HEDGE CLIPPER 29

OPERATOR'S MANUAL

CARBURETOR ADJUSTMENT

Non Emission Models (without limiter caps)

Tools required: Screwdriver,Tachometer(ECHOP/N99051130017).

NOTE

If carburetor has limiter caps follow "Carburetor Adjustment" procedures for Emission models on previous page.

Idle Speed Adjustment

Turn "idle" speed adjustment screw (C) CW (clockwise) until blades begin to move, then turn screw out CCW (counter clockwise) until blades stop moving. Turn screw out, CCW an additional 1/4 turn.

WARNING DANGER

Blades must not move 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 needle (B) out, CCW 1-1/4 turns. Turn HI needle (A) out CCW 2-3/4 turns.

Fine Tuning

(Requires Accurate Tachometer ECHO P/N 99051130017)

1.Start engine and allow to warm to operating temperature (minimum 2 - 3 minutes) varying engine speed from idle to full throttle.

2.Always begin fine tuning with LO needle (B).

a.Lean drop-off - With engine idling, turn LO needle (B) slowly CW (in) to lean drop-off point. RPM will increase, then abruptly drop-off. (1) Note this position.

b.Rich drop-off - With engine idling, slowly turn LO needle (B) CCW (out) to rich drop-off point. RPM will increase then gradually slow and drop-off. (2) Note this position.

c.Final setting - Set needle at mid point between lean rich drop-off points. (3)

d.Turn 1/8 turn CCW (out) making mixture slightly richer. (4)

3.High speed adjustment.

Adjust HI needle (A) with tachometer to achieve the specifications found on page 14 "Specifications" of this manual.

4.Check idle speed and reset if necessary. Using a tachometer, idle speed should be set to the specification found on page 14 "Specifi- cations" of this manual.

WARNING DANGER

When carburetor adjustment is completed blades should not move at idle, otherwise serious personal injury may result.

SHC-1700, 2100 TYPE 1

A

C

AB

C

SHC-2400

HCA-2400

TYPE1

TYPE1

(3)

(4)

(2)

(1)