Stihl FS 450 Instruction Manual - Page 31

Operating Instructions

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English / USA Operating Instructions 5 If the engine still does not start: : Move the slide control to 0 c : Pull off the spark plug boot (5). : Unscrew and dry off the spark plug. : Open the throttle wide. : Crank the engine several times with the starter to clear the combustion chamber. : Refit the spark plug. Connect the spark plug boot (press it down firmly). : Move the slide control to START. : Set the choke knob to e - even if the engine is cold. : Now start the engine. 271BA019 KN Throttle cable : Check adjustment of the throttle cable - see "Adjusting the Throttle Cable". Tank run until dry and then refueled : Press the fuel pump bulb at least five times - even if bulb is filled with fuel. 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 enginemounted components (ignition, carburetor) from thermal overload. After finishing work Wait for engine to cool down. Drain the fuel tank. Store the machine in a dry place. Check tightness of nuts and screws (not adjusting screws) at regular intervals and retighten as necessary. 30 FS 300, FS 350, FS 400, FS 450, FS 480

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30
English / USA
FS 300, FS 350, FS 400, FS 450, FS 480
If the engine still does not start:
:
Move the slide control to
0
c
:
Pull off the spark plug boot
(
5
).
:
Unscrew and dry off the spark plug.
:
Open the throttle wide.
:
Crank the engine several times with
the starter to clear the combustion
chamber.
:
Refit the spark plug. Connect the
spark plug boot (press it down
firmly).
:
Move the slide control to
START
.
:
Set the choke knob to
e
–
even if the engine is cold.
:
Now start the engine.
Throttle cable
:
Check adjustment of the throttle
cable – see "Adjusting the Throttle
Cable".
Tank run until dry and then refueled
:
Press the fuel pump bulb at least
five times – even if bulb is filled with
fuel.
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
Wait for engine to cool down. Drain the
fuel tank. Store the machine in a dry
place. Check tightness of nuts and
screws (not adjusting screws) at regular
intervals and retighten as necessary.
271BA019 KN
5
Operating Instructions