TILLER/CULTIVATOR 21

OPERATOR'S MANUAL

CARBURETOR ADJUSTMENT

Non-Emission Models (Without Limiter Caps)

Level2

Tools Required: Screwdriver,Tachometer(ECHOP/N90051130017).

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 tines begin to turn, then turn screw out CCW (counter clockwise) until tines stop turning. Turn screw out, CCW an additional 1/4 turn.

WARNING DANGER

Tines 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 2-1/2 turns. Turn HI (A) needle out CCW 2-3/4 turns.

Fine Tuning

(Requires Accurate Tachometer)

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 (B) needle.

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

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

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

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

richer.(4)

3.HI speed adjustment.

Adjust HI (A) needle with tachometer. Refer to Wide Open Throttle RPM settings listed in "Specifications" on page 10.

4.Check idle speed and reset if necessary. If tachometer is available, idle speed should be set to the specifications found on page 10 "Specifications" of this manual.

AB

C

WARNING DANGER

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