Adjusting Carburettor - Echo HC-1500 Operator's Manual

L : Low speed mixture adjuster
CAUTION
When starting, idle speed adjuster should be
adjusted not to move the blades.
When there is some trouble with the carburettor,
contact your dealer.
Recoil starter housing
Fins

ADJUSTING CARBURETTOR

(As Required)
Every unit is test run at the factory and the carburettor is
fine tuned for maximum performance.
Before adjusting carburettor, clean or replace air filter,
T : Idle speed adjuster
start engine and run several minutes to bring it to operating
temperature.
1.
2.
CLEANING CYLINDER FINS (Check
Periodically)
1. Carefully remove housing and clean dirt and dust
2. Reinstall housing.
CLEANING SILENCER AND EXHAUST
PORT (Check Periodically)
1. Carefully remove housing halves.
2. Remove and disassemble silencer.
3. Clean deposits from cylinder exhaust port and
Silencer
15
WARNING
WHEN CARBURETTOR ADJUSTMENT IS
COMPLETED, BLADES SHOULD NOT MOVE AT
IDLE, OTHERWISE SERIOUS PERSONAL INJURY
MAY RESULT.
Idle Speed Adjustment.
Stop engine. Turn low speed needle anticlockwise
until it stops.
Start engine and turn idle speed adjustment screw
clockwise until the blades begin to move, then turn
the screw anticlockwise until the blades stop
moving. Turn screw anticlockwise an additional 1/2
turn.
Accelerate to full throttle for 2 to 3 seconds to clear
excess fuel from engine then return to idle.
Accelerate to full throttle to check for smooth
transition from idle to full throttle.
from fins.
NOTE
Clogged fins will cause poor engine cooling.
silencer.
NOTE
Be careful not to scratch the cylinder or piston when
cleaning the cylinder exhaust port.
DANGER