Exhaust System; Carburetor Adjustment - Echo PB-2520 Operator's Manual

MAINTENANCE
Cleaning Cylinder Fins
Blow compressed air through
crankcase intake grill and discharge
grill at area shown.

Exhaust System

See your dealer for maintenance.

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 and
durability performance up to 335 m (1,100 ft.) above sea level (ASL). To
maintain proper engine operation above 335 m (1,100 ft.) ASL the
carburetor may need to be adjusted by an authorized service dealer.
If the engine is adjusted for operation above 335 m (1,100 ft.) ASL,
the carburetor must be re-adjusted when operating the engine below
335 m (1,100 ft.) 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 dealer.
Before adjustment make sure that:
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PB-2520
X7501192101
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