Echo PB-2400 User Manual

IMPORTANT
Limiter caps prevent exceeding C.A.R.B. and E.P.A. emission
limits and over rich adjustment, but not over lean adjustment,
which can cause engine failure:  Do not exceed recommended
HI speed engine R.P.M. during operation, or for long periods
during adjustment.

1.

Start engine, run at idle for one minute.

2.

Complete warm up by running at full throttle for 5 minutes,
operating choke twice to clear air from carburetor chambers.

3.

Run at idle and accelerate to check for smooth transition from
idle to high speed; if engine hesitates, turn LO speed screw (B)
counterclockwise 1/8th of a turn at a time until acceleration is
smooth.

4.

Adjust idle screw (A) to 3000 R.P.M., using tachometer.

Level 3.
Tools required:  3/4" Spark Plug deep socket, 3 MM Allen wrench,
Phillips Screwdriver, Pointed Wood Stick, Cleaning Brush, 1"-2"
medium bristle paint brush.

Parts Required:  None if you are careful.

IMPORTANT
To prevent overheating and engine seizure, cooling air comes
through the grille and is pushed by a cooling fan through the
cylinder fin area to an opening in the front of the engine cover,
taking away combustion heat.  The grille and cylinder fins must
be kept clean of grass, dust and any debris.  Engine failure due to
lack of this "Normal Maintenance" is not covered by warranty.

Remove accumulated debris from crankcase intake grille (A) above the
fuel tank.

1.

Remove spark plug.

2.

Remove engine cover (three screws) and clean cylinder fins to
allow cooling air to pass freely.