Operating Instructions - Stihl MS 290 Manual De Instrucciones

English / USA
1
If the engine doesn't start:
If you did not move the Master Control
lever to "Warm Start" n quickly enough
after the engine began to fire, the
combustion chamber has flooded.
: set the Master Control lever to
$d.
: Turn the twist lock above the rear
handle counterclockwise
– slot vertical.
:
lift off the carburetor box cover to the
rear.
:
Pull the prefilter (1) upward and out.
38
2
: Pull off the spark plug boot (2).
: Unscrew and dry off the spark plug.
: Crank the engine several times
with the starter to clear the
combustion chamber.
:
Refit the spark plug and connect the
spark plug boot (press it down
firmly) – reassemble all other parts
:
Set Master Control lever to
n Warm Start even if engine is
cold.
: Press in decompression valve.
: 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.
Do not make the mixture leaner to
achieve an apparent increase in
power – this could damage the
engine – see "Adjusting
Carburetor".
Always disengage the chain brake
before opening the throttle. Running
the engine at higher revs with the
chain brake engaged (saw chain at
a standstill) will quickly damage the
engine and chain drive (clutch,
chain brake).
MS 290, 310, 390