Engine Management; Adjusting The Carburetor - Stihl BR 500 Manual De Instrucciones

English
Remove the filter element (3).
N
Replace dirty or damaged filters.
N
Fit the new filter in the filter housing.
N
Fit the filter cover.
N
Insert the screws and tighten them
N
down firmly.
22

Engine 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.

Adjusting the Carburetor

Machines without Adjustable Carburetor
On certain machine versions it is no
longer necessary to adjust the
carburetor. Such machines have no
setting symbol on the shroud.
H
These machines have been set at the
factory to provide an optimum fuel-air
mixture in all locations and operating
conditions.
Adjusting idle speed
Engine stops while idling:
Turn the idle speed screw (LA)
N
slowly clockwise until the engine
runs smoothly.
Machines with Adjustable Carburetor
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 and low speed
screws within fine limits.
BR 500, BR 550, BR 600