853PRO OPERATOR’S MANUAL | OPERATION |
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CUTTING TIPS
•To start a cut, hold trigger on full throttle and slowly plunge the nose of the guide bar straight into the wall. Use the fixed WallWalker® as a pivot point and pull up on the rear handle to rotate the guide bar into the cut.
•Always operate the 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 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 1/2 inch (12 mm) to 1 inch (25 mm) 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 WallWalker®.
•Use the WallWalker® to help cut more efficiently and reduce operator fatigue. The WallWalker® is a fulcrum that converts inward force to downward force and will develop a
•Apply upward force on the trigger handle to keep the WallWalker® engaged properly, otherwise the WallWalker® pick will skid, which will reduce the effectiveness. As the saw begins to rotate up, feed force is developed down the line of the intended cut. Once the saw is fully rotated upwards, pull the saw out of the cut a few inches and
•When cutting rebar, slowly rock the 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 rebar.
•Expect more diamond chain stretch and guide bar wear 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 saw begins to cut consistently crooked, turn the guide bar over and use the other side. Dress worn rails with belt sander.
Note: The normal life of a guide bar is two to three diamond chains. Rebar can shorten guide bar life.
•When using a new diamond chain, you can increase the cutting speed by opening up the diamonds by making a few cuts in an abrasive material such as a cinder block.
© 2008 ICS, Blount International Inc. Specifications are subject to change without notice. REV0708 F/N 71904 | 11 |
