Magna-Matic MAG-8000-7 Operating Instructions Manual

Helping you get the most

out of your shop for the last 40 years.

OPERATING INSTRUCTIONS

MAG-8000-7 Universal

Lawn Mower Blade Sharpener

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of products & other helpful info.

1

Instructions given with this symbol are for personal safety. Be
sure you and your employees follow them. A careful operator is
the best insurance against accidents.

Before handling any equipment read and understand the instruc­tions.

When using electric tools, basic safety
precautions should always be followed to
reduce the risk of re, electric shock, and
personal injury including the following.

1. Grounding Instructions - This tool must be grounded while
in use to protect the oper-ator from electric shock. The tool
is equipped with an approved three conductor cord and three
prong grounding type plug to t the proper grounding type recep­tacle. The green (or green and yellow) wire is the grounding
wire.

2. Extension Cords - Use only three wire extension cords
which have three prong grounding type plugs and three pole
receptacles which accepts the tool’s plug. Replace or repair
damaged cords.

THE SAFE WAY IS THE

ONLY WAY TO GRIND!

3. Keep Work Area Clean - Cluttered areas and benches invite

accidents.

4. Consider Working Enviroment - Don’t use power tools in
damp or wet locations. Keep work area well lit. Don’t expose
power tools to rain. Do not use tool in presence of ammable
liquids or gases.

5. Keep Childern Away - All visitors should be kept a safe
distance form the work area. Do not let visi-tors have contact with
the tool or the extension cord.

6. Store Idle Tools - When not in use, tools should be stored in
dry, high or locked-up places out of reach of children.

7. Don’t Force Tool - It will do the job better and safer at the rate
for which it was designed.

WARNING

2

8. Don’t Over-Reach - Keep proper footing and balance at all
times.

9. Wear Proper Apparel - Do not wear loose clothing or jewelry
that can get caught in moving parts. Rubber gloves and non-skid
foot wear are recommended when working outdoors. Wear pro­tective hair covering to contain long hair.

10. Use Safety Glasses - Also face or dust mask-wrap around
goggles.

11. Don’t Abuse Cord - Never carry tool by cord or yank it to
disconnect from receptacle. Keep cord from heat, oil, and sharp
edges.

12. Disconnect Tool - When not in use; before servicing; when
changing grinding wheel.

13. Avoid Accidental Starting - Don’t carry plugged in tool. Be
sure switch is off when plugging in.

14. Grinding Wheels - Use only grinding wheels having a
maximum operating speed of 5500 RPM. KEEP GUARDS IN
PLACE.

15. Guard Against Electrical Shock - Prevent body contact with
grounded surface. For example: pipes, radiators, etc.

16. Stay Alert - Watch what you are doing. Use common sense.
Do not operate tool when you are tired, or under the inuence of
any drugs or alcohol.

17. Check Damaged Parts - Before further use of the tool, a
guard or other part that is damaged should be carefully checked
to determine that it will operate properly and perform its intended
function. Check for alignment of moving parts, breakage of parts,
mounting and any other condition that effect its operation. All
parts should be properly repaired or replaced. Do not use this
tool if the switch does not turn it on or off.

18. Never Leave Tool Unattended - Turn the power off. Don’t
leave the tool until it comes to a complete stop.

19. Replace Cracked Wheels Immediately.

20. Read - the enclosed A Primer on Grinding Wheel Safety
(Norton Publication)

21. Never attach the provided spanner wrench or any other
object to the grinder.

3

! BEGIN HERE !

1. Unpack and read instructions.

2. Make sure the electrical switch is “OFF”.

3. Remove white plastic on the grinding wheel arbor, (for transit only).

4. Mount a grinding wheel on the arbor (the 1/2” wheel needs the
1/2” spacer, included) torque the arbor nut with the spanner wrench
(included). Remember the arbor nut is a left-handed thread.

5. Attach the motor guard plate to black bolting bars.

6. Attach the grit guard, and crank handle. Test the crank to be sure that
the treaded rod has not become bent in transit, if it has immediatly call
1-800-328-1110, and request a new one.

7. Locate a 115 volt grounded single phase 60 Hz electrical outlet and
plug in the grinder cord.

8. Switch to “ON” and observe that the wheel rotation is clear and
smooth. (minimum vibration)

9. Switch to “OFF” and let the grinder run to a stop.

NOTE: The MAG-8000 base has two open mounting holes for stationary
mounting. (5/16” bolt) The grit guard exit port is designed to connect to
your shop vac for a clean grinding environment.

Lawn mower blade knives have sharp, cutting edges. Wear

protective clothing recommended by the blade manufacturer.

DO NOT BE INJURED

By The Cutting Edges

DO NOT BE INJURED - By the Moving Grinding Wheel

PREPARATION OF BLADE TO BE SHARPENED

1. Clean the blade to its base material, use a MAG-12000 Blade Cleaner.

2. Remove all burrs & nicks from the underside of the balde, to facilitate
smooth movement of the blade on the work table. Use a conventional
pedestal grinder.

