Repair GrindLazer™ 3A0102C Patents Pending EN - Designed to grind flat, horizontal concrete or asphalt surfaces - For removal of materials from concrete and asphalt surfaces - Professional outdoor use only - Model 571002 - Forward cut GrindLazer 270 (270 cc / 9 hp) Model 571003 - Forward cut GrindLazer 390 (390 cc / 13 hp) Model 571004 - Reverse up-cut (Must be used with LineDriver™) GrindLazer 480 (480 cc / 16 hp) IMPORTANT SAFETY INSTRUCTIONS Read all warnings and instructions in this manual.
Table of Contents Table of Contents Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Component Identification . . . . . . . . . . . . . . . . . . . . 5 Drum Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 6 Cutter Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 7 Belt Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Clutch Replacement . . . . . . . . . . . . . . . . . . . . . . . 11 Pulley Replacement . . . . . . . . . . . . . . . . .
Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbol refers to procedure-specific risk. Refer back to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where applicable.
Warnings WARNING FIRE AND EXPLOSION HAZARD Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent fire and explosion: • Use equipment only in well ventilated area. • Do not fill fuel tank while engine is running or hot; shut off engine and let it cool. Fuel is flammable and can ignite or explode if spilled on hot surface. • Keep work area free of debris, including solvent, rags and gasoline. • Keep a fire extinguisher in work area.
Component Identification Component Identification 270 and 390 Models N D F C E B A D C B G A 480 Models ti14753b K M Component H Description A Engine Throttle Lever Adjusts engine speed. B Engine Stop Switch Supplies power to Engine C Emergency Shut-Off Clamps onto the operator and shuts engine off if cord is disconnected during operation. D Drum Adjustment Dial Raises and lowers cutting drum.
Drum Replacement Drum Replacement 1. Slide replacement drum onto hex shaft. Avoid touching or handling drum after use until it has completely cooled. Removal ti14766a 1. Remove four bolts and Drum Access Panel (H). 2. Lower Drum Adjustment Dial (D) and pull Drum Engage Lever (E) so drum rests on ground. ti14767b 2. Slide drum off of hex shaft. ti14755a ti14756a ti14765a 3. Replace Drum Access Panel (H) and tighten four bolts to 27-30 ft-lb (37-41 N•m).
Cutter Replacement Cutter Replacement Installation (Carbide Flail/Carbide Miller) 1. Replace cutters and washers (see Cutter Stacking Recommendations, pages 17 - 29). Removal (Carbide Flail/Carbide Miller) 1. Remove drum (see Drum Replacement, page 6). 2. Loosen six bolts on each side of drum (do not remove bolts). ti15063a ti15065a NOTE: Cutters must be centered on drum for best performance. 2. Rotate plates on each side of drum to cover rods. 3.
Cutter Replacement Removal (Diamond Blades) Installation (Diamond Blades) 1. Remove drum (see Drum Replacement, page 6). 1. Replace all spacers and diamond blades in the sequence and orientation shown below (blades should be rotated in alternating segments when stacking). 2. Place drum in vise. 3. Use spanner wrench to loosen spanner nut (turn clockwise) and remove. NOTE: This nut has a left-hand thread. ti15055a ti15070a NOTE: Blades must be centered on drum for best performance. 4.
Belt Replacement Belt Replacement 4. Tighten bottom bolt to lower pulley plate. Removal 1. Remove three nuts and washers. Remove belt shroud. ti15069a 5. Remove used belt. ti15064a 2. Loosen jam nut through two sides of belt. ti15076a ti15085a 3. Use two wrenches to loosen motor mount bolts on each side of scarifier base.
Belt Replacement Installation 1. Install new belt. Belt Tension Recommendations: Series A Models (3VX375 Belt) 2. Use two wrenches to tighten motor mount adjustment bolts on each side of scarifier base. ti15083a 3. Tighten belt adjustment bolt according to recommended tension below.
Clutch Replacement Clutch Replacement Installation 1. Install clutch. Removal 1. Remove belt guard and belt (see Belt Replacement, page 9). 2. Use impact wrench to remove clutch bolt. ti15148a 2. Use impact wrench to tighten clutch bolt. ti15147a 3. Remove used clutch. ti15059a ti15077a 3A0102C 3. Install belt and belt guard (see Belt Replacement, page 9).
Pulley Replacement Pulley Replacement Installation 6. Install pulley onto hex shaft. Removal 1. Remove drum (see Drum Replacement, page 6). 2. Remove belt guard and belt (see Belt Replacement, page 9). ti15131a 3. Remove three belt pulley screws and washers. 7. Insert three pulley screws and washers. ti15122a 4. Insert three screws into pulley removal holes. Evenly tighten screws and slowly remove pulley. ti15127a 8. Replace belt guard and belt (see Belt Replacement, page 9). 9.
Brush Replacement Brush Replacement Installation 1. Install new brush. Removal 1. Remove two mounting bolts. ti15078b 2. Tighten two mounting bolts. ti15072b 2. Remove used brush.
Drive Bearing Assembly Replacement Drive Bearing Assembly Replacement 2. Install dust cover onto bearing. Hand-tighten nuts and lock washers to the door. NOTE: Do NOT fully tighten bolts at this time. Door Bearing Assembly Removal 3. Assemble door onto unit and slide door around until the bearing assembly settles into position for proper alignment. 1. Remove four nuts holding bearing assembly onto door and remove door. ti17815a 4. Tighten four nuts on bearing assembly to secure it into place.
