32
6. 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 hesitates,
turn LO needle (B) CCW an additional 1/8 turn and repeat accelera-
tion. Continue adjusting until smooth acceleration results.
7. Check HI speed RPM at W.O.T. (Wide Open Throttle). HI speed
RPM should be set to the specifications found on Page 12
"Specifications" of this manual for the type of cutting attachment
on this unit.
8. Check idle speed and reset if necessary. If a tachometer is avail-
able, idle speed should be set to the specifications found on page
12 "Specifications" of this manual.
WARNING DANGER
When carburetor adjustment is completed, the cutting attachment
should not turn at idle, otherwise serious personal injury may
result.
CARBURETOR ADJUSTMENT
Non Emission Models (Without Limiter Caps)
Tools Required: Screwdriver, Tachometer (ECHO P/N 90051130017).
NOTE
If carburetor has limiter caps follow "Carburetor Adjustment"
procedures for Type 1E models on previous page.
Idle Speed Adjustment
Turn "idle" speed adjustment screw (C) CW (clockwise) until cutting
attachment begins to turn, then turn screw out CCW (counter clock-
wise) until attachment stops turning. Turn screw out, CCW an addi-
tional 1/4 turn.
WARNING DANGER
Cutting attachment must not turn when unit is idling, otherwise
serious personal injury may result.
Basic Setting
1. Stop engine and turn both LO (B) and HI (A) needles in, CW until
they stop and are lightly seated.
Important
DO NOT over tighten needles. Forcing them to tighten will damage
the carburetor.
2. Turn LO (B) needle out, CCW 1-1/8 turns. Turn HI (A) needle out
CCW 1-1/8 turns.
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