Echo EA-410 Manual Del Operador página 71

20
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 330 m (1,100 feet) mean sea
level (MSL) (96.0 kPa and below). To maintain proper engine operation
and emission compliance above 330 m (1,100 feet) MSL the carburetor
may need to be adjusted by an authorized ECHO service dealer.
IMPORTANT
If the engine is adjusted for operation above 330 m (1,100 feet)
MSL, the carburetor must be re-adjusted when operating the engine
below 330 m (1,100 feet) MSL, otherwise severe engine damage
can result.
Level 2.
Tools required: Screwdriver, Tachometer
Parts required: None.
NOTE
Every unit is run at the factory and the carburetor is set in compli-
ance with emission regulations. This carburetor does not have accel-
eration and high speed adjustment needles.
1. Check idle speed and reset if necessary. Idle speed screw (A)
should be set to the specifications found on page 23, "Specifica-
tions" of this manual. Turn idle screw (A) clockwise to increase
idle speed; counter-clockwise to decrease idle speed.
WARNING
When carburetor adjustment is completed, the cutting attachment
should not turn at idle, otherwise serious personal injury may
result.
A