Drive Bearing Assembly Replacement Drive Bearing Assembly Removal c. Remove sheave. 1. Remove door from unit and remove any cutting drum on machine. ti14767b ti15126a d. Remove set screw from bushing. ti14765a 2. Remove belt guard and belt (see page 9). 3. Remove sheave. a. Remove three bolts holding sheave onto bushing. ti17819a e. Remove bushing from drive shaft. If bushing is very tight, tap a flat-head screwdriver into slot on bushing to open it up and slide off shaft. ti15122a b.
Drive Bearing Assembly Replacement 4. Remove all four nuts holding drive side bearing onto cage. 3. Make sure drive shaft key is assembled as shown below. ti17820a ti15123b 5. Slide shaft assembly out of holes. Sheave Installation 1. Insert bushing onto drive shaft. Make sure key is in place. ti15125b ti15146a Drive Bearing Assembly Installation 1. Insert new drive bearing assembly into cage. 2. Apply thread sealant to set screw and install set screw into bushing. 3.
Cutter Stacking Recommendations Cutter Stacking Recommendations 6 in. (15 cm) Coarse Cut Flail Cutters (Double Space) 276 Spacers / 60 Cutters INSTRUCTIONS: Rotate sequence 180° and repeat for remaining shafts.
Cutter Stacking Recommendations 8 in. (20 cm) Coarse Cut Flail Cutters (Double Space) 234 Spacers / 84 Cutters INSTRUCTIONS: Rotate sequence 180° and repeat for remaining shafts.
Cutter Stacking Recommendations 10 in. (25 cm) Coarse Cut Flail Cutters (Double Space) 210 Spacers / 102 Cutters INSTRUCTIONS: Rotate sequence 180° and repeat for remaining shafts.
Cutter Stacking Recommendations 6 in. (15 cm) General Cut Flail Cutters (Single Space) 234 Spacers / 84 Cutters INSTRUCTIONS: Rotate drum 180° and repeat for remaining shafts.
Cutter Stacking Recommendations 8 in. (20 cm) General Cut Flail Cutters (Single Space) 186 Spacers / 114 Cutters INSTRUCTIONS: Rotate drum 180° and repeat for remaining shafts.
Cutter Stacking Recommendations 10 in. (25 cm) General Cut Flail Cutters (Single Space) 150 Spacers / 138 Cutters INSTRUCTIONS: Rotate drum 180° and repeat for remaining shafts.
Cutter Stacking Recommendations 6 in. (15 cm) Fine Cut Flail Cutters 198 Spacers / 108 Cutters INSTRUCTIONS: Rotate sequence 180° and repeat for remaining shafts.
Cutter Stacking Recommendations 8 in. (20 cm) Fine Cut Flail Cutters 138 Spacers / 144 Cutters INSTRUCTIONS: Rotate sequence 180° and repeat for remaining shafts.
Cutter Stacking Recommendations 10 in. (25 cm) Fine Cut Flail Cutters 90 Spacers / 174 Cutters INSTRUCTIONS: Rotate sequence 180° and repeat for remaining shafts.
Cutter Stacking Recommendations 6 in. (15 cm) Cut Carbide Millers 204 Spacers / 30 Cutters INSTRUCTIONS: Rotate sequence 180° and repeat for remaining shafts.
Cutter Stacking Recommendations 8 in. (20 cm) Cut Carbide Millers 132 Spacers / 42 Cutters INSTRUCTIONS: Rotate sequence 180° and repeat for remaining shafts.
Cutter Stacking Recommendations 10 in. (25 cm) Cut Carbide Millers 66 Spacers / 54 Cutters INSTRUCTIONS: Rotate sequence 180° and repeat for remaining shafts.
Cutter Stacking Recommendations Diamond Blades Groove Width 1 in. (2.5 cm) Number of Blades Number of Steel 1/8 in. Spacers Number of Aluminum 1/4 in. Spacers 4 5 36 2 in. (5 cm) 8 9 32 3 in. (7.5 cm) 12 13 28 4 in. (10 cm) 16 17 23 5 in. (12.5 cm) 19 21 21 6 in. (15 cm) 23 24 15 7 in. (17.5 cm) 27 28 11 8 in. (20 cm) 31 32 7 9 in. (23 cm) 35 36 3 10 in. (25 cm) 38 39 2 1 (D) For best performance, use 1/4 in.
Troubleshooting Troubleshooting Problem Engine will not start Cause Engine switch is OFF. Solution Turn engine switch ON. Engine is out of gas. Refill gas tank (see engine manual. Engine oil level is low. Try to start engine. Fill oil is necessary (see engine manual). Spark plug cable is disconnected or damaged. Connect spark plug cable or replace spark plug. Engine is cold. Use engine choke. Fuel shutoff lever is in OFF position. Move shutoff lever to ON position.
Technical Data Technical Data GrindLazer 270 (Model 571002) Dimensions Unpackaged 46 (116.8) 28 (71.1) 62 (157.5) 300 (136) Height in./cm: Width in./cm: Length in.cm: Weight lb/kg: Packaged 50.5 (128.3) 37 (94.0) 73 (185.4) 400 (181) Noise (dBa) Sound Power per ISO 3744: 107.3 Sound Pressure measured at 3.1 feet (1m): 91.6 2 Vibration (m/sec ) per ISO 3744 Without LineDriver: 7.9 With LineDriver: 8.3 Power Rating (HorsePower) per SAE J1349 8.
Graco Standard Warranty Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.
