CS-590 OPERATION
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© 09/2020 ECHO Incorporated
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.
6. Assemble components in reverse order.
7. Keep chain properly tensioned at all times.
Note: All chains require frequent adjustments.
Winter Operation
The Air Shutter is used to prevent carburetor trouble in winter.
1. Remove the air cleaner cover
(A).
2. Pull the air shutter (B) to COLD
[ ] position.
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.
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