If the engine does not start

The master control lever was not returned from the position cold start l to warm start nin time, the engine may be flooded.

NMove the master control lever to the stop position 0

NRemove the spark plug – see "Spark plug"

NDry spark plug

NCrank the engine several times with the starter – to clear the combustion chamber

NReplace the spark plug – see "Spark plug"

NSet the master control lever to warm start n– even if the engine is cold

NRestart the engine

When the fuel tank has run completely empty and then been refueled

NPull the starter rope several times to prime the fuel line

NRestart the engine

Operating Instructions

During the 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 unnecessarily 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 shortblock are greater during this period. The engine develops its maximum power after about 5 to 15 tank fillings.

During work

Do not make the mixture leaner to achieve an apparent increase in

power – this could damage the engine – see "Adjusting the Carburetor".

Open the throttle only when the chain brake is off. Running the

engine at high revs with the chain brake engaged (chain locked) will quickly damage the shortblock and chain drive (clutch, chain brake).

Check chain tension frequently

A new saw chain must be retensioned more frequently than one that has been in use already for an extended period.

English

Chain cold

Tension is correct when the chain fits snugly against the underside of the bar but can still be pulled along the bar by hand. Retension if necessary – see "Tensioning the Saw Chain".

Chain at operating temperature

The chain stretches and begins to sag. The drive links must not come out of the bar groove on the underside of the bar – the chain may otherwise jump off the bar. Retension the chain – see "Tensioning the Saw Chain".

The chain contracts as it cools down. If it is not slackened off, it

can damage the crankshaft and bearings.

After a long period of full-throttle 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

NSlacken off the chain if you have retensioned it at operating temperature during work.

Always slacken off the chain again after finishing work. The chain

contracts as it cools down. If it is not slackened off, it can damage the crankshaft and bearings.

MS 201, MS 201 C

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