Magnum Industrial MI-81570 User manual

MODEL NO.: MI-81570
OPERATING MANUAL

2
TABLE OF CONTENTS
INTRODUCTION
SECTION 1 Warranty ..............................................................................................3
SECTION 2 Product Specifications .........................................................................4
SECTION 3 Feature Identification ...........................................................................4
SECTION 4 General Safety......................................................................................5
SECTION 5 Product Safety .....................................................................................8
SECTION 6 Grounding Instructions........................................................................10
SECTION 7 Unpacking & Inventory........................................................................12
SECTION 8 Assembly & Adjustments …………………….......................................13
SECTION 9 Cleaning Spiral Cutterhead & Tips……………....................................20
SECTION 10 Operations …………………………………………………………………22
SECTION 11 Maintenance........................................................................................27
SECTION 12 Troubleshooting...................................................................................32
SECTION 13 Parts Diagram & Lists .........................................................................39
INTRODUCTION
This user manual is intended for use by anyone working with this machine. It should be
kept available for immediate reference so that all operations can be performed with
maximum efficiency and safety. Do not attempt to perform maintenance or operate this
machine until you have read and understand the information contained in this manual.
The drawings, illustrations, photographs, and specifications in this user manual represent
your machine at time of print.

4
PRODUCT SPECIFICATIONS
Cutterhead speed RPM 12,000
Motor RPM 19000+/-10% (No Load)
Cutterhead diameter 2"
Max capacity 10" x 1/8"
Cutter inserts qty 20
Motor power input 120 V, 60 Hz, AC Only, 12 Amp
Fence Size Overall 4 ⅜" x 24"
Tables (Overall measurements) 10" x 33.5"
Tables (Overall with extension support) 10" x 53.5"
Shipping Weight 82 lbs
Net Weight 73.4 lbs
Shipping Dimensions 36 ⅝" L x 17" W x 13 ⅜" H
Machine Length 53.5"
Machine Depth with Fence 20"
Machine Height with Fence 13 ¼"
FEATURE IDENTIFICATION

5
GENERAL SAFETY
NOTE: The WARNING! and CAUTION! symbols indicate a potentially hazardous
situation which, if not avoided, COULD result in death or serious injury. READ THIS
MANUAL completely before assembling and operating this machine.
WARNING! TO AVOID serious injury, death, or damage to the machine, please read,
understand, and follow, all Safety and Operating Instructions before assembling and operating
this machine. This manual is not totally comprehensive. It does not and cannot convey every
possible safety and operational problem which may arise while using this machine. The manual
will cover many of the basic and specific safety procedures needed in an industrial environment.
All federal and state laws, and any regulations having jurisdiction covering the safety
requirements for use of this machine, take precedence over the statements in this manual. Users
of this machine must adhere to all such regulations.
WARNING! Exposure to the dust created by power sanding, sawing, grinding, drilling and
other construction activities may cause serious and permanent respiratory or other injury,
including silicosis (a serious lung disease), cancer, and death. Avoid breathing the dust, and avoid
prolonged contact with dust. The dust may contain chemicals known to the State of California to
cause cancer, birth defects or other reproductive harm.
Some examples of these chemicals are:
• Lead from lead-based paints.
• Crystalline silica from bricks, cement and other masonry products.
• Arsenic and chromium from chemically-treated lumber.
Always operate tool in well ventilated area and provide for proper dust removal. Use a dust
collection system along with an air filtration system whenever possible. Always use properly
fitting NIOSH/OSHA approved respiratory protection appropriate for the dust exposure, and wash
exposed areas with soap and water.
WARNING! ALWAYS wear eye protection. Any machine can throw debris into the eyes during
operations, which could cause severe and permanent eye damage. Everyday eyeglasses are
NOT safety glasses. ALWAYS wear Safety Goggles (that comply with ANSI standard Z87.1) when
operating power tools.
WARNING! ALWAYS wear hearing protection. Plain cotton is not an acceptable protective
device. Hearing equipment should comply with ANSI S3.19 Standards.
WARNING! ALWAYS wear a NIOSH/OSHA approved dust mask to prevent inhaling dangerous
dust or airborne particles.

