Use and Care Manual

CS-4910 OPERATION
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Tighten guide bar nuts to 20-23 N•m (200 to 230 kgf•cm,
175-200 in•lbf). DO NOT over-tighten nuts. Damage to saw may
result.
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OPERATION
Fuel
Diesel fuels and alternative fuels, such as E-15 (15% ethanol),
E-85 (85% ethanol) or any fuels not meeting ECHO requirements
are NOT approved for use in ECHO 2-stroke gasoline engines.
Use of diesel or alternative fuels can cause performance
problems, loss of power, overheating, fuel vapor lock, and
unintended machine operation, including, but not limited to,
improper clutch engagement. Diesel or alternative fuels can
also cause premature deterioration of fuel lines, gaskets,
carburetors and other engine components.
Fuel Requirements
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