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7
Flange nut
position for
1/8" thick or less wheels
1/8"
1/4"
Flange nut
position for
1/4" thick or more wheels
7. Press in the spindle lock button while turning the
ange nut clockwise. Tighten securely.
8. To remove wheel, remove the battery pack and
reverse the procedure.
Sanding Disc Selection
Use sanding discs and accessories that are:
• correct size as written on tool’s nameplate.
• rated at or above the RPM listed on the tool’s name-
plate.
• correct accessory, wheel type and grit for the job.
Select the correct type of sanding disc for your job.
Generally, use 24 or 36 grit for heavy stock removal;
50, 60, or 80 grit for medium stock removal and 120
grit for nishing. Always begin with a coarse grit, us-
ing successively ner grits to obtain the desired nish.
•Aluminum Oxide: For fast cutting, general purpose
discs for most metal jobs. Best for cold-rolled steel,
stainless steel or metals requiring tough, fast cutting,
long lasting abrasives.
•Aluminum Zirconia Bi-Cut: Unique grit pattern is
arranged in clusters for faster stock removal and
cleaning. Ideal for removing paint from cars, boats,
etc. without clogging.
•Ceramic: Lasts up to 3 times longer than Aluminum
Oxide Discs. For general metal working. Ideal for
tough jobs.
Installing Backing Pad and Sanding Discs
1. Remove the battery pack. WARNING! Always
remove battery pack before changing or removing
accessories.
2. Wipe the accessories, disc nut and spindle to
remove dust and debris. Inspect the parts for dam-
age. Replace if needed. Use only MILWAUKEE
mounting hardware designed for your tool.
3. Slip backing pad onto spindle with at side away
from gear case.
4. Place sanding disc on backing pad and secure
assembly to spindle with disc nut.
Spindle
Backing pad
Disc nut
Sanding disc
5. Press in the spindle lock button while turning ange
nut clockwise. Tighten securely.
6. To remove backing pad and sanding disc, remove
the battery pack and reverse the procedure.
Installing/Removing/Cleaning
the Dust Screen
Using the dust screen will increase the performance
and extend the life of the tool.
1. To attach the dust screen, snap the screen over
the tool’s handle.
2. To remove the dust screen, insert a at screw-
driver into the notch at the top of the dust screen
and pry away from the tool.
3. To clean the dust screen, tap against a hard sur-
face, or blow clean with compressed air.
ONE-KEY™
To learn more about the ONE-KEY™ functionality
for this tool, go to milwaukeetool.com/One-Key. To
download the ONE-KEY™ app, visit the App Store or
Google Play from your smart device.
ONE-KEY™ Indicator
Solid Blue Wireless mode is active and ready
to be congured via the ONE-KEY™
app.
Blinking Blue Tool is actively communicating with
the ONE-KEY™ app.
Blinking Red
Tool is in security lockout and can
be unlocked by the owner via the
ONE-KEY™ app.
OPERATION
WARNING
To reduce the risk of injury, always
wear proper eye protection marked
to comply with ANSI Z87.1.
When working in dusty situations, wear appro-
priate respiratory protection or use an OSHA
compliant dust extraction solution.
Never grind without proper safety equipment.
Speed dial
(Cat. No. 2888-20, 2889-20)
MILWAUKEE Variable Speed Grinders have a
speed dial located on the end of the handle to set
the maximum speed. Rotate the speed dial to “5”
for maximum speed, “1” for minimum speed.
Controlled Start
The controlled start feature reduces the torque reac-
tion "jerk" when the trigger is pulled.
Electric Brake
The electric brake engages when the switch is re-
leased, causing the wheel to stop within seconds.
There may be a delay between the time the switch is
released and when the brake engages. Occasionally
the brake may miss completely. If the brake misses
frequently, have the tool serviced by an authorized
MILWAUKEE service facility. Make sure the tool
comes to a complete stop before laying it down.
WARNING
Always hold the tool rmly with
both hands using the handles
provided before and during grinding.
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