6
GENERAL SAFETY (cont.)
ALWAYS keep the work area clean, well lit, and organized. DO NOT work in an area that has
slippery floor surfaces from debris, grease, and wax.
CAUTION! ALWAYS unplug the machine from the electrical receptacle when making
adjustments, changing parts or performing any maintenance.
AVOID ACCIDENTAL STARTING. Make sure that the power switch is in the “OFF” position before
plugging in the power cord to the electrical receptacle.
WARNING! AVOID a dangerous working environment. DO NOT use electrical tools in a damp
environment or expose them to rain or moisture.
WARNING! CHILDPROOF THE WORKSHOP AREA by removing switch keys, unplugging
tools from the electrical receptacles, and using padlocks.
CAUTION! DO NOT use electrical tools in the presence of flammable liquids or gasses.
DO NOT FORCE the machine to perform an operation for which it was not designed. It will do a
safer and higher quality job by only performing operations for which the machine was intended.
WARNING! DO NOT stand on a machine. Serious injury could result if it tips over or you
accidentally contact any moving part.
DO NOT store anything above or near the machine.
WARNING! DO NOT operate any machine or tool if under the influence of drugs, alcohol, or
medication.
EACH AND EVERY time, check for damaged parts prior to using any machine. Carefully check all
guards to see that they operate properly, are not damaged, and perform their intended functions.
Check for alignment, binding or breakage of all moving parts. Any guard or other part that is
damaged should be immediately repaired or replaced.
WARNING! Ground all machines. If any machine is supplied with a 3-prong plug, it must be
plugged into a 3-contact electrical receptacle. The third prong is used to ground the tool and
provide protection against accidental electric shock. DO NOT remove the third prong.
CAUTION! Keep visitors and children away from any machine. DO NOT permit people to be in
the immediate work area, especially when the machine is operating.

7
GENERAL SAFETY (cont.)
KEEP protective guards in place and in working order.
CAUTION! MAINTAIN your balance. DO NOT extend yourself over the tool. Wear oil resistant
rubber soled shoes. Keep floor clear of debris, grease, and wax.
MAINTAIN all machines with care. ALWAYS KEEP machine clean and in good working order.
KEEP all blades and tool bits sharp.
NEVER leave a machine running, unattended. Turn the power switch to the OFF position. DO
NOT leave the machine until it has come to a complete stop.
REMOVE ALL MAINTENANCE TOOLS from the immediate area prior to turning the machine ON.
WARNING! STAY ALERT, watch what you are doing, and use common sense when operating
any machine. DO NOT operate any machine tool while tired or under the influence of drugs,
alcohol, or medication. A moment of inattention while operating power tools may result in
serious personal injury.
WARNING! USE ONLY recommended accessories. Use of incorrect or improper accessories
could cause serious injury to the operator and cause damage to the machine. If in doubt, DO NOT
use it.
THE USE of extension cords is not recommended for 230V equipment. It is better to arrange the
placement of your equipment and the installed wiring to eliminate the need for an extension cord.
If an extension cord is necessary, refer to the chart in the Grounding Instructions section to
determine the minimum gauge for the extension cord. The extension cord must also contain a
ground wire and plug pin.
CAUTION! Wear proper clothing, DO NOT wear loose clothing, gloves, neckties, or jewelry.
These items can get caught in the machine during operations and pull the operator into the
moving parts. Users must wear a protective cover on their hair, if the hair is long, to prevent it from
contacting any moving parts.
SAVE these instructions and refer to them frequently and use them to instruct other users.

