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3A5919A

Repair

GrindLazer

For removal of materials from flat horizontal concrete and asphalt surfaces. For 
professional use only.

Model 25M992 - Forward cut

GrindLazer HP DC89 G (270 cc / 9 hp)

Model 25M993 - Forward cut

GrindLazer HP DC1013 G (390 cc / 13 hp)

+

Model 25M994 - Reverse up-cut (Must be used with LineDriver

)

GrindLazer HP DC1021 G (627 cc / 21 hp Electric Start)

IMPORTANT SAFETY INSTRUCTIONS

Read all warnings and instructions in this manual and in the 
Operation and Parts Manuals before using the equipment. Be 
familiar with the controls and the proper usage of the 
equipment. Save all instructions.

GrindLazer HP DC89 G and 

GrindLazer HP DC1021 G 

(Drums, cutters, and LineDriver

 sold separately)

GrindLazer HP DC1013 G

EN

Related Manuals:

Operation - 3A5918
Parts - 3A5929

Summary of Contents for GrindLazer 25M992

Page 1: ...se up cut Must be used with LineDriver GrindLazer HP DC1021 G 627 cc 21 hp Electric Start IMPORTANT SAFETY INSTRUCTIONS Read all warnings and instructions in this manual and in the Operation and Parts...

Page 2: ...ch Replacement 11 Pulley Replacement 12 Brush Replacement 13 Drive Bearing Assembly Replacement 14 Door Bearing Assembly Removal 14 Door Bearing Assembly Installation 14 Drive Bearing Assembly Removal...

Page 3: ...r long hair while operating equipment Before checking moving or servicing equipment disable power supply BURN HAZARD Cutters and engine can become very hot during operation To avoid severe burns do no...

Page 4: ...Do not operate in an enclosed area BATTERY HAZARD Lead acid batteries produce explosive gases and contain sulfuric acid that can cause severe burns To avoid sparks and injury when handling or working...

Page 5: ...zer can be moved around without drum touching surface F Front Wheel Lock Lever Front wheel is usually locked to guide GrindLazer in a straight line When lever is engaged front wheel becomes unlocked a...

Page 6: ...it travels DC1021 Model is designed for reverse up cut grinding the drum rotates in the opposite direction that it travels 1 Slide replacement drum onto hex shaft 2 Lower Drum Adjustment Dial D and pu...

Page 7: ...ide of drum Remove end plates 3 Push rod out and remove cutters Installation Carbide Flail Carbide Miller 1 Replace cutters and washers visit www graco com drumassembly for cutter stacking recommendat...

Page 8: ...1 Replace all spacers and diamond blades in the sequence and orientation shown below blades should be rotated in alternating segments when stacking NOTE Blades must be centered on drum for best perfor...

Page 9: ...wo sides of belt 3 Use two wrenches to loosen motor mount bolts on each side of scarifier base 4 Tighten bottom bolt to lower pulley plate 5 Remove used belt To avoid injury from unexpected start up d...

Page 10: ...cording to recommended tension below Belt Tension Recommendations 4 Tighten jam nut through two sides of belt 5 Replace belt shroud and tighten three nuts and four screws ti15061a ti15087a ti15083a 3V...

Page 11: ...move clutch bolt 3 Remove used clutch Installation 1 Install clutch 2 Use impact wrench to tighten clutch bolt 3 Install belt and belt guard see Belt Replacement page 9 To avoid injury from unexpected...

Page 12: ...val holes Evenly tighten screws and slowly remove pulley 5 Remove pulley Installation 6 Install pulley onto hex shaft 7 Insert three pulley screws and washers 8 Replace belt guard and belt see Belt Re...

Page 13: ...mounting bolts 2 Remove used brush Installation 1 Install new brush 2 Tighten two mounting bolts To avoid injury from unexpected start up disconnect spark plug wire and black battery cable DC1021 G on...

Page 14: ...ge 2 Install dust cover onto bearing Hand tighten nuts and lock washers to the door NOTE Do NOT fully tighten bolts at this time 3 Assemble door onto unit and slide door around until the bearing assem...

Page 15: ...bolts into adjacent holes and evenly tighten to remove sheave from bushing c Remove sheave d Remove set screw from bushing e Remove bushing from drive shaft If bushing is very tight tap a flat head s...

Page 16: ...elow Sheave Installation 1 Insert bushing onto drive shaft Make sure key is in place 2 Apply thread sealant to set screw and install set screw into bushing 3 Apply thread sealant to bolt and place loc...

Page 17: ...m 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 For best performance use 1 4 in spacers on each end of shaft to center diamond blades on...

Page 18: ...raulic oil Parking brake is set Fill with Mobil 15W 050 synthetic oil Release parking brake Wheel release is open Close hand tighten Engine shuts off when operator exits LineDriver Safety switch Set p...

Page 19: ...P DC1013 G Model 25M993 Dimensions Unpackaged Packaged Height in cm 46 116 8 50 5 128 3 Width in cm 28 71 1 37 94 0 Length in cm 62 157 5 73 185 4 Weight lb kg 310 141 410 186 Noise dBa Sound Power pe...

Page 20: ...t disclose any defect in material or workmanship repairs will be made at a reasonable charge which charges may include the costs of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN...

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