Taking Care Of The Guide Bar - Stihl MS 171 Instruction Manual

English
Chain cold
Tension is correct when the chain fits
snugly against the underside of the bar
and 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 – the chain may otherwise
jump off the bar. Retension the chain –
see "Tensioning the Saw Chain".
Always slacken off the chain after
finishing work. The chain
contracts as it cools down. If it is
not slackened off, it can damage
the crankshaft and bearings.
After long period of full-throttle
operation
Allow 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
N Slacken off the chain if you have
retensioned it at operating
temperature during cutting work.
The chain contracts as it cools
down. If it is not slackened off, it
can damage the crankshaft and
bearings.
36
Storing your saw for a short period
Wait for the engine to cool down. To
avoid condensation, fill the fuel tank and
keep the machine in a dry place, well
away from sources of ignition, until you
need it again.
Storing for a long period
See chapter on "Storing the Machine"
Taking Care of the Guide
Bar
1
N Turn the bar over – every time you
sharpen the chain and every time
you replace the chain – this helps
avoid one-sided wear, especially at
the nose and underside of the bar.
N
Regularly clean the oil inlet hole (1),
the oilway (2) and the bar
groove (3).
N Measure the groove depth – with
the scale on the filing gauge (special
accessory) – in the area used most
for cutting.
MS 171, MS 181, MS 181 C, MS 211, MS 211 C
2
3