Multitool MT8CW User manual

1
SAFETY INSTRUCTIONS
1. ALWAYS WEAR EYE PROTECTION. A full-face visor is preferred. Any Belt/Disc Grinder can throw
foreign objects into the eyes.
2. AVOID CONTACT WITH BELT OR DISC. The abrasive belt when running is an aggressive cung tool.
Extra care should be exercised when using coarse grit belts because of their rapid cung acon.
3. KEEP CHILDREN AWAY. All visitors should be kept a safe distance from the work area.
4. BOLT THE BENCH GRINDER securely to the bench or supporng surface to stop it from pping over
or moving when in use.
5. DO NOT MOUNT the aachment protruding into walkways.
6. KEEP WORK AREA CLEAN. Cluered areas and benches invite accidents.
7. ALWAYS WEAR A DUST MASK to prevent dust inhalaon when adequate venlaon or extracon is
not available.
8. DO NOT WEAR LOOSE CLOTHING which may become entangled in the machine. Wear protecve
hair covering to contain long hair.
9. ALWAYS HOLD the work piece rmly when grinding and apply a light and steady pressure against
abrasive disc or belt.
10. ALWAYS GRIND ON THE DOWNWARD SIDE of the grinding disc. Grinding on the upward side of
the disc could cause the work piece to y out of posion, resulng in injury.
11. DO NOT USE BELTS THAT ARE DAMAGED, TORN, OR SHOW SIGNS OF WEAR.
12. ALWAYS INSTALL BELTS with arrows in the back of the belts poinng the correct direcon. Belts
with lap joints must be ed facing the correct direcon.
WARNING:
To avoid mistakes that could cause injury, do not use the Multool unl you have
read and understood the following:
The words “us”, “we” or “our” refers to Multool Grinders or
their authorized agent.
A.) The warranty will only apply if the ng and operang
instrucons are followed.
B.) The warranty will only apply for a period of 1 year from the
date of original purchase against any defect in our product,
which can be proved, to our sasfacon to have been caused
by faulty materials or workmanship. Our liability is limited
to the cost of repairing or at our opon, replacement of the
defecve goods or parts of the goods. We will not be liable for
any defect caused by unauthorized repair.
1. If warranty claim is made, we must be noed as soon as
possible aer assumed defect has become apparent.
2. Goods may only be returned with the approval and RGA # from
Multool Grinders. Contact Multool Grinders at 641-628-4253
or email us at sales@multoolgrinders.com to obtain RGA# and
return approval.
3. The customer must prepay all freight charges for returned goods.
4. We will contact the customer with a suggeson aer inspecng
the goods to determine with the customer what acon should be
taken in the circumstances.
INSTRUCTIONS TO FOLLOW FOR WARRANTY CLAIMS:
WARRANTY AND CONDITIONS OF SALE
For parts, tech support, belts, or discs contact Multool Grinders at 641-628-4253 or sales@multoolgrinders.com
Installaon Instrucons for Belt Grinder Aachment
Model MT8CW
USER IS RESPONSIBLE TO HAVE WORKING KNOWLEDGE OF BELT GRINDER
USAGE. MULTITOOL GRINDERS IS NOT RESPONSIBLE FOR ANY DAMAGES OR
INJURIES INCURRED WHILE USING THE MULTITOOL PRODUCT LINE.
!

