ICS 680GC Operator's Manual

© 2009 ICS, Blount Inc. TITLE 680GC OPERATOR’S MANUAL 3 TABLE OF CONTENTS SYMBOLS & LABELS 4 SAFETY 5 TECHNICAL SPECIFICATIONS 8 SET-UP 9 OPERATION 12 MAINTENANCE 17 TROUBLESHOOTING 24 REFERENCE 25 ...

F/N 525746 Jan 09 TITLE 680GC OPERATOR’S MANUAL 4 SYMBOLS & LABELS THE FOLLOWING SYMBOLS & DEFINITIONS ARE FOUND THROUGHOUT THIS MANUAL AND ARE DESIGNED TO MAKE YOU AWARE OF POTENTIAL HAZARDS OR UNSAFE PRACTICES. A potentially hazardous situation exists which, if not avoided, could result in death or serious injury. A potentially hazardous situation exists which, if not avoided, may result in minor or moderate injury or property ...

© 2009 ICS, Blount Inc. TITLE 680GC OPERATOR’S MANUAL 5 SAFETY WARNING THE FOLLOWING SYMBOL APPLIES TO ALL THE ITEMS LISTED ON THIS PAGE A potentially hazardous situation exists which, if not avoided, could result in death or serious injury. Diamond chain breakage can result in high-speed ejection of parts, which can result in death or serious personal injury to operators or bystanders. The items listed below are critical to minimiz ...

F/N 525746 Jan 09 TITLE 680GC OPERATOR’S MANUAL 6 SAFETY CAUTION THE FOLLOWING SYMBOL APPLIES TO ALL ITEMS LISTED ON THIS PAGE A potentially hazardous situation exists which, if not avoided, may result in minor or moderate injury or property damage. • Always turn a chain-based cut-off saw OFF when performing maintenance on the saw including diamond chain tensioning. • Never use equipment that is not functioning properly. H ...

© 2009 ICS, Blount Inc. TITLE 680GC OPERATOR’S MANUAL 7 SAFETY IMPORTANT THE FOLLOWING SYMBOL APPLIES TO ALL ITEMS LISTED ON THIS PAGE A potential situation exists which, if not avoided, may result in product or property damage. Note: The chain-based cut-off saw is equipped with a two-stroke engine and must always be run using a mixture of gasoline and ICS® two-stroke engine oil. It is important to accurately measure the amount of oi ...

F/N 525746 Jan 09 TITLE 680GC OPERATOR’S MANUAL 8 TECHNICAL SPECIFICATIONS Engine Type 2-stroke Single Cylinder Air Cooled Displacement 4.9 cu-in (80cc) Horsepower 5.7 HP (4.2 kw) @ 9,000 RPM Torque 37.2 in-lbs (4.2 Nm) Engine Speed 11,500 +/- 500 rpm 2,800-3,200 rpm idle Diamond Chain Speed In cut = 4,000 sfm No load = 5,300 sfm Weight 21 lbs (9.5 kg) with guide bar and diamond chain Cut Depth Up to 12 inches (30.5cm) 10 inches ...

© 2009 ICS, Blount Inc. TITLE 680GC OPERATOR’S MANUAL 9 SET-UP STEP 1 Loosen side cover nuts and remove side cover. GUIDE BAR AND DIAMOND CHAIN INSTALLATION STEP 4 Mount the diamond chain on the guide bar starting at the drive sprocket and continue over the guide bar nose. STEP 2 Remove shipping spacer. Install the diamond chain correctly. If using a single bumper chain, the bumper must always lead the segment into the cut as shown her ...

F/N 525746 Jan 09 TITLE 680GC OPERATOR’S MANUAL 10 SET-UP GUIDE BAR AND DIAMOND CHAIN INSTALLATION STEP 8 All chains have a tendency to stretch when used. Diamond chains stretch more than wood cutting chains because of the abrasive materials they are cutting. When a chain stretches to a point where the drive links are hanging approximately 1/2” (12 mm) to 3/4” (18 mm)** below the bar, it’s time to tension the chain. See Not ...

