MAINTENANCE ES-250
38 X7501182906
© 9/2018 ECHO Inc.
Carburetor Adjustment
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, emission, and durability
performance up to 1,100 feet above
sea level (ASL) (96.0 kPa). To
maintain proper engine operation and emission compliance above 1,100
feet ASL the carburetor may
need to be adjusted by an authorized ECHO
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 may result.
Level 2.
Note: Every unit is run at the factory and the carburetor is set in
compliance with emission regulations. Carburetor
adjustments, other than idle speed, must be performed by an
authorized ECHO dealer.
Before adjustment make sure that:
• Air filter is clean and properly installed.
• Spark arrestor screen is free of carbon.
• Blower pipes are installed.
1. Start engine, run at idle for one minute.
2. Complete warm up by running at full throttle for 5 minutes, operating
choke twice to clear air from carburetor chambers.
Parts Required: None
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