8
PRODUCT SAFETY
1. Serious personal injury may occur if normal safety precautions are overlooked or ignored.
Accidents are frequently caused by lack of familiarity or failure to pay attention. Obtain
advice from supervisor, instructor, or another qualified individual who is familiar with this
machine and its operations.
2. Every work area is different. Always consider safety first, as it applies to your work area.
Use this machine with respect and caution. Failure to do so could result in serious personal
injury and damage to the machine.
3. Prevent electrical shock. Follow all electrical and safety codes, including the National
Electrical Code (NEC) and the Occupational Safety and Health Regulations (OSHA). All
electrical connections and wiring should be made by qualified personnel only
4. WARNING! TO REDUCE the risk of electrical shock. DO NOT use this machine outdoors.
DO NOT expose to rain. Store indoors in a dry area.
5. STOP using this machine, if at any time you experience difficulties in performing any
operation. Contact your supervisor, instructor or machine service center immediately.
6. Safety decals are on this machine to warn and direct you to how to protector yourself or
visitors from personal injury. These decals MUST be maintained so that they are legible.
REPLACE decals that are not legible.
7. DO NOT leave the unit plugged into the electrical outlet. Unplug the unit from the outlet when
not in use and before servicing, performing maintenance tasks, or cleaning.
8. WARNING! DO NOT handle the plug or jointer with wet hands
9. USE only accessories as described in this manual and recommended by WAHUDA.
10. DO NOT pull the jointer by the power cord. NEVER allow the power cord to come in contact
with sharp edges, hot surfaces, oil or grease.
11. ALWAYS turn the power switch “OFF” before unplugging the jointer. DO NOT unplug the
jointer by pulling on the power cord. ALWAYS grasp the plug, not the cord.
12. REPLACE a damaged cord immediately. DO NOT use a damaged cord or plug.
13. DO NOT use the jointer as a toy. DO NOT use near or around children.
14. ENSURE that the machine sits firmly before using. If the machine wobbles or is unstable,
correct the problem by attaching to a bench top prior to operation.
15. This machine is designed to process wood ONLY.
16. WARNING! NEVER position fingers or thumbs near the cutterhead.
17. Long pieces of stock should ALWAYS be supported with some type of fixture.
18. DO NOT operate jointer with dull or damaged blades.
19. MAKE CERTAIN that the jointer is properly adjusted prior to use.
20. DO NOT try and remove excessive amounts of wood in one single pass.
21. INSPECT all stock before beginning operations ensuring that there are no foreign objects
embedded in the wood, loose knots, or knots that may become loose during operation.
22. WARNING! DO NOT attempt to remove jams until power is disconnected and all moving
parts have come to a complete stop.
23. MAKE SURE that there is adequate operating space on both the infeed and outfeed sides of
the jointer before operating.
24. WARNING! DO NOT attempt to joint or plane wood that is less than 10” long, narrower
than ¾”, or less than ½” thick.

10
GROUNDING INSTRUCTIONS
WARNING! This machine MUST BE GROUNDED while in use to protect the operator from
electric shock. In the event of a malfunction or breakdown, GROUNDING provides the path of
least resistance for electric current and reduces the risk of electric shock. The plug MUST be
plugged into a matching electrical receptacle that is properly installed and grounded in
accordance with ALL local codes and ordinances.
If a plug is provided with your machine DO NOT modify the plug. If it will not fit your electrical
receptacle, have a qualified electrician install the proper connections to meet all electrical codes
local and state. ALL connections must also adhere to NEC and OSHA mandates.
WARNING! IMPROPER ELECTRICAL CONNECTION of the equipment-grounding conductor
can result in risk of electric shock. The conductor with the green insulation (with or without yellow
stripes) is the equipment-grounding conductor. DO NOT connect the equipment-grounding
conductor to a live terminal if repair or replacement of the electric cord or plug is necessary.
Check with a qualified electrician or service personnel if you do not completely understand the
grounding instructions, or if you are not sure the tool is properly grounded.
WARNING! Electrocution or fire could result if this machine is not grounded properly or if the
electrical configuration does not comply with local and state electrical codes.
MAKE CERTAIN the machine is disconnected from power source before starting any electrical
work.
MAKE SURE the circuit breaker does not exceed the rating of the plug and receptacle.
The motor supplied with your machine is a 115 volt, 60 hertz, single phase motor. Never connect
the green or ground wire to a live terminal. A machine with a 115 volt plug should only be
connected to an outlet having the same configuration as the plug.
WARNING! To reduce the risk of fire or electrical shock, use the proper gauge of extension
cord. When using an extension cord, be sure to use one heavy enough to carry the current your
machine will draw.
The smaller the gauge-number, the larger the diameter of the extension cord is. If in doubt of the
proper size of an extension cord, use a shorter and thicker cord. An undersized cord will cause a
drop in line voltage resulting in a loss of power and overheating.
CAUTION! USE ONLY a 3-wire extension cord that has a 3-prong grounding plug and a 3-pole
receptacle that accepts the machine’s plug. If you are using an extension cord outdoors, be sure it
is marked with the suffix “W-A” (“W” in Canada) to indicate that it is acceptable for outdoor use.

