English / USA

Checking Chain Lubrication

143BA024 KN

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 oil level in tank before starting work.

Every new chain has to be broken in for about 2 to 3 minutes.

After breaking in chain, check chain tension and adjust if necessary – see “Checking Chain Tension”.

Chain Brake

The chain brake system on your saw has two functions:

:Standard STIHL chain brake and

:STIHL rear-handle-activated secondary braking system

The standard STIHL chain brake utilizes the front hand guard as the activating mechanism and is designed to stop the chain within fractions of a second. The secondary braking system, on the other hand, is designed to stop chain rotation within a second of you completely letting go of the rear handle.

To reduce the risk of personal injury or property damage during cutting, observe the characteristics that make this saw different from saws not equipped with a rear-handle-activated brake. Before operating the chainsaw for the first time, make sure you are familiar with how secondary braking system works. See chapter "Starting/Stopping the Engine".

Secondary chain brake activated by throttle trigger interlock

:When you let go of the rear handle, including the throttle trigger interlock lever.

Disengaging the secondary chain brake

:Press down the throttle trigger interlock lever. This releases the clutch drum and allows the chain to rotate.

38

MS 280 C