Testing The Controls; Testing Saw Chain Lubrication - Stihl MSA 120 C Instruction Manual

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18.2 Testing the Controls

Before starting work, confirm that the trigger switch
lockout (1) and the trigger switch (2) are undamaged and
functioning properly.
Trigger Switch Lockout (1) and Trigger Switch (2)
WARNING
To reduce the risk of serious or fatal injuries, keep hands,
feet and other parts of the body away from the chain. Do not
touch the saw chain while the battery is inserted. Never
touch moving chain with your hand or any part of your body,
@ 5.5.2. Keep bystanders out of the area while testing the
controls.
To test the controls:
► Remove the battery.
► Attempt to depress the trigger switch.
If the trigger switch can be depressed without first
depressing the trigger switch lockout, take the chain saw
to an authorized STIHL servicing dealer to be repaired
before use.
42
1
2
► Insert the battery and hold the chain saw firmly with both
hands, your left hand on the front handle and your right
hand on the rear handle. Release the chain brake and
switch on the chain saw by depressing the trigger switch
lockout and trigger switch.
If the chain does not start rotating, engage the chain brake
and remove the battery. Take the chain saw to an
authorized STIHL servicing dealer to be repaired before
use.
► Insert the battery and hold the chain saw firmly with both
hands, your left hand on the front handle and your right
hand on the rear handle. Release the chain brake and
switch on the chain saw by depressing the trigger switch
lockout and trigger switch. Then release the trigger switch.
If the saw chain does not stop rotating after you release
the trigger switch, engage the chain brake and remove the
battery. Take the chain saw to an authorized STIHL
servicing dealer to be repaired before use.

18.3 Testing Saw Chain Lubrication

WARNING
Never operate your saw without bar and chain lubrication. If
the chain runs dry, the cutting attachment will be damaged
beyond repair within a very short time. A damaged chain
may break, resulting in severe or fatal personal injury.
Always check chain lubrication and the oil level in the tank
before starting work and periodically during work.
To confirm that the chain oil is flowing properly:
► Insert the battery, @ 16.1.
► Disengage the chain brake, @ 15.2.
► Point the guide bar toward a bright surface.
► Switch on the chain saw, @ 17.1.
The chain should throw off a small amount of oil.
If the chain oil cannot be seen, check the oil level and refill
the tank as necessary.
Refill the tank as necessary.
► Test the chain lubrication again.
18 Checking the Chain Saw
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