11
GROUNDING INSTRUCTIONS (cont.)
Make certain the extension cord is properly sized, and in good electrical condition. Always replace
a worn or damaged extension cord immediately or have it repaired by a qualified person before
using it.
Protect your extension cords from sharp objects, excessive heat, and damp or wet areas.
MINIMUM RECOMMENDED GAUGE FOR EXTENSION CORDS (AWG)
115 VOLT OPERATION ONLY
25’ LONG
50’ LONG
100’ LONG
150’ LONG
0 to 6 Amps
18 AWG
16 AWG
16 AWG
14 AWG
6 to 10 Amps
18 AWG
18 AWG
14 AWG
12 AWG
10 to 12 Amps
16 AWG
16 AWG
14 AWG
12 AWG

12
UNPACKING & INVENTORY
Check shipping carton and machine for damage before unpacking. Carefully remove packaging
materials, parts and machine from shipping carton. Always check for and remove protective
shipping materials around motors and moving parts. Lay out all parts on a clean work surface.
Be EXTREMELY CAREFUL working around the cutter tips as they are VERY SHARP!!!
Remove any protective materials and coatings from all of the parts and the jointer except for the
cutterhead. Specific cutterhead cleaning instructions follow. The protective coatings can be
removed by spraying WD-40 on a soft cloth and wiping the surfaces.
After cleaning, apply a good quality paste wax to the table surfaces being careful of the
cutterhead. Make sure to buff out the wax before assembly.
NOTE: Some parts pictured may already be installed on your machine at the factory.
A - Jointer D - Fence Bracket H - 2.5 mm & 4mm Hex Wrench
B - Push Blocks E - Fence Sliding Bracket I - Yellow Safety Key for Switch
C –Port Adapter F - Sliding Bracket Lever, Washer & Nut J - T-Torx Wrench for Cutterhead
G - Fence Square Nuts & Screws (2 each) K - Fence
A
B
C
D
E
F
K
G
H
I
J
K
J
I
H
G
F
A
B
C
DE

13
ASSEMBLY & ADJUSTMENTS
WARNING! MAKE CERTAIN THAT THE MACHINE IS DISCONNECTED FROM THE
POWER SOURCE BEFORE ASSEMBLY AND ADJUSTMENTS
FENCE ASSEMBLY PROCEDURE
1. Face the rear of the jointer and remove the 4 screws (A) using the provided 4mm Hex Wrench.
See FIG 1
2. Using the provided 4mm Hex Wrench, install Fence Bracket (D from Inventory page 12) using
the 4 screws removed in the previous step. Tighten screws securely. See FIG 2

14
ASSEMBLY & ADJUSTMENTS (cont.)
3. Locate the Fence Sliding Bracket (E on page 12) and the 2 screws and 2 square nuts (G on
page 12). Insert screws through the Fence Sliding Bracket upper holes “A” in FIG 3, and
thread the square nuts on by hand about 3 compete turns. See FIG 4. Do not tighten at this
time.

15
ASSEMBLY & ADJUSTMENTS (cont.)
4. Locate fence (K on page 12) and slide from end, with the back of fence facing bracket, over
the square nuts as shown in FIG 5. Note that the bottom of the fence is beveled and the
square nuts have flats on them so you may have to rotate them slightly to slide the fence on.
5. Slide the fence until centered on the bracket and then tighten the 2 screws used in step 3
using the 4mm Hex Wrench. See FIG 6

16
ASSEMBLY & ADJUSTMENTS (cont.)
6. Facing the rear of the jointer, place the Sliding Bracket Fence Assembly onto the Fence
Bracket and slide forward (towards front of the jointer) until the table holes are half exposed as
shown in FIG 7.
7. Locate Sliding Bracket Lever, Washer & Nut (F on page 12). Place the nut under the Bracket
with the convex surface facing downward. Then place the washer on top of the Sliding Bracket
and place the Lever through the washer and thread into the convex nut just enough until fence
still slides freely. See FIG 8 and FIG 9. Then slide the fence assembly completely back.

17
ASSEMBLY & ADJUSTMENTS (cont.)
CUTTERHEAD GUARD
The cutterhead guard has a tension return spring. The tension on this spring is set at the
factory. When the guard is installed properly it should return to the fence automatically
after the work piece has passed over the cutterhead. Be sure the guard is functioning
properly every time before using the jointer. If adjustment is necessary, remove the guard
and while holding guard attachment base, rotate guard counter-clockwise to increase
tension. Then mount guard base while holding guard and mounting base to prevent from
losing tension.
DUST PORT & ADAPTER
A dust port (A) is attached with the jointer to help connect it to a standard 4 inch vacuum
hose. If needed for 2-1/2” vacuum hose, you can convert it by the supplied adapter (B).

