16
English
BR 420
:
Fit the spark plug and reconnect the
spark plug boot.
:
Move the stop switch to
#
:
Turn the choke knob to
e
even if the engine is cold.
:
Now start the engine.
Fuel tank run until dry and then
refueled
:
Pull the starter rope several times to
prime the fuel line.
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 engine to run for a while
at idle speed so that the heat in the
engine can be dissipated by flow of
cooling air. This protects engine-
mounted components (ignition,
carburetor) from thermal overload.
After finishing work
Storing for short period:
Wait for engine to cool down. Drain the
fuel tank and keep the unit in a dry place,
away from sources of ignition, until you
need it again.
Storing for a long period:
see chapter "Storing the Machine".
Dirty air filters reduce engine power
increase fuel consumption and make
starting more difficult.
If there is a noticeable loss of engine
power
:
Turn choke knob to
g
:
Release the screws (
1
) and pull
off the filter cover (
2
).
Operating Instructions
Cleaning the Air Filter
1
373BA017 KN
2
1
