Kickback; Working Behavior/Method Of Working - Makita EA3200S Instruction Manual
Petrol chain saw
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Also See for EA3200S:
- Original instruction manual (244 pages) ,
- Operator's manual (140 pages) ,
- Instruction manual (100 pages)
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‑
Put the chain saw into operation only as described in this
instruction manual (Fig. 9). Other starting methods are not
allowed.
‑
When starting the chain saw it must be well supported
and securely held. The guide bar and chain must not be in
contact with any object.
When working with the chain saw always hold it with
‑
both hands. Take the back handle with the right hand and
the tubular handle with the left hand. Hold the handles
tightly with your thumbs facing your fingers.
‑
CAUTION: When releasing the throttle lever the chain
will keep on running for a short period of time (free‑
wheeling).
‑
Continuously ensure that you have a safe footing.
‑
Hold the chain saw such that you will not breathe in the
exhaust gas. Do not work in closed rooms (danger of
poisoning).
Switch off the chain saw immediately if you observe
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any changes in its operating behavior.
The engine must be switched off before checking the
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chain tension, tightening the chain, replacing it or
clearing malfunctions (Fig. 10).
‑
When the sawing device is hit by stones, nails or other
hard objects, switch off the engine immediately and check
the sawing device. If the chain saw is exposed to force,
such as through impact or falling, inspect the entire chain
saw for proper functioning.
‑
When stopping work or leaving the working place, switch
off the chain saw (Fig. 10) and put it down such that
nobody is endangered.
● Maintenance
● Stopping work
● Refuelling
● Transport
● Sharpening the chain
● Putting out of function
CAUTION: Do not put the overheated power chain
saw in dry grass or on any inflammable objects.
The muffler is very hot (danger of fire).
‑
CAUTION: Oil dropping from the chain or guide bar after
having stopped the saw chain will pollute the soil. Always
use an appropriate base.
3-6. Kickback
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When working with the chain saw dangerous kickbacks
may occur.
‑
Kickback occurs when the upper part of the end of the
guide bar inadvertently touches wood or other hard
objects (Fig. 11).
‑
This causes the saw to be thrown back toward the user
with great force and out of control. Risk of injury!
In order to prevent kickback, follow these rules:
‑
Only specially‑trained persons should perform plunge
cuts, i.e., piercing timber or wood with the tip of the saw!
‑
Never apply the end of the bar when starting to make a
cut.
‑
Always observe the end of the guide bar. Be careful when
continuing an already started cut.
‑
When starting to cut the chain must be running.
‑
Ensure that the chain is always sharpened correctly. Pay
special attention to the height of the depth limiter.
‑
Never cut several branches at the same time. When
cutting a branch ensure that no other branch is touched.
‑
When crosscutting a trunk be aware of the trunks next to
it.
3-7. Working behavior/Method of working
‑
Only use the chain saw during good light and visibility
periods. Be aware of slippery or wet areas, and of ice and
snow (risk of slipping). The risk of slipping is extremely
high when working on recently peeled wood (bark).
‑
Never work on unstable surfaces. Make sure that there
are no obstacles in the working area, risk of stumbling.
Always ensure that you have a safe footing.
‑
Never saw above your shoulder height (Fig. 12).
‑
Never saw while standing on a ladder (Fig. 12).
‑
Never climb up into trees to perform sawing with the chain
saw.
‑
Do not work leaning too far over.
‑
Guide the chain saw in such a way that no part of your
body is within the elongated swivelling range of the saw
(Fig. 13).
‑
Use the chain saw for sawing wood only.
‑
Avoid touching the ground with the chain saw while it is
still running.
‑
Never use the chain saw for lifting up or removing pieces
of wood or other objects.
‑
Remove foreign objects such as sand, stones and nails
found within the working area. Foreign objects may
damage the sawing device and can cause dangerous
kickback.
‑
When sawing precut timber use a safe support (sawing
jack, Fig. 14). Do not steady the workpiece with your foot,
and do not allow anyone else to hold or steady it.
‑
Secure round pieces against rotation.
For cutting down trees or performing crosscuts the
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spike bar (Fig. 14, Z) must be applied to the wood to
be cut.
‑
Before performing a crosscut firmly apply the spike bar to
the timber, only then can the timber be cut with the chain
running. For this the chain saw is lifted at the back handle
and guided with the tubular handle. The spike bar serves
as a centre of rotation. Continue by slightly pressing down
the tubular handle and simultaneously pulling back the
chain saw. Apply the spike bar a little bit deeper and once
again lift the back handle.
When the timber must be pierced for cutting or
‑
longitudinal cuts are to be performed it is urgently
recommended to have this carried out by specially
trained persons only (high risk of kickback).
‑
When starting a cut, the blade can slip to the side or jump
slightly. This depends on the wood and the condition of
the chain. Therefore, always hold the chain saw with
both hands.
‑
Do longitudinal - lengthwise - cuts at the lowest
possible angle (Fig. 15). Be very careful when doing this
type of cut, as the spike bar cannot grip.
‑
The saw must be running whenever you remove the chain
saw from the wood.
‑
When performing several cuts the throttle lever must be
released in between.
‑
Be careful when cutting splintery wood. Cut pieces of
wood may be pulled along (risk of injuries).
‑
When cutting with the upper edge of the guide bar, the
chain saw may be pushed in the direction of the user if the
chain gets clamped. For this reason use the lower edge
of the bar whenever possible. The chain saw will then be
pushed away from you (Fig. 16).
‑
If the timber is under tension (Fig. 17), first cut the
pressure side (A). Then the crosscut can be performed on
the tension side (B). Thus clamping of the guide bar can
be avoided.
‑
At the end of the cut the weight of the chain saw will
cause it to swing through, since it is no longer held by the
cut. Hold it firmly to control this.
Page 17
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