English
Motor Management
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.
16
All manuals and user guides at all-guides.com
Adjusting the Carburetor
General Information
L
H
3/4
1
LA
The carburetor comes from the factory
with a standard setting.
This setting provides an optimum
fuel-air mixture under most operating
conditions.
With this carburetor it is only possible to
adjust the high speed screw within fine
limits.
Standard Setting
:
Shut off the engine.
:
Inspect cutting blades and clean if
necessary (clean, move freely, not
warped).
:
Check the air filter and clean or
replace if necessary.
:
Turn high speed screw (H)
counterclockwise (max.
far as stop.
:
Carefully screw the low speed
screw (L) down onto its seat. Then
open it one turn counterclockwise
:
Start and warm up the engine.
:
Adjust idle speed with the idle speed
screw (LA) so that the cutting
blades do not run.
3
/
turn) as
4
HS 45