English / USA

Operating Instructions

If the engine doesn’t start:

If you did not move the Master Control lever to “Warm Start” nquickly enough after the engine began to fire, the combustion chamber has flooded.

1

2

KN

146BA010

 

:Loosen knob (1) in direction of arrow.

:Remove the carburetor box cover (2).

3

146BA009 KN

:Pull off the spark plug boot (3).

:Unscrew and dry off the spark plug.

:Set the Master Control lever to “Stop” position $

:Press down the interlock lever, open the throttle wide and, at the same time, crank the engine several times with the starter to clear the combustion chamber.

:Refit the spark plug and connect the spark plug boot –

reassemble the other parts.

:Set Master Control lever to “Warm Start” n– even if engine is cold.

:Press in decompression valve.

: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.

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).

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MS 270, MS 270 C, MS 280, MS 280 C