Graco GrindLazer 25M992, GrindLazer 25M993, GrindLazer 25M994, GrindLazer 25N658, GrindLazer 25N659 Operation Manual
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Operation
25M992 / 25M993
25M994
(Drums, cutters, and LineDriver
™
sold separately)
25N659
25N658
™
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)
Model 25N658 - Forward Cut
GrindLazer HP DC1013 G DCS (390 cc / 13 hp Electric Start)
Model 25N659 - Reverse Up-Cut (Must be used with LineDriver™)
GrindLazer HP DC1021 G DCS (627 cc / 21 hp Electric Start)
LineDriver ES Operation, Repair, Parts - 3A6623
LineDriver Operation - 312540
3A5918B
Related Manuals:
Repair - 3A5919
EN
Parts - 3A5929
IMPORTANT SAFETY INSTRUCTIONS
Read all warnings and instructions in this manual and in related manuals before using the equipment.
Be familiar with the controls and the proper usage of the equipment. Save all instructions.
Contents
Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Battery Disposal . . . . . . . . . . . . . . . . . . . . . . . . . 4
Component Identification . . . . . . . . . . . . . . . . . . . . 5
Component Identification (DCS Models) . . . . . . . . 6
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Handle Bar Adjustment . . . . . . . . . . . . . . . . . . . . 7
Drum Installation/Replacement . . . . . . . . . . . . . . 7
Depth Control Wheels . . . . . . . . . . . . . . . . . . . . . 8
How to Level the Drum . . . . . . . . . . . . . . . . . . . . 8
Dust Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
DCS Control (DCS Models only) . . . . . . . . . . . . 10
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Starting the Engine . . . . . . . . . . . . . . . . . . . . . . 14
Cutting Material . . . . . . . . . . . . . . . . . . . . . . . . . 16
Cutting Drum Assemblies . . . . . . . . . . . . . . . . . 17
Stop Cutting Material . . . . . . . . . . . . . . . . . . . . . 18
Clean Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
DCS Instructions . . . . . . . . . . . . . . . . . . . . . . . . 19
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Caster Wheel Maintenance . . . . . . . . . . . . . . . . 21
DCS Control Translations . . . . . . . . . . . . . . . . . . . 22
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 26
2 3A5918B
Warnings
WARNING
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 symbols refer to procedure-specific risks. When these
symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard
symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.
DUST AND DEBRIS HAZARD
Grinding concrete and other surfaces with this equipment can create dust that contains hazardous
substances. Grinding can also create flying debris.
To reduce the risk of serious injury:
• Control the dust to meet all applicable workplace regulations.
• Wear protective eye wear and a properly fit-tested and government approved respirator suitable for
the dust conditions.
• Use equipment only in a well-ventilated area.
• Grinding equipment must be used only by trained personnel who understand the applicable workplace regulations.
ENTANGLEMENT AND ROTATING PARTS HAZARD
Rotating parts can cut or amputate fingers and other body parts.
• Keep clear of rotating parts.
• Do not operate equipment with protective guards or covers removed.
• Do not wear loose clothing, jewelry or 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 not touch hot
equipment. Wait until equipment has cooled completely.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not leave the work area while equipment is energized. Turn off all equipment when equipment
is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manufacturer’s replacement parts only.
• Do not alter or modify equipment.
• Use equipment only for its intended purpose. Call your distributor for information.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
• Maintain a safe operating distance from other people in the work area.
• Avoid any pipes, columns, openings, or any other objects protruding from work surface.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the operating
area of the equipment to help protect you from serious injury, including eye injury, inhalation of dust or
chemicals, burns, and hearing loss. This equipment includes but is not limited to:
• Protective eye wear.
• Protective shoes.
• Gloves.
• Hearing protection.
• Properly fit-tested and government approved respirator suitable for the dust conditions.
3A5918B 3
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.
CARBON MONOXIDE HAZARD
Exhaust contains poisonous carbon monoxide, which is colorless and odorless. Breathing carbon
monoxide can cause death.
• Do not operate in an enclosed area.
BATTERY HAZARD
The battery may leak, explode, cause burns, or cause an explosion if mishandled. Contents of an open
battery can cause severe irritation and/or chemical burns. If on skin, wash with soap and water. If in
eyes, flush with water for at least 15 minutes and get immediate medical attention.
• Only use the battery type specified for use with the equipment. See Technical Data.
• Replace battery only in well-ventilated area and away from flammable or combustible materials,
including paints and solvents.
• Do not dispose of battery in fire or heat above 50°C (122°F). The battery is capable of exploding.
• Do not throw into fire.
• Do not expose battery to water or rain.
• Do not disassemble, crush, or penetrate the battery.
• Do not use or charge a battery that is cracked or damaged.
• Follow local ordinances and/or regulations for disposal.
CALIFORNIA PROPOSITION 65
The engine exhaust from this product contains a chemical known to the State of California to cause
cancer, birth defects or other reproductive harm.
This product contains a chemical known to the State of California to cause cancer, birth defects or
other reproductive harm. Wash hands after handling.
Battery Disposal
Do not place batteries in the trash. Recycle batteries according to local regulations. In the USA and Canada call
1-800-822-8837 to find recycling location or go to www.call2recycle.org.
4 3A5918B
Component Identification
25M994
25M992 / 25M993
Component Identification
Component Description
A Engine Throttle Lever Adjusts engine speed.
B Power Switch Supplies power to Engine
C Engine Kill Button Clamps onto the operator and shuts engine off if cord is disconnected during oper-
ation.
D Drum Adjustment Dial Sets depth of drum cut.
