Husqvarna K6500 Ring Operator's Manual page 19

Pipe cutting
Special care should be taken when cutting in pipes. If the
pipe is not properly supported and the cut kept open
through out the cutting, the blade might be pinched in the
kickback zone and cause a severe kickback. Be
especially alert when cutting a pipe with a belled end or a
pipe in a trench that, if not properly supported, may sag
and pinch the blade.
Before starting the cut the pipe must be secure so it does
not move or roll during cutting.
If the pipe is allowed to sag and close the cut, the blade
will be pinched in the kick back zone and a severe kick
back might develop.
If the pipe is properly supported the end of the pipe will
move downward, the cut will open and no pinching will
occur.
Proper sequence cutting a pipe
1 First cut section I.
2 Move to side II and cut from section I to bottom of the
pipe.
3 Move to side III and cut the remaining part of the pipe
ending at the bottom.
I
III
How to aviod kickback
Avoiding kickback is simple.
The work piece must always be supported so that the cut
stays open when cutting through. When the cut opens
there is no kickback. If the cut closes and pinches the
blade there is always a risk of kickback.
Take care when inserting the blade in an existing cut.
Be alert to movement of the work piece or anything else
that can occur, which could cause the cut to close and
pinch the blade.
OPERATING
II
Cutting depth
K6500 Ring can cut up to a depth of 10,6 inches (270
mm). Making a guide cut of 50-70 mm (2-3 inches) first,
gives you better control of the machine. This means the
water disc can penetrate into the workpiece and help
control the machine. Attempting to saw the entire depth in
one run takes longer. Working with several runs, 3 to 4
when the cut is 10,6 inches (270 mm) in depth, is much
quicker.
1 2 3 4
270 mm
10,6"
Large work
Cuts exceeding 1 m - secure a batten along the line to be
cut. The batten acts as a guide. Use this guide to make a
marking cut along the entire length of the cut, 50-70 mm
(2-3 inches) in depth. Remove the guides once the
marking cut has been made.
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English 19