Operation Manual

27HT 73
english / USA
Exhaust emissions are controlled by the
design of the fundamental engine
parameters and components (e.g.
carburation, ignition, timing and valve or
port timing) without the addition of any
major hardware.
The carburetor is set at the factory to
provide an optimum fuel-air mixture
under all operating conditions.
Standard setting
: Check chain tension.
: Check air filter and install a new one
if necessary.
: Check spark arresting screen and
clean or replace as necessary.
: Back off the idle speed screw (LA)
counterclockwise until the end of
the screw (see arrow) just
disappears. Then turn the screw
6 full turns clockwise.
Adjusting idle speed
: Carry out stardard setting.
: Start and warm up the engine.
Motor Management Adjusting the Carburetor
LA
380BA008 KN
380BA013 KN