Warning – Echo CS-360T Serial C04412001001 - C04412999999 User Manual

Page 22

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22

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. Dur-

ing 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 op-

eration and emission compliance above 1,100 feet ASL the car-

buretor may need to be adjusted by an authorized ECHO service

dealer.

IMPORTANT

If the engine is adjusted for operation above 1,100 feet ASL,

the carburetor must be re-adjusted when operating the en-

gine below 1,100 feet ASL, otherwise severe engine damage

may result.

BEFORE MAKING ADjUSTMENTS:

• The correct spark plug must be clean and properly gapped.

• The air filter element must be clean and properly installed.

• The muffler spark arrestor screen and exhaust port must be

clear of carbon.

• The standard bar and chain combination must be installed to the

power head, and properly tensioned.

WARNING

When carburetor adjustment is completed, the saw chain

should not move at idle, otherwise serious personal injury may

result.

LOW ALTITUDE ADjUSTMENT

1. Start engine and run for several minutes to reach operating

temperature.

2. Stop engine.

3. Start engine and turn the high-speed needle (A) rich (CCW)

until the engine runs between 13,500 and 14,500 RPM. Then

turn the low-speed needle (B) rich (CCW) until the engine does

not hesitate when accelerated.

DO NOT REMOVE LIMITER CAPS!

4. Idle Speed Adjustment.

• Turn “idle” speed adjustment screw (C) CW until the saw chain

begins to move, then turn the screw CCW until saw chain stops

moving. Turn screw CCW an additional 1/4 turn.

5. Accelerate to full throttle for 2-3 seconds to clear excess fuel

from engine then return to idle. Accelerate to full throttle to

check for smooth transition from idle to full throttle. If engine

stops or stalls after full warm up return the unit to your autho-

rized ECHO dealer for adjustment.

A

B

C

lo

hi

A

B

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