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8.3 Chain brake
The chain brake is a safety mechanism which is triggered via the front hand guard (Fig.
1/Item 2). If kickback causes the chainsaw to suddenly jerk back then the chain brake trips
and stops the saw chain in less than 0.12 seconds. You must check the operation of the
chain brake on a regular basis. To do this, fold the hand guard (Fig. 1/Item2) forward and
briefly switch the chainsaw on.The saw chain must not start up.Pull back the front hand guard
(Fig. 1/Item 2) until it engages to release the chain brake.
Caution: Never use the saw if the safety equipment is not working properly. Never try to
repair safety related protection systems yourself
– always have any work done by our service department or by a similarly qualified workshop.
Hand guard
The front hand guard (which also acts as the chain brake at the same time) (Fig. 1/Item 2)
and the rear hand guard (Fig. 1/ Item 14) protect against finger injuries resulting from contact
with the saw chain if the chain breaks because it is overloaded.
9. WORKING WITH THE CHAINSAW
9.1 Preparations
To ensure that you can work safely, check the following points before every use:
Condition of the chain saw
Inspect the chainsaw before the start of work for damage to the housing, the power cable, the
saw chain and the cutter rail. Never use a chainsaw which is obviously damaged.
Oil container
Fill level of the oil container. Even while working, keep checking that sufficient oil is in the
system. To avoid damaging the chainsaw, never run the saw if there is no oil in the system or
if the oil drops below the "min" mark (Fig. 10). On average, a single filling will last around 15
minutes depending on the number of pauses in cutting and the loads involved.
Saw chain
Tension of the saw chain, condition of the cutting elements. The sharper the chainsaw, the
easier and more controllable it is to operate the chainsaw. The same also applies to the chain
tension. Again, while working also check the chain tension every 10 minutes in order to
increase your safety. New saw chains in particular often tend to expand more.
Chain brake
Check the operation of the chain brake as described in the chapter "Safety devices" and then
release it.
Safety clothing
Always wear appropriate tight-fitting safety clothing like special trousers which protect against
cuts, protective gloves and safety shoes.
Hearing protection and protective goggles.
When felling trees or performing forest work, always wear a protective helmet with integral
face and hearing protection. This will offer protection against falling branches and any
branches if they spring back.
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