Cooling System - Echo PB-2155 Operator's Manual

18
Final Adjustment
IMPORTANT
Limiter caps prevent exceeding emission limits and over rich
adjustment, but not over lean adjustment, which can cause
engine failure: Do not exceed recommended high speed engine
rev 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 carburettor chambers.
3. Run at idle and accelerate to check for smooth transition from idle
to high speed; if engine hesitates, turn L adjuster anticlockwise 1/8
turn at a time until acceleration is smooth.
4. Adjust T adjuster to 3,000 r/min, using tachometer.
NOTE
When there is some trouble with the carburettor, contact your
distributor or dealer.
COOLING SYSTEMS
Level 2.
Tools required: 19 mm Spark Plug deep socket, 3 mm Allen wrench,
Phillips Screwdriver, Pointed Wood Stick, Cleaning Brush, 25 mm - 50
mm 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.
Cleaning Grille
Remove accumulated debris from crankcase intake grille above the fuel
tank.
Cleaning Cylinder Fins
1. Remove spark plug.
2. Remove engine cover (seven screws) and clean cylinder fins to
allow cooling air to pass freely.
INTAKE
GRILLE