Filling Chain Oil Tank; Checking Chain Lubrication - Stihl MS 391 Safety Manual

Filling Chain Oil Tank

Preparations
N
Thoroughly clean the oil filler cap
and the area around it to ensure that
no dirt falls into the tank.
N
Position the machine so that the
filler cap is facing up.
N
Open the filler cap.
Fill up with chain oil.
N
Refill the chain oil tank every time
you refuel.
Take care not to spill chain oil while
refilling and do not overfill the tank.
STIHL recommends you use the STIHL
filler nozzle for chain oil (special
accessory).
N
Close the filler cap.
There must still be a small amount of oil
in the oil tank when the fuel tank is
empty.
MS 311, MS 391
If the oil level in the tank does not go
down, the reason may be a fault in the oil
supply system: Check chain lubrication,
clean the oilways, contact your dealer
for assistance if necessary STIHL
recommends that you have servicing
and repair work carried out exclusively
by an authorized STIHL servicing
dealer.
Checking Chain
Lubrication
The saw chain must always throw off a
small amount of oil.
Never operate your saw without
chain lubrication. If the chain runs
dry, the whole cutting attachment
will be irretrievably damaged
within a very short time. Always
check chain lubrication and the oil
level in the tank before starting
work.
Every new chain has to be broken in for
about 2 to 3 minutes.
After breaking in the chain, check chain
tension and adjust if necessary – see
"Checking Chain Tension".
English
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