4

ADJUSTING THE CUTTING EDGE ANGLE

The edge angle can be varied plus or minus via the adjusting crank. A
clockwise rotation of the crank will lower the wheel into the work table
resulting in a greater than 30° angle. A counter-clockwise rotation of the
crank will raise the wheel resulting in a lesser than 30° angle.

SHARPENING STRAIGHT

(OR CONVENTIONAL) BLADES

Use the 1” wide grinding wheel for highest performance.

DO NOT BE INJURED BY THE BLADE

MAKE SURE YOU WEAR SAFETY GOGGLES & GLOVES

1. Securely locate the at worktable over the rounded curved blade
worktable and clamp with the vice grip.

2. Switch to “ON”

3. Adjust the grinding wheel crank to come in contact with the work
table. The more you cut into the work table the steeper the edge
angle.

4. To sharpen the blade, place it on the work table of the grinder. With
your left hand provide the blade with a rm downward force to
keep constant contact with the work table. Also use your
left hand to push the blade into the grinding wheel. Then use your
right hand to provide the back and forth motion to slide the blade
against the grinding wheel (if you are left handed, just do the oppo­ site.) The back and forth movement should be the length of the
desired blade edge being sharpened. The force pushing into the
grinding wheel should be substantial, resulting in a continious stream
of sparks from the grinding wheel. The grinding process should be
continious without interruption, until nished.

3. Check to make sure the blade is straight (not bent) use the MAG-1000
Blade Balancer.

WARNING

Do Not attempt to straighten a
hardened blade. You may create
fractures not visible to the eye.

REPLACE ALL BENT BLADES

5

SHARPENING CURVED

(OR MULCHING) BLADES

Always keep the blade in constant level contact with the work table when
grinding. Use the 1/2” wide grinding wheel with the 1/2” arbor spacer.

DO NOT BE INJURED BY THE BLADE

MAKE SURE YOU WEAR SAFETY GOGGLES & GLOVES

1. Remove the clamp-able work table and expose the narrow rounded
work table.

2. Switch to “ON”

3. Adjust the grinding wheel to almost come in contact with the work
table. The edge angle will be 30º.

4. Place the blade on the work table in such a manner that you will
grind the new edge from the inside of the blade to the tip. NOTE: The
force needed to push the blade into the grinding wheel should be
VERY light (a light touch), allow the blade to smoothly follow its
curves against the rounded work table. You will need to compensate
for the varying curves by allowing the blade to slightly come away
from the grinding wheel and then back to it. A lighter force with
a little practice will produce an unparalleled, professional, and uniform
appearance along the blade edge.

BLADE SERVICING HINTS

The serviced blade must be:

1. Clean (use the MAG-12000 Blade Cleaner)

2. In balance (use the MAG-1000 Blade Balancer)

3. Have sharp cutting edges with correct tip geometry. (use either the
MAG-8000 or MAG-9000 Blade Sharpeners)

To service a lawn mower blade in the least amount of time:

1. Prepare the blade to be sharpened as outlined on page 3.

2. Determine the balance of the blade.

3. Remember the heavy end.

4. Sharpen the light end rst.

5. Sharpen the heavy end.

With enough experience you will be able to approximate closely how
much more re-sharpening is needed on the heavy end to bring it into
balance.

6

GRINDING WHEEL

REPLACEMENT PROCEDURE

Use the spanner wrench provided with the MAG-8000.

1. Unplug the grinder.

2. Remove the motor-side transparent guard plate.

3. Loosen the arbor nut in a CLOCKWISE direction
with the spanner wrench provided.

4. Replace the worn wheel with a properly balanced &
speed rated grinding wheel.

5. Leave the blodders provided with the wheel.

6. Locate the new wheel on the arbor and rmly
tighten the wheel nut in a COUNTER-CLOCKWISE
direction with the spanner wrench provided.
Remember to remove the arbor spacer when
changng from the ” wide grinding wheel to the 1”
wide grinding wheel.

7. Check to result in a free wheel rotation. (Minimum
vibration).

8. “Plug-in” and switch “ON” assure smooth rotation.
(Minimum vibration).

Contact MAGNA-MATIC CORP. for alternative and
replacement wheels, as well as grinding wheel balanc­ers or for information on the complete MAG-10100 SER­VICE CENTER STAND.

MAG-10100
Service Center
Stand for use
with all MAG­Shaprpeners

Sharpened Mulching Blade

7

IMPROPER USE MAY CASUE

BREAKAGE AND SERIOUS INJURY

DO

DO always handle and store

wheels in a careful manner.
DO visually inspect all wheels
before mounting for possible
damage and ring test vitried
wheels
DO check machine speed against
the established maximum safe
operating speed marked on the
wheel.
DO check mounting anges for
equal and correct diameter.
DO use mounting blotters when
supplied with the wheels.
DO be sure work rest is properly
adjusted (center of wheel or
above; no more thatn 1/8” away
from wheel).
DO always use a safety guard
covering at least one-half of the
grinding wheel.
DO allow newly mounted wheels
to run at operating speed, with
guard in place, for at least one
minute before grinding.
DO always wear protective safety
glasses and additional eye & face
protection if required.

