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5.3- Guard against kickback
- This saw is equipped with a chain brake that will stop the chain in the event of kickback if
operating properly.
You must check the chain brake operation before each usage by running the saw at full the throttle
for 1-2 seconds and pushing the front hand guard forward. The chain should stop immediately with
the engine at full speed. If the chain is slow to stop or does not stop, replace the brake band and
clutch drum before use.
- It is extremely important that the chain brake be checked for proper operation before each use and
that the chain be sharp in order to maintain the kickback safety level of this saw. Removal of the
safety devices, inadequate maintenance, or incorrect replacement of the bar or chain may increase
the risk of serious personal injury due to kickback.
5.4- Working from a rope and harness
(With chain-saws intended for tree service)
This chapter sets out working practices to reduce the risk of injury from tree service chainsaws
when working at height from a rope and harness.
While it may form the basis of guidance and training literature, it should not be regarded as a
substitute for formal training.
5.5- General requirements working at height
Operators of tree service chainsaws working at height from a rope and harness should never work
alone. A competent ground worker trained in appropriate emergency procedures should assist
them.
Operators of tree service chainsaws for this work should be trained in general safe climbing and
work positioning techniques and shall be properly equipped with harnesses, ropes, strops,
karabiners and other equipment for maintaining secure and safe working positions for both
themselves and the saw.
5.6- Preparing to use the saw in the tree
The chainsaw should be checked, fuelled, started and warmed up by the ground worker before it is
sent up to the operator in the tree. The chainsaw should be fitted with a suitable strop for attaching
Note: careful daily inspection should be performed before use and after a drop
or shock to identify major defects.
Do not use the machine until the defects have been repaired.
Restrict working hours to a minimum and always take rest periods.
For proper use, after each work period take a rest period (for ex take a rest for
10 minutes after a work period of 30 minutes).
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