18
ASSEMBLY & ADJUSTMENTS (cont.)
FENCE ADJUSTMENTS
The fence can be tilted from 90 to 135 degrees. There are 2 adjustable stop set screws for
these limits. See FIG 17 for the location of these set screws.
1. To set the 90 degree stop, slightly loosen fence lever “B” and lift fence slightly clearing tables
and slide fence forward approximately 1 inch. Let fence rest on tables. Tighten Fence Sliding
Bracket Lever “A”. Place a square against the fence and use the provided 2.5mm Hex Wrench “C”
to adjust the 90 degree set screw against the stop. See FIG 18 and FIG 19 (following page)

19
ASSEMBLY & ADJUSTMENTS (cont.)
2. To set the 135 degree stop, loosen fence lever “A” and slide fence back completely and
re-tighten lever “A”. Place a 45 degree angle against the fence and use the provided 2.5mm
Hex Wrench to adjust the 135 degree set screw against the stop. NOTE: The set screw is
set deep into the angled hole at the factory. If necessary, use a flashlight to locate it.
See FIG 20 and FIG 21
NOTE: These positive stops enable you to quickly position the table to the 90 and 135 degree
settings. After successful adjustments, tilt fence back to 90 degrees and lock into position.

20
CLEANING SPIRAL CUTTERHEAD & TIPS
WARNING! MAKE CERTAIN THAT THE MACHINE IS DISCONNECTED FROM THE
POWER SOURCE BEFORE PERFORMING ANY MAINTENANCE PROCEDURES
WARNING! To prevent serious personal injury NEVER rotate the cutterhead by
hand. Cutter tips are razor sharp! Always wear heavy leather gloves when handling
the cuttherhead. Avoid touching the cutter insert by hand without protection.
MAGNUM spiral cutterheads are machined with a film of oil that may be left over from the process.
Removing this oil residue, if apparent, is required before you use your new machine.
Step 1 - Place the machine at a comfortable working height and supply ample lighting. The
cutterhead guard should still be removed from previous instructions.
Step 2 - NOTE: Do not get solvent on any painted portion of the machine.
Use the supplied 4mm Hex Wrench inserted into the end of the cutterhead at front of jointer
to rotate and hold cutterhead into position. Then, using the supplied T-25 T-Torx Wrench
(J on page 12), carefully remove the cutter tips. Continue rotating the cutterhead with the
Hex Wrench and remove the remaining tips. See FIG A

21
CLEANING SPIRAL CUTTERHEAD & TIPS (cont.)
Step 3 - Separate the tips from the screws and place in separate containers with a bit of mineral
spirits or non-chlorinated brake cleaner. Once all are removed, wipe down the bare cutterhead
using rags with whichever solvent you chose. Once the oil is wiped off, use an air compressor or a
can of pressurized air to clear each seat and screw hole on the cutter head. This will aid in knife
and cutter tips reinstallation.
Step 4 - Lubricate the Torx screw threads with light machine oil, wipe the excess oil off the threads,
Place each knife in the seat and slightly snug each screw using the Hex Wrench to hold the
cutterhead in position. Once you get a row of tips seated and slightly tightened down, repeat by
going back over each cutter tip and tighten down the screws securely to 48 to 50 inch / lbs.
NOTE: NOT FT/LBS !
After all assembly and adjustment instructions are completed, use a sacrificial board after cleaning
to test for remaining oil. If oil is still apparent, repeat the cleaning method you used above.

22
OPERATIONS
NOTE: This operations section was designed to give instructions on the basic operations of this
jointer. However, it is in no way comprehensive of every jointer operation. It is strongly
recommended that you read books, trade magazines, or get formal training to maximize the
potential of your jointer while minimizing the risks.
WARNING! NEVER PASS HANDS DIRECTLY OVER THE CUTTERHEAD.
WARNING! ALWAYS USE CUTTERHEAD GUARD, PUSH BLOCKS, AND KEEP HANDS
AWAY FROM CUTTERHEAD.
NOTE: THE TIPS ON THE JOINTER WILL NOT WEAR EVENLY BY FEEDING THE WOOD
THROUGH THE SAME SPOT ON THE TABLE EVERY TIME. FEED THE WOOD THROUGH
THE JOINTER AT DIFFERENT SPOTS ON THE TABLE BY REPOSITIONING THE FENCE,
WHEN POSSIBLE, TO HELP ELIMINATE UNEVEN WEAR OF THE TIPS.
STARTING AND STOPPING JOINTER
1. The on/off switch (A) is located on the front of the jointer. To turn the jointer "ON", fully insert
yellow safety key and move switch (A) upwards.
2. To turn the jointer "OFF", move the switch downwards and remove safety key. See FIG 24
WARNING! Remove yellow safety key when unit is not in use to prevent
unauthorized operation