2
OPERATING INSTRUCTIONS
BELT CHANGING
To remove the belt, simply push down on the underside of belt to compress the tensioner assembly. The
catch will automacally hold the slide in the retracted posion. When replacing the belt simply release the
catch. Make sure that direconal belts are turning the correct direcon.
BELT TRACKING
Ensure the belt enrely covers the rubber contact wheel. Adjustments can be made when running or when
belt is rotated by hand. To adjust le, move tracking lever down. To adjust right, move lever up.
PLATEN GRINDING (HORIZONTAL OR VERTICAL)
It is important that the platen is not set too high. If belt is deected and rides up over the platen, this creates
an undue strain on the grinder, especially when starng. If platen is not oen used, it is beer to adjust it
slightly below the belt. A simple method to adjust the platen is to place a straight edge on top of the belt
between the contact wheel and drive pulley and raise platen so that it just touches the under side of belt.
DISC GRINDING
Disc grinding is well suited for shaping and general deburring work. Grind parts on the downward side of the
disc’s rotaon, so that dust and sparks are directed away from the operator’s face. For grinding small parts,
a secure work holding tool should be used to help prevent operator from contact with grinding disc surface.
Abrasive disc grit should be matched to the amount of material intended to be removed. The more quickly
material can be removed, the less heat will build up in the part being ground. This will also help preserve
abrasive life. 80 – 180 grit discs are good for general deburring and chamfering operaons. For heavy
material removal use more aggressive 40 grit abrasive discs.
CONTACT WHEEL GRINDING, POLISHING, AND SANDING
Always grind on the lower half of the contact wheel, so that dust and sparks are directed away from the
operator’s face. For grinding small parts, a secure work holding tool should be used to help prevent operator
contact with the grinding belt surface. Abrasive belt grit should be matched to the amount of material
intended to be removed. The more quickly material can be removed, the less heat will build up in the part
being ground. This will also help preserve abrasive life. 80 – 180 grit belts are good for general deburring
and chamfering operaons. For heavy material removal use aggressive (24 – 40 grit) abrasive belts unl
desired shape is achieved. Finer grit belts should be ulized for removal of coarser grinding marks and
polishing operaons. Scotchbrite® belts are ideally suited for paint and rust removal operaons.
SLACK BELT
Slack Belt grinding is a method of belt grinding, sanding, or polishing where no backing is used behind the
belt. It is especially suitable for round and contoured work and some sharpening operaons. Slack belt
grinding can be performed on the underneath side of the belt opposite the platen. Belt grits of 180 to 400
are recommended due to the rapid cung acon of this method of grinding.
For parts, tech support, belts, or discs contact Multool Grinders at 641-628-4253 or sales@multoolgrinders.com

3
Hardware Kit
(Refer to this image for numbered
hardware throughout the instrucons)
Adaptor Plate Drive DrumMain Bracket Tensioner Arm
Belt and Disk
CONTENTS
·1/2” Wrench · #2 Phillips
Screw Driver
· Socket Wrench
·15/16” Socket
REQUIRED TOOLS
For parts, tech support, belts, or discs contact Multool Grinders at 641-628-4253 or sales@multoolgrinders.com
FITTING INSTRUCTIONS
1. Di
sconnect grinder from power source. From the right side
of the grinder, remove wheel guards, grinding stone, and
any anges or washers used with the factory stone. Retain
factory arbor nut for use with Multool drive drum.
11

4
Install the tensioner arm using 8mm bolts (2) and washers (7) into the slots on the main bracket, keeping
the bolts slightly loose for future adjustments in step 7.
For parts, tech support, belts, or discs contact Multool Grinders at 641-628-4253 or sales@multoolgrinders.com
Install the main bracket using bolts (8) through the three cut outs shown in image 3A. With head of
bolt facing the grinder motor, use 6mm nuts (6) and washers (12) and ght en evenly. The adaptor plate
should be ush with the main bracket as shown image 3B. If the Multool is to be used in a vercal
posion simply loosen nuts and tap main bracket to loosen. Swivel to desired posion and reghten
nuts (image 3C).
3.
3A3A 3B3B 3C3C
4.
4A4A 4B4B
Install sloed adaptor plate using either 6mm bolt (3), 5mm bolt (5), or 4.8mm bolt (9) provided (image
2A). Use appropriate size washers under heads (1 or 12). The outer edge of the adaptor plate is tapered.
Face smallest side of taper away from grinder motor (image 2B).
2.
2A2A 2B2B
NOTE: Some grinders may require the
use of addional washers between the
grinder and adaptor plate to clear bolt
heads in step 3. This may require the
use of longer bolts to get full thread
engagement in motor housing.

5
The tensioner arm plate should now be set 1/4” (6mm) from the inside edge of the drive drum (image
7A). Set tracking lever in horizontal posion as shown in image 7B. Use a 1/2” wrench to ghten the two
bolts securing the tensioner arm to the main bracket (image 7C).
7.
7A7A 7B7B
5. Install a 1/2” washer (13) or a 5/8” washer (11) on the grinder sha (image 5A). The drive drum features
a 5/8” bore, however a nylon bushing (10) is provided for 1/2” shas. Fit the drive drum by sliding over
the sha of the grinder (image 5B). If there is interference between the adapter plate bolts and drive
drum, add addional washers behind the drum to gain acceptable clearance. Use 1/2” (13) or 5/8” (11)
diameter washers under the arbor nut and ghten. If drive drum does not run true, use rubber or leather
mallet to tap on the inside edge of rim (image 5C) where run-out may occur.
5A5A 5B5B 5C5C
For parts, tech support, belts, or discs contact Multool Grinders at 641-628-4253 or sales@multoolgrinders.com
7C7C
6. Remove the platen to adjust the tensioner arm plate.
6A6A 6B6B

