FR 480 C
English
27
During break-in period
A factory-new machine should not be
run at high revs (full throttle off load) for
the first three tank fillings. This avoids
unnecessary high loads during the
break-in period. As all moving parts
have to bed in during the break-in
period, the frictional resistances in the
engine are greater during this period.
The engine develops its maximum
power after about 5 to 15 tank fillings.
During Operation
After a long period of full throttle
operation, allow the engine to run for a
short while at idle speed so that engine
heat can be dissipated by the flow of
cooling air. This protects engine-
mounted components (ignition,
carburetor) from thermal overload.
After Finishing Work
Storing for a short period: Wait for the
engine to cool down. Empty the fuel tank
and keep the machine in a dry place,
well away from sources of ignition, until
you need it again. For longer out-of-
service perionds – see "Storing the
Machine".
If there is a noticeable loss of engine
power
N
Loosen the screw (1).
N
Remove the filter cover (2).
N
Clean away loose dirt from around
the filter and inside the filter cover.
N
Remove and check the filter
element (3) – replace if dirty or
damaged.
N
Install the filter element in the filter
cover.
N
Refit the filter cover.
N
Tighten down the screw.
General Information
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
N
Stopping the Engine
N
Mount the cutting attachment.
N
Check the air filter and replace it if
necessary.
N
Check that the throttle cable is
properly adjusted – readjust if
necessary – see chapter on
"Adjusting the Throttle Cable".
Operating Instructions
Cleaning the Air Filter
1
2
3
271BA071 KN
Adjusting the Carburetor