English
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.
22
All manuals and user guides at all-guides.com
Adjusting the Carburetor
H
LA
The carburetor has been set at the
factory to provide an optimum fuel-air
mixture under most operating
conditions.
Adjusting idle speed
Engine stops while idling
Turn the idle speed screw (LA)
N
slowly clockwise until the engine
runs smoothly.
Cutting tool rotates when engine is idling
Turn the idle speed screw (LA)
N
slowly counterclockwise until the
cutting attachment stops moving.
Winter Operation
At temperatures below +10 °C
Pre-heating carburetor
L
Moving a shutter causes heated air to be
drawn in from around the cylinder and
mixed with cold air in order to prevent
carburetor icing.
An arrow on the shroud (1) shows the
position of the shutter (2) for summer or
winter operation. Key to symbols:
–
–
2
1
Symbol "Sun" = summer operation
Symbol "Snowflake" = winter
operation
FS 410 C K