WORKING TECHNIQUES
•
•
a lack of control of the saw such that it is more liable
to contact climbing lines and operators body
(particularly the left hand and arm)
Freeing a trapped saw
If the saw should become trapped during cutting,
operators should:
loosing control from insecure work position resulting
in contact with the saw (unexpected movement during
operation of the saw)
•
switch off the saw and attach it securely to the tree
inboard (i.e. towards the truck side) of the cut or to a
separate tool line.
Securing the work position for two-handed use
•
•
pull the saw from the kerf whilst lifting the branch as
necessary.
To allow the operator to hold the saw with both hands,
they should as general rule, aim for secure work position
where they are operating the saw at:
if necessary, use a handsaw or second chain saw to
release the trapped saw by cutting a minimum of 30
cm away from the trapped saw.
•
•
hip level when cutting horizontal sections.
solar plexus level when cutting vertical sections.
Whether a handsaw or a chainsaw is used to free a stuck
saw, the release cuts should always be outboard (toward the
tips of the branch), in order to prevent the saw being taken
with the section and further complicating the situation.
Where the operator is working close into vertical stems
with a low lateral forces on their work position, then a good
footing may be all that is needed to maintain a secure
work position. However as operators move away from the
stem, they will need to take steps to remove or counteract
the increasing lateral forces by, for example, a re-direct of
the main line via a supplementary anchor point or using
an adjustable strop direct from the harness to a
supplementary anchor point.
Basic cutting technique
WARNING! Never use a chain saw by
holding it with one hand. A chain saw is
not safely controlled with one hand; you
can cut yourself. Always have a secure,
firm grip around the handles with both
hands.
!
Gaining a good footing at the working position can be
assisted by use of a temporary foot stirrup created from
an endless sling.
General
Starting the saw in the tree
•
•
Always use full throttle when cutting!
When starting the saw in the tree, the operator should:
a) apply the chain brake before starting.
Reduce the speed to idle after every cut (running the
engine for too long at full throttle without any load, i.e.
without any resistance from the chain during cutting,
can lead to serious engine damage).
b) hold saw on either the left or right of the body when
starting:
1
on the left side hold the saw with the left hand on the
front handle and thrust the saw away from the body
while holding the pull starter cord in the other hand.
•
•
Cutting from above = Cutting on the pull stroke.
Cutting from below = Cutting on the push stroke.
Cutting on the push stroke increases the risk of kickback.
See instructions under the heading How to avoid kickback.
2
on the right side, hold the saw with the right hand on
either handle and thrust the saw away from the body
while holding the pull starter cord in the left hand.
Terms
Cutting = General term for cutting through wood.
Limbing = Cutting branches off a felled tree.
The chain brake should always be engaged before
lowering a running saw onto its strop. Operators should
always check the saw has sufficient fuel before
undertaking critical cuts.
Splitting = When the object you are cutting breaks off
before the cut is complete.
One-hand use of the chainsaw
There are five important factors you should consider
before making a cut:
Operators should never use a chain saw onehanded.
Operators should never:
1
2
Make sure the cutting equipment will not jam in the
cut.
•
cut with the kickback zone at the tip of the chainsaw
guide bar
•
•
•
‘hold and cut’ sections.
attempt to catch falling sections.
Cut in the tree when he/she is only secured with one
rope, always use 2 secured lines.
Make sure the object you are cutting will not split.
•
check condition of harness, belt and ropes at regular
frequent intervals.
24
– English
| Categories | Chainsaw Manuals, Husqvarna Chainsaw Manuals |
|---|---|
| Tags | Husqvarna T435 |
| Model Year | 2008, 2009 |
| Download File |
|
| Document Type | Operator's Manual |
| Language | English |
| Product Brand | Husqvarna, Chainsaw |
| Document File Type | |
| Publisher | husqvarna.com |
| Wikipedia's Page | Husqvarna |
| Copyright | Attribution Non-commercial |
(0 votes, average: 0 out of 5)