Use and Care Manual

CS-7310P SPECIFICATIONS
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© 10/20 ECHO Incorporated
SPECIFICATIONS
MODEL CS-7310
Length 477 mm (18.8 in.)
Width 249 mm (9.8 in)
Height 323 mm (12.7 in.)
Dry weight 6.7 kg (14.8 lb.) Without chain and guide bar
Engine Air-cooled two-stroke single cylinder
Displacement 73.5 mL (4.49 cu. in.)
Bore 51.0 mm (2.01 in.)
Stroke 36.0 mm (1.42 in.)
Compressions ratio 6.8:1
Carburetor Diaphragm type
Spark plug NGK BPMR8Y (Gap 0.4 - 0.5 mm [0.016 - 0.02 in])
Fuel tank capacity 800 mL (27.05 US. fl. oz.)
Gasoline/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 Adjustable automatic oiler
Chain oil capacity 360 mL (12.17 US. fl. oz.)
Starter system Automatic rewind starter
Clutch Centrifugal type
Sprocket type Floating Rim, 7-tooth, 3/8 in. pitch
Chain brake Automatic band brake type
Idle speed 3,000 RPM
Clutch engagement speed 4,200 RPM
Wide open throttle speed
(W.O.T.)
12,800 RPM
Chain tensioner Side access system
Guide bar 20 in (Optional 24, 28, 32)
Saw chain 72LPX / 72EXL / 73LPX / 73EXL
Standard features
Front hand guard, Rear hand guard, Anti-vibration
device, Spiked bumper, Throttle control lockout,
Chain catcher, Spark arrestor muffler,
Decompression device