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For parts, tech support, belts, or discs contact Multool Grinders at 641-628-4253 or sales@multoolgrinders.com
When the belt runs evenly on the contact wheel, re-ghten bolt (image 10A). Briey turn grinder on to
perform nal check. Final tracking adjust ments can be done with the tracking lever (image 10B). Pulling
the tracking lever down moves the belt to the le, while moving it up moves the belt to the right.
10.
10A10A 10B10B
Spin the belt over a few revoluons by hand.
If the belt wanders towards the drive drum,
remove belt, loosen the top bolt of the
tensioner arm (image 7C) and tap the edge of
the platen in small amount on the le using a
mallet (image 9A). If the belt moves towards
the grinder, tap the edge of platen on the right
(image 9B). Reinstall belt and repeat test.
9. 9A9A 9B9B
Collapse tensioner arm unl the catch lever engages. Install the belt and release spring loaded tensioner
arm by liing the catch.
8.
88

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Vibraon or wobble from the drive drum
Vibraon is oen related to the hardware, installaon, or the grinder itself. It is best to remove the stone
or wheel on the opposite side of the grinder to be sure that is not the source of the problem. Runout at the
edge of the drum of approximately 1/16” is within the standard tolerances for this aachment. This small
amount of runout has virtually no impact on how the aachment operates.
The most common issue we have found is that ghtening the arbor nut can somemes cause the drum to
wobble. You may noce that as the nut is ghtened, runout increases. It may be necessary to use a so face
mallet or hammer and block of wood to take out the bind created by ghtening and true the drum on the
sha. Rotate the drum unl the high spot is idened and strike the drum on the inside edge near the screw
bosses for the cover disc. A substanal strike with a dead blow mallet is required to adjust runout. Light
tapping will generally not have an eect.
For more informaon on how to perform the drive drum troubleshoong x, scan the
QR Code on the le or visit our website: hps://multoolgrinders.com/pages/support/videos.html
MULTITOOL TROUBLESHOOTING
For parts, tech support, belts, or discs contact Multool Grinders at 641-628-4253 or sales@multoolgrinders.com
Install the cover plate using screws (4). Clean
face of cover disc with a solvent and install
adhesive backed abrasive disc provided.
12. 1212
For a short instrucon video, see
hps://multoolgrinders.com/pages/support/videos.html
1111
Remove belt and reinstall the platen to
the tensioner arm.
11.

8
Wall Mount
The wall mount bracket frees up valuable
oor space and can be indexed 90 degrees
or use with Multool Workrest. Features
a powdercoat nish and heavy steel
construcon. Makes shop clean-up easy!
Miter Table
Our most popular accessory! Table lts
5 degrees up and 50 degrees down. The
included miter gauge is excellent for
squaring or adjusng an angle.
Foot Switch
This on/o foot switch is an excellent accessory and
will make work in your shop faster, safer, and easier! It
features an all steel momentary foot pedal with non-slip
tracon pads and an 8, 14AWG grounded power cord.
Abrasive Starter Pack
This convenient pack includes 1 each of:
40, 80, 120, 180 grit premium aluminum
zirconia belts, 220 Trizact belt, and a red
Scotch Brite belt.
BELTS AND ACCESSORIES
Polishing Starter Pack
Polish material to a mirror nish with
this Polishing Starter Kit. This kit includes
1 each of: 400, 700, and 1200 grit 3M
Trizact belts, a polishing belt, and a 4 bar
rouge set.
Table Mount
Keep your work surface clear with this
Vise and Grinder Table Mount. Aach
above or below any work surface, while
the receiver hitch style system allows you
to change out dierent tools quickly. It
can also be indexed 90 degrees for use
with the Multool Workrest.
For parts, tech support, belts, or discs contact Multool Grinders at 641-628-4253 or sales@multoolgrinders.com
Grit Type Abrasive Part Number
24 Premium Aluminum zirconia BLT48224-P
40 Premium Aluminum zirconia BLT48240-P
40 Standard Aluminum oxide BLT48240-S
80 Premium Aluminum zirconia BLT48280-P
80 Standard Aluminum oxide BLT48280-S
120 Premium Aluminum zirconia BLT482120-P
120 Standard Aluminum oxide BLT482120-S
180 Premium Aluminum zirconia BLT482180-P
180 Standard Aluminum oxide BLT482180-S
220 (A80) Premium Trizact BLT482TZ220
240 Standard Aluminum oxide BLT482240-S
320 Standard Aluminum oxide BLT482320-S
400 (A45) Premium Trizact BLT482TZ400
700 (A30) Premium Trizact BLT482TZ700
1200 (A16) Premium Trizact BLT482TZ1200
Medium Premium Scotch-Brite BLT482SBM
Fine Premium Scotch-Brite BLT482SBVF
Polishing Standard -BLT482SBP
Belts for Model 8CW