E Drum Engage Lever Handle bars can be pushed down to raise the cutting drum off of surface and
locked into UP position. Once drum is locked in UP position, GrindLazer can be
moved around without drum touching surface. To lower the drum to the surface,
push down on handlebars, engage the Drum Engage Lever and then slowly pull
the handlebars up.
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 and is allowed to turn freely.
G Rear Wheel Parking Brake Prevents rear wheel from moving.
H Drum Access Panel Removable plate that allows access to replace cutting drum.
K Depth Control Wheels Levels cutting drum.
M Vacuum Port Port to attach vacuum to reduce dust and debris during operation.
N Lift Points Reinforced points used for lifting GrindLazer during transportaton or repair.
P Ignition Switch Electric Start Engine (DC1021 G Model Only)
R Tachometer/Hour Meter Displays the RPMs of the engine while running and displays total hours of engine
run time.
3A5918B 5
Component Identification (DCS Models)
25N659
25N658
Component Identification (DCS Models)
Component Description
A Engine Throttle Lever Adjusts engine speed.
B Power Switch Supplies power to DCS Control and Engine.
C Engine Kill Button Clamps onto the operator and shuts engine off if cord is disconnected during operation.
D DCS Control Controls and displays depth of drum cut.
E Drum Engage Lever Handle bars can be pushed down to raise the cutting drum off of surface and locked into UP
position. Once drum is locked in UP position, GrindLazer can be moved around without drum
touching surface. To lower the drum to the surface, push down on handlebars, engage the
F Front Wheel Lock Lever Front wheel is usually locked to guide GrindLazer in a straight line. When lever is engaged,
G Rear Wheel Parking Brake Prevents rear wheel from moving.
H Drum Access Panel Removable plate that allows access to replace cutting drum.
K Depth Control Wheels Levels cutting drum.
M Vacuum Port Port to attach vacuum to reduce dust and debris during operation.
N Lift Points Reinforced points used for lifting GrindLazer during transportaton or repair.
P Ignition Switch Electric Start Engine.
R Tachometer/Hour Meter Displays the RPMs of the engine while running and displays total hours of engine run time.
S Home Button Raises drum off the surface to highest position.
T Zero Button Brings the drum to the surface (reprogrammable).
U Cut Depth Button Lowers drum to the desired cut depth target (reprogrammable).
V Up/Down Buttons Raises or Lowers the drum.
W Manual Height Adjustment Remove screw plug to adjust drum height using 6mm hex key.
Drum Engage Lever and then slowly pull the handlebars up.
front wheel becomes unlocked and is allowed to turn freely.
6 3A5918B
Setup
S
S
Carbide Miller
Diamond Blade
PCD
ti15138a
ti15137a
Forward Cut
(25M992, 25M993 & 25N658)
Reverse Up-Cut
(25M994 & 25N659)
ti14766a
ti14764a
ti14756a
ti14755a
Models 25M992, 25M993 and 25N658 are designed to
be operated by a single operator positioned at the back
of the unit, or in conjunction with LineDriver. Models
25M994 and 25N659 can ONLY be operated with a
LineDriver.
Setup
To avoid unexpected startup, disconnect spark plug
wire before you service your unit.
Handle Bar Adjustment
To adjust handle bar: remove four screws (S), slide
handle bar to desired height, and replace screws and
tighten.
Drum Installation/Replacement
Installation
NOTE: Carbide flail cutter drums do not require specific
orientation or direction. Carbide millers and diamond
blades are directional. They should be stacked so that
the arrows on the millers, PCDs, and blades face the
same direction as the rotation of the drum.
1. Slide replacement Drum onto hex shaft.
2. Replace Drum Access Panel (H).
3. Non-DCS Models
: Lower Drum Adjustment Dial (D)
and pull Drum Engage Lever (E) so drum rests on
ground and the door pin lines up with the hole.
Models 25M992, 25M993 and 25N658 are designed for
“forward cut” grinding (the drum rotates in the same
direction that it travels). Models 25M994 and 25N659
are designed for “reverse (up-cut)” grinding (the drum
rotates in the opposite direction that it travels).
3A5918B 7
DCS Models
: Pull the Drum Engage Lever (E) to
lower the drum. Turn the Power Switch ON (B). Use
the Up/Down Buttons (V) to raise/lower the drum
housing until the drum rests on the ground and the
door pin lines up with the hole.
Setup
ti15257a
ti14767a
ti14765a
S
S
K
K
ti15095a
5 in.
S
S
K
K
ti15094a
10 in.
4. Once the proper drum height is achieved, slide the
Drum Access Panel onto the hex shaft and door pin.
5. Tighten four bolts on Drum Access Panel (H).
Depth Control Wheels
Using Depth Control Wheels as a 5 in. or 10
in. Wide Cutting Guide
To make a 5 in. cut, install two spacers (S) on outside
of Depth Control Wheels (K).
To make a 10 in. cut, install two spacers (S) on inside
of Depth Control Wheels (K).
6. Non-DCS Models
to maximum height.
DCS Models
DCS Control (D).
:Turn Drum Adjustment Dial (D)
: Press the Home Button (S) on the
Removal
To avoid unexpected start up, disconnect spark plug
wire before you service your unit.
1. Remove four bolts and Drum Access Panel (H).
2. Slide drum off of hex shaft.
How to Level the Drum
To properly level the drum, GrindLazer must be resting
on a flat level surface.
Depth Control Wheels Adjustment
1. Make sure drum is properly installed (see Drum
Replacement, page 7).
2. Push down on handle bars, pull engagement lever,
and lower drum into DOWN position.
8 3A5918B
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