Stihl FC 70 Product Instruction Manual - Page 23

Operating Instructions, Cleaning the Air Filter

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Engine does not start in warm start position < N Move the choke lever to g and continue cranking until the engine runs. If the engine does not start N Check that choke lever is in correct position. N Check that there is fuel in the tank and refuel if necessary. N Check that the spark plug boot is properly connected. N Repeat the starting procedure. Fuel tank run until completely dry N After refueling, press the fuel pump bulb at least five times - even if the bulb is filled with fuel. N Set the choke lever to suit the engine temperature. N Now start the engine. Operating Instructions 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 enginemounted components (ignition, carburetor) from thermal overload. After Finishing Work English Cleaning the Air Filter If there is a noticeable loss of engine power 3 2 1 N Move the choke lever (1) to

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FC 70 C
English
21
Engine does not start in warm start
position
<
N
Move the choke lever to
g
and
continue cranking until the engine
runs.
If the engine does not start
N
Check that choke lever is in correct
position.
N
Check that there is fuel in the tank
and refuel if necessary.
N
Check that the spark plug boot is
properly connected.
N
Repeat the starting procedure.
Fuel tank run until completely dry
N
After refueling, press the fuel pump
bulb at least five times – even if the
bulb is filled with fuel.
N
Set the choke lever to suit the
engine temperature.
N
Now start the engine.
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 periods – see "Storing the
Machine".
If there is a noticeable loss of engine
power
N
Move the choke lever (1) to
<
.
N
Turn the screw (2) in the filter
cover (3) counterclockwise until the
cover is loose.
N
Ease the filter cover (3) over the
choke lever and lift it away.
N
Clean away loose dirt from around
the filter.
Operating Instructions
Cleaning the Air Filter
1
547BA022 KN
2
3