• Make sure you have a firm footing:
Press the unit firmly against the ground with your left
hand on the fan housing. Your thumb should be under
the fan housing.
Do not stand or kneel on the drive tube.
Alternative method:
• Remove the chain guard. Hang the cutting attach-
ment on a branch so that it is held by the hook.
• Hold the unit firmly with your left hand around the fan
housing – your thumb under the fan housing.
The starting procedure is now as described in the Engine
instruction manual.
Operating Instructions
During operation
Check chain tension frequently!
A new chain has to be tensioned more often than one that
has been in use for some time.
Cold chain:
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 chapter “Tension-
ing the Saw Chain”. Chain at operating temperature: The
chain stretches and begins to sag. The drive links on the
underside of the bar must not come out of the bar groove
– the chain may otherwise jump off the bar.
Retension the chain – see chapter “Tensioning the Saw
Chain”.
Always slacken off the chain again after finishing
work. The chain contracts as it cools down. If it is
not slackened off, it may damage the gear shaft and
bearings.
After finishing work
• Slacken off the chain if you have retensioned it at op-
erating temperature during cutting work.
The chain contracts as it cools down. If it is not
slackened off, it may damage the gear shaft and
bearings.
Storing for longer period:
See chapter „Storing the Machine“.
Taking Care of Guide Bar
Turn the bar over –
every time you sharpen the chain – and every time you
replace the chain – this avoids one-sided wear, especial-
lly at nose and underside of the bar.
Regularly clean
1 = oil inlet hole
2 = oil passage
3 = bar groove
Checking and Replacing the Chain Sprocket
• Remove the chain sprocket cover, chain and guide bar.
Replace the chain sprocket:
−
after using two chains or sooner
−
if the wear marks (dimension deeper than 0.02in
(0.5mm) – the life of the a) on the sprocket are chain
would otherwise be reduced.
The service life of the chain sprocket is prolonged if
it is used with two chains in rotation.
GB-18
