Use and Care Manual

CS-4910 SPECIFICATIONS
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© 05/22 ECHO Incorporated
• Drain fuel tank completely. Press purge bulb six to seven times to remove
remaining fuel from carburetor then drain the tank again. Close choke,
start and run the engine until it stops due to lack of fuel.
• Allow engine to cool. Remove the spark plug lead from the spark plug.
Remove the spark plug. Pour 7 cc (0.25 oz.) of fresh, clean, two-stroke
engine oil into the cylinder through the spark plug hole.
• Store in a dry area, free from dust.
Do not store in an enclosure where fuel fumes may accumulate
or reach an open flame or spark.
Do not lend or rent your chainsaw without the Operator’s
Manual.
Note:
• For future reference, you should keep this Operator’s Manual.
• If this Operator’s Manual becomes illegible or is lost, please contact
your dealer, or go to www.echo-usa.com.
SPECIFICATIONS
MODEL CS-4910
Length 395 mm (15.6 in.)
Width 250 mm (9.8 in)
Height 290 mm (11.4 in.)
Dry weight
(without chain and guide
bar)
4.7 kg (10.4 lb.)
Engine Air-cooled two-stroke single cylinder
Displacement
50.2 ml (3.06 in.
3
)
Bore 44.0 mm (1.73 in.)
Stroke 33.0 mm (1.30 in.)
Compressions ratio 7.2:1
Carburetor Diaphragm type
Spark plug NGK BPMR8Y (Gap 0.65 mm [0.026 in.])
Fuel tank capacity 500 ml (16.91 US. fl. oz.)
Gasoline/Oil Ratio 50:1