DO NOT

DO NOT use a cracked wheel or one

that has been dropped or become
damaged.
DO NOT force a wheel onto the
machine or alter the size of the
mounting hole - if wheel will not t the
machine, get one that will.
DO NOT ever exceed maximum
operating speed established for the
wheel.
DO NOT use mounting anges on
which the bearing surfaces are not
clean, at and free of burrs.
DO NOT tighten the mounting nut
excessivly.
DO NOT grind on the side of the
wheel (see ANSI Code B7.1 for
exception).
DO NOT start the machine untile the
wheel guard is in place.

DO NOT jam work into the wheel.
DO NOT stand directly in front of a

grinding wheel whenever a grinder is
started.
DO NOT force grinding so that the
motor slows noticeably or work gets
hot.

WARNING

IMPORTANCE OF PROPER MACHINE MAINTENANCE

Grinding is a safe operation if the few basic rules listed below
are followed. These rules are based on material contained
in the ANSI B7.1 Code for “Use, Care, and Protection of
Abrasive Wheels.” For your safety, we suggest you benet
from the experience of others and carefully follow these
rules.

8

ROTARY LAWN MOWER BLADE TIP GEOMETRY

Cutting Tip Geometry - The tip cuts the most grass. To

produce a proper tip three reliefs are neccessary.

NOT

ACCEPTABLE

Worn away bottom surface at the tip. As
shown, is a sign of poor blade mainte­nance. This blade tears the grass.

RELIEF 1 (TOP VIEW)
GENERALLY 2º - 5º

RELIEF 2 (END VIEW)
GENERALLY 60º

NOTE: The smaller the angle the stronger and
longer lasting the cutting edge. In sandy soils use
80º, in heavy soils use 70º

RELIEF 3 (END VIEW)
OPTIMUM (generally difcult to produce)
Built in by manufacturer.

RELIEF 3 (END VIEW)
GENERALLY 0º

MAG-1000 Professional
Blade Balancer

MAG-1000 Professional
Blade Balancer

9

Specications

of the MAG-8000 Series

Universal Lawn Mower Blade Sharpener

MAG-8000-7 (standard)

1 HP, TEFC, ‘F’ Insulated Motor
3450 RPM (motor)
4200 RPM (grinding wheel)
115 volts, Single Phase, 60 Hz
Greased-sealed ball bearings
1-1/4 inch arbor (left handed nut)
7 inch dia. x 1 inch grinding wheel, Rated at 5500 RPM
7 inch dia. x 1/2 inch grinding wheel, Rated at 5500 RPM
Crank adjustment for grinding angle
Unit Weight = 75 Lbs

MAG-8000-7 (EURO standard)

1 HP, TEFC, ‘F’ Insulated Motor
2850 RPM (motor)
3470 RPM (grinding wheel)
220 volts, Single Phase, 50 Hz
Greased-sealed ball bearings
1-1/4 inch arbor (left handed nut)
7 inch dia. x 1 inch grinding wheel, Rated at 5500 RPM
7 inch dia. x 1/2 inch grinding wheel, Rated at 5500 RPM
Crank adjustment for grinding angle
Unit Weight = 35 Kg

10

WARRANTY

This warranty is extended only to MAGNA-MATIC’s com­mercial customers. To protect the quality of this tool, every
step in its manufacture has been carefully controlled. It is
constructed of only the nest materials by skilled craftsmen
who take pride in their work. MAGNA-MATIC CORP war­rants the tools manufactured and/or repaired to be free of
defects in material and workmanship for a period of 365 days
after purchase. Any tool or part proved to MAGNA-MATIC’s
satisfaction to be defective during that period will be repaired
or replaced at MAGNA-MATIC’s option if returned prepaid.
MAGNA-MATIC’s sole obligation and your exclusive remedy
under this warranty shall be limited to such repair or replace­ment. In no event shall MAGNA-MATIC be liable for any
consequential or incidental damages. This warranty does not
apply to parts (motor & grinding wheel) not manufactured
by MAGNA-MATIC or failing due to ordinary wear, subjected
to abuse, accidental damage, improper operations, main­tenance or repair, or to other damage by circumstances
beyond MAGNA-MATIC’s control.

This warranty is exclusive and in lieu of all other expressed
or implied warranties including without limitation, the implied
warranties of merchantability and tness for a particular pur­pose.

W4599 County Road IW
Waldo WI 53093
USA

Phone: [phone]
FAX: [phone]
Toll Free USA & Canada 1-800-328-1110

© 2001 Magna-Matic Corporation, all rights reserved.

http://www.magna-matic.com
[e-mail]

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