Echo WP-1000, WP-1000 T1E (Non Emissions Models Without Limiter Caps), Idle Speed Adjustment, Basic Setting, Fine Tuning (Requires Accurate Tachometer)

(Non Emissions Models Without Limiter Caps)

1. Before adjusting the carburetor, clean or replace the air lter and

spark arrester screen.

2. Fill pump housing with clean water.

3. Start engine and run for several minutes to reach operating tem-

perature.

Idle Speed Adjustment

Basic Setting

1. Stop engine and turn both LO (B) and HI (A) needles in, CW until

they stop and are lightly seated.

2. Turn LO (B) needle out, CCW 1-1/4 turns. Turn HI (A) needle out

CCW 1-1/4 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 ne 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 on "Specications" page.

4. Check idle speed and reset if necessary. If tachometer is available,

idle speed should be set to the specications found on "Specica-

tions" page of this manual.