Carburetor Adjustment - Echo CS-355T Operator's Manual

CS-355T
COMPONENT / SYSTEM
Yearly
Fuel Filter
Fuel Cap Gasket
IMPORTANT NOTE - Time intervals shown are maximum. Actual use and
your experience will determine the frequency of required maintenance.
MAINTENANCE PROCEDURE NOTES:
* Replacement is recommended based on the finding of damage or wear
during inspection.

Carburetor Adjustment

Every unit is run at the factory and the carburetor is set in compliance with
Emission Regulations. In addition, the carburetor is equipped with "H" (High
Speed) and ("L" (Low Speed) needle adjustment limiters that prevent
settings outside acceptable limits.
Engine Break-In
New engines must be operated a minimum duration of two tanks of fuel
break-in before carburetor adjustments can be made. During the break-in
period your engine performance will increase and exhaust emissions will
stabilize. Idle speed can be adjusted as required.
High Altitude Operation
This engine has been factory adjusted to maintain satisfactory starting and
durability performance up to 1,100 feet above sea level (ASL) (96.0 kPa). To
maintain proper engine operation above 1,100 feet ASL the carburetor
might need to be adjusted by an authorized service dealer.
If the engine is adjusted for operation above 1,100 feet ASL, the
carburetor must be re-adjusted when operating the engine below
1,100 feet ASL, otherwise severe engine damage can result.
1. Before adjusting carburetor clean or replace air filter and muffler "Spark
Arrestor Screen".
2. Make sure the bar and chain are properly adjusted.
3. Start engine and run several minutes to bring to operating temperature.
Flash choke twice during warm-up to clear any air from the fuel system.
X7503323507
© 01/2021 ECHO Incorporated
MAINTENANCE PROCEDURE
Inspect / Replace *
Replace *
MAINTENANCE
REQ'D
SKILL
LEVEL
1
1
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