© 2009 ICS, Blount Inc. TITLE 680GC OPERATOR’S MANUAL 11 SET-UP Note 1: Be aware that the guide bar rails may develop sharp edges over time so always pull the diamond chain by the diamond segments. Note 2: Do not “over tension” the diamond chain. Loss of power will result. It is normal for the drivelinks to hang underneath the guide bar. The diamond chain should be tight but be able to be pulled around the guide bar by hand. Note 3 ...

F/N 525746 Jan 09 TITLE 680GC OPERATOR’S MANUAL 12 OPERATION CAUTION FUEL HANDLING FUEL MIXTURE: 25:1 gasoline/oil mixture. GASOLINE OIL US Gallon US Fl oz 1 5.2 2 1/2 12.8 5 25.6 GASOLINE OIL Liters ml 1 40 5 200 10 400 20 800 • Use premium unleaded gasoline with a minimum octane rating of 90. If lower octane gasoline is used, engine temperature will increase which can result in a piston seizure and damage to the engine. � ...

© 2009 ICS, Blount Inc. TITLE 680GC OPERATOR’S MANUAL 13 COLD ENGINE STARTING PROCEDURE 1. Toggle the ignition switch to the "ON" position and pull the choke lever out. 2. Lock the throttle in the start position by depressing the trigger (A) and trigger interlock (B) at the same time. 3. Depress and hold throttle lock button (C) while releasing the trigger and trigger interlock in succession. 4. Press decompression valve (D). 5. Open t ...

F/N 525746 Jan 09 TITLE 680GC OPERATOR’S MANUAL 14 OPERATION PRE-CUT CHECKLIST • Proper Diamond Chain Installation: The bumper should lead the segment into the cut. • Proper Diamond Chain Tension: The diamond chain should be tight but easily pulled around the guide bar by hand. • Ensure all safety devices are properly mounted and functional and that all controls are in proper working order. • Be sure there are no obstruct ...

© 2009 ICS, Blount Inc. TITLE 680GC OPERATOR’S MANUAL 15 OPERATION CUTTING WITH THE 680GC 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-bas ...

F/N 525746 Jan 09 TITLE 680GC OPERATOR’S MANUAL 16 OPERATION SYSTEM CLEAN-UP • After cutting, run the saw for at least 15 seconds with the water on to flush slurry and debris from diamond chain, guide bar and drive sprocket. • Wash concrete slurry from cut-off saw assembly. • Avoid getting any water in the carburetor or exhaust system. If water enters exhaust port, point the guide bar tip down and pull the starter handle s ...

© 2009 ICS, Blount Inc. TITLE 680GC OPERATOR’S MANUAL 17 MAINTENANCE Follow these simple maintenance guidelines and the 680GC Cut-Off Saw will keep running at its very best. AFTER EACH USE 1. Rinse the saw, guide bar and diamond chain with water. 2. Follow instructions on the Daily Maintenance Label, located on the air filter cover. 3. Inspect and tighten all fasteners as necessary. 4. Inspect drive sprocket for tooth wear and replace ...

F/N 525746 Jan 09 TITLE 680GC OPERATOR’S MANUAL 18 MAINTENANCE AIR FILTER IMPORTANT STARTER HOUSING ASSEMBLY It is common for concrete slurry to get inside the starter housing assembly during cutting. This can cause the starter pawls to stick and not engage when the rope is pulled. IMPORTANT • After each usage, thoroughly flush the starter housing assembly with water. (Figure 3) • Lubricate the starter pawls by spraying light ...

© 2009 ICS, Blount Inc. TITLE 680GC OPERATOR’S MANUAL 19 MAINTENANCE TENSIONING THE RECOIL SPRING • Lift the starter cord up into the notch on the starter pulley (Figure 3) and wind the pulley clockwise 5 full turns. Remove the cord from the pulley notch while pinching the pulley. Release the pulley slowly allowing it to wind the rope counterclockwise onto the pulley. • When completed, the starter handle should be pulled back in th ...

F/N 525746 Jan 09 TITLE 680GC OPERATOR’S MANUAL 20 MAINTENANCE DRIVE SPROCKET The drive sprocket (rim sprocket) is a wear item and should be replaced every 2-3 diamond chains. IMPORTANT The needle bearing inside the splined adapter should be greased regularly and should be replaced with each new clutch cup. IMPORTANT A rim sprocket system (Figure 2) consists of a clutch cup w/ splined adapter and a rim sprocket. When the rim spro ...