Shindaiwa 269TCs, Руководство владельца/оператора

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A length of timber lying on the ground will be
subject to tension and compression depending
at which points the major support is.
When timber is supported at its ends the
compression side is at the top and the tension
side is at the bottom.
To cut between these support points make the
¿ rst cut downwards approximately 1 3rd the
timber diameter.
The second cut is made upwards and should
meet the
¿ rst cut.
When the timber is supported at one end only
make the
¿ rst cut upwards approximately
1 3rd the timber diameter. The second cut is
made downwards and should meet the ¿ rst cut.
CAUTION
If you have misjudged the effects of
tension and compression, and cut from
the wrong side, the timber will pinch the
guide bar and chain, trapping it.
Racing the engine with the chain
jammed will burn out your clutch.
If the chain should become jammed
and the saw can not be removed from
the cut do not force it out.
Stop the saw, force a wedge into the
cut to open it up.
Never force the saw when it is jammed.
Do not force the saw into the cut.
A dull chain is unsafe and will cause
excessive wear to the cutting
attachments.
A good way to tell when the chain is
dull is when
¿ ne saw dust comes out
instead of chips.
WARNING
Never use throttle latch for cutting job.
Tension and Compression in Timber
Heavy stress 1 3 Dia.To avoid split
Weakening cut to ¿ nish
Overbuck DOWN
Unsupported end
UP
Underbuck
Wedge
Make angled cut when one section may settle
against the other
Hinge
Hinge
Hinge
Closed
Opened