The Chain Brake; Engaging The Chain Brake - Stihl MSA 120 C Instruction Manual

English
► Turn the oil filler cap counterclockwise until it can be
removed.
► Remove the oil filler cap and fill the tank with chain oil.
► Take care not to spill chain oil while refilling the tank.
► Do not overfill the tank. Leave approximately 0.5 in.
(13 mm) of air space.
To close the tank:
► Position the oil filler cap on the oil tank filler neck and
press it down while turning it clockwise until it is tight.
38

15 The Chain Brake

15.1 Engaging the Chain Brake

WARNING
The chain brake will operate only if it has been properly
maintained and the front hand guard has not been modified,
@ 6.2.
WARNING
No chain brake device prevents kickback. This device is
designed to reduce the risk of kickback injury, if activated, in
certain kickback situations. For the chain brake to reduce
the risk of kickback injury, it must be properly maintained
and in good working order, @ 6.2.
In the event of a kickback, the chain brake is designed to
engage if the left hand contacts the front hand guard and
pushes it forward.
The chain brake is also designed to be activated by the
inertia of the front hand guard if the forces are sufficiently
high. When the brake is activated by inertia, the hand guard
accelerates toward the bar nose, even if your hand is not
behind the hand guard, e.g., during a felling back cut.
Engaging the chain brake locks the chain. To manually
engage the chain brake:
► Push the front hand guard to the
front handle.
15 The Chain Brake
position, away from the
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