never mix
fuel directly in the saw tank. Do not smoke near
fuel. Pour half of the gasoline into the container,
then all of the oil. Mix thoroughly before adding
the remainder of the gasoline. Then mix
thoroughly again. Fill the saw tank with fuel and
tighten the fuel cap to prevent leakage. Wipe up
any spillage. Always move away a safe distance
from the fueling site before starting the engine.
NOTE: Use of non-recommended oils or
failure to follow above instructions may
result in engine malfunction and will void the
warranty.
Gasoline capacity
L
0.64 (21.64 US. fl. oz.)
Oil
Bar and chain
ECHO bar and chain oil (or motor oil)
Tank capacity
L
0.37 (12.5 US. fl. oz.)
Guide bar
Length
mm
305 (12 in.) angle bar with industrial sprocket nose
Gauge
mm
1 .6 (0.063 in.)
Sprocket
Rim size
mm
9.53 (3/8 in.) 7 teeth
Saw chain
Papco Firebrand Carbide
#75DG-50E, 400-S
Chain pitch
mm
9.53 (3/8 in.)
Drive link gauge
mm
1.6 (0.063 in.)
Chain speed at 9,500 r/min
m/s
21.1 (4,150 f/m)
Type
Automatic/adjustable and manual override
Bar lubricant
Detergent bar oil
Other features
Patented skid/stand for safer operation of
equipment, Large starter handle for use with
gloves, Chain brake, Anti-vibration system,
Throttle safety catch, Front and rear handles,
Chain catcher.
* Technical data subject to change without notice.