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613GC OPERATOR’S MANUAL
14
OPERATION
CUTTING WITH THE 613GC CUT-OFF SAW
To start a cut, hold trigger on full throttle and slowly plunge the nose of the guide bar straight into the wall.
Lengthen the cut and engage the point of the fixed Wallwalker
®
. Use the fixed Wallwalker
®
as a pivot
point and pull up on the rear handle to rotate the guide bar into the cut.
CUTTING TIPS
• Always operate the chain-based cut off saw at full throttle. Apply enough feed force so that the free
running RPM drops 20 to 30%. If too much force is applied, the cut-off saw will lug or stall. The
diamond chain will not have enough speed to cut effectively. If too little feed force is applied, the
diamonds will skid and glaze over.
• For straighter cuts use the “step cut” method. First score the entire cut line with the nose of the guide
bar approximately ½ inch (12mm) to 1 inch (25mm) deep. Next, deepen the cut by about 2 inches
(50 mm). This groove will help guide the guide bar for a straight cut. Then plunge all the way through
and complete the cut using the fixed Wallwalker
®
.
• Plunge cut instead of starting at the top of the wall. This will reduce chatter, extend diamond life,
create a straighter cut and more quickly enable the use of the fixed Wallwalker
®
.
• Use the fixed Wallwalker
®
to cut efficiently and reduce user fatigue. The fixed Wallwalker
®
is a
fulcrum that can be used to apply additional force when cutting. To use correctly, plunge into the wall
and simply engage the point of the fixed Wallwalker
®
into the cut and pry upward with the rear handle.
• As the cut-off saw begins to rotate up, feed force is developed down the line of the intended cut.
Once the cut-off saw is fully rotated upwards, pull the cut-off saw out of the cut a few inches and re-
engage the pick into the cut and repeat.
• When cutting heavy rebar, slowly ”rock” the cut-off saw so that you’re always cutting concrete as well
as steel. This will help keep the diamonds exposed. Also, expect less diamond chain life when
cutting heavy rebar.
• Expect more diamond chain stretch when making nose buried cuts for extended periods of time, as
the diamond chain does not have a chance to “throw” the slurry away from the nose of the guide bar.
• If the cut-off saw begins to cut consistently crooked, turn the guide bar over and use the other side.
Dress worn rails with belt grinder. Note: The normal life of a guide bar is 2 to 3 diamond chains.
Heavy rebar can shorten guide bar life.
• When using a new diamond chain, you can increase the cutting speed by “opening up the diamonds”.
Make a few cuts in an abrasive material such as a cinder block.
Wallwalker
®
point