Operation; Fuel - Echo CS-310 Operator's Manual

CS-310
Adjusting Chain Tension
Always loosen sprocket guard nuts before turning the chain tension
adjuster, otherwise the sprocket guard and tensioner will be
damaged.
1. Release the cylinder cover latches, and remove the cylinder
cover. Remove spark plug lead.
2. Loosen sprocket guard nuts.
3. Hold the bar nose up, and turn the adjuster screw (A) clockwise
until chain contacts underside of the bar.
4. Tighten nuts with the bar nose held up.
5. Pull the chain around the bar by hand. Loosen the adjustment if
you feel tight spots.
Tighten guide bar nuts to 20 - 23 N•m (200 - 230 kgf•cm). 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.

OPERATION

Fuel

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 alternative fuels
may cause performance problems, loss of power, overheating, fuel vapor lock, and unintended
machine operation, including, but not limited to, improper clutch engagement. Alternative fuels may
also cause premature deterioration of fuel lines, gaskets, carburetors and other engine components.
X7503274200
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OPERATION
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