Master Lock MK-470 User Manual
Model MK-470
Tile Saw
Owner’s Manual
Parts List &
Operating
Instructions
Warning:
• For your own safety read instruction manual
before operating saw.
• Wear eye protection.
• Use splash hood for every operation for which it
can be used.
• Disconnect saw before servicing, when
changing cutting wheels, and cleaning.
• Use tool only with smooth edge cutting wheels
free of openings and grooves.
• Replace damaged cutting wheel before
operating.
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please record the serial number (Located on the
cover post casting) of your saw in this block.
serial number
For your warranty to be effective, complete the
warranty card (include the serial number) and
mail it in as soon as possible.
Manual Part No. 156934
Revision 10/01
Ta b l e o f C o n t e n t s
General Safety Instructions pg 1-2
Safety Messages
Hazard Symbols
Damage Prevention Messages
Safety Label Locations
Saw Features pg 2-3
Motor
Cutting Head
Water Recirculation System
Unpacking and Preparation pg 3
Initial Assembly pg 3-5
Installing the Cutting Head
Installing the Blade
Installing the Water Pump
Electrical Requirements
Lockout Method
Sawing Operations pg 5-6
General Cutting Guidelines
Table Markings
Maintenance pg 6
Trouble Shooting pg 7
Optional Accessories pg 7
Parts Listing pg 8-9
Exploded View pg. 8
How to Order Repair Parts back cover
Returned Merchandise Policy back cover
• WEAR PROPER APPAREL. Do not wear loose clothing, gloves, neckties, rings, bracelets, or other jewelry which may get caught
in moving parts. Nonslip footwear is recommended. Wear protective hair covering to contain long hair.
• ALWAYS USE SAFETY GLASSES. Also use face or dust mask if cutting operation is dusty. Everyday eyeglasses only have impact
resistant lenses, they are NOT safety glasses.
• SECURE WORK. Use clamps or a vice to hold work when practical. It‘s safer than using your hand and it frees both hands to
operate tool.
• DON’T OVERREACH. Keep proper footing and balance at all times.
• MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for best and safest performance. Follow instructions for lubricating
and changing accessories.
• DISCONNECT TOOLS before servicing; when changing accessories, such as blades, bits, cutters, and the like.
• REDUCE THE RISK OF UNINTENTIONAL STARTING. Make sure switch is in off position before plugging in.
• USE RECOMMENDED ACCESSORIES. Consult the owner’s manual for recommended accessories. The use of improper
accessories may cause risk of injury to persons.
• NEVER STAND ON TOOL. Serious injury could occur if the tool is tipped of if the cutting tool is unintentionally contacted.
• 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, binding of moving
parts, breakage of parts, mounting, and any other conditions that may affect its operation. A guard or other part that is damaged
should be properly repaired or replaced.
• DIRECTION OF FEED. Feed work into a blade or cutter against the direction of rotation of the blade or cutter only.
• NEVER LEAVE TOOL RUNNING UNATTENDED. TURN POWER OFF. Don’t leave tool until it comes to a complete stop.
• SAVE THESE INSTRUCTIONS.
I M P O RTANT SAFETY INSTRUCTIONS FOR T H E MK-470 T I L E S AW
Foryour safety, read all instructions!
These safety precautions should be followed at all times. Failure to follow these safety
precautions could result in injury to yourself and others. Safety is a combination of operator
common sense and alertness at all times when the saw is being used.
• KEEP GUARDS IN PLACE and in working order.
• REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking to see that keys
and adjusting wrenches are removed from tool before turning it on.
• KEEP WORK AREA CLEAN. Cluttered areas and benches invite accidents.
• DON’T USE IN DANGEROUS ENVIRONMENT. Don’t use power tools in damp or wet
locations, or expose them to rain. Keep work area well lighted.
• KEEP CHILDREN AWAY. All visitors should be kept safe distance from work area.
• MAKE WORKSHOP KID PROOF with padlocks, master switches, or by removing starter keys.
• DON’T FORCE TOOL. It will do the job better and safer at the rate for which it was designed.
• USE RIGHT TOOL. Don’t force tool or attachment to do a job for which it was not designed.
• USE PROPER EXTENSION CORD. Make sure your extension cord is in good condition.
When using an extension cord, be sure to use one heavy enough to carry the current your
product will draw. An undersized cord will cause a drop in line voltage resulting in loss of
power and overheating. Extension Cords Table 1 shows the correct size to use depending
on cord length and name plate ampere rating. If in doubt, use the next heavier gage. The
smaller the gage number, the heavier the cord.
Safety Messages
A safety message informs you about potential hazards that could hurt you or others. Each safety message is preceded by
one of the three words: Danger, Warning, or Caution.
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Danger
Warning
Caution
You WILL be KILLED or SERIOUSLY injured if you don’t follow instructions.
You CAN be KILLED or SERIOUSLY injured if you don’t follow instructions.
You CAN be injured if you don’t follow instructions.
Additional information as to the nature of the hazard is provided by the following Hazard S y m b o l s
which appear throughout the manual in conjunction with safety message alert symbols.
Hazard Symbols
Never touch electrical wires or components while the motor is running. Exposed, frayed or worn electrical motor and/or water
pump wiring can be sources of electrical shock which could cause severe injury or burns.
Electrical Shock!
Accidental Starts!
Before plugging the equipment into an electrical outlet, ensure that the ON/OFF switch is in the “OFF” position to prevent
accidental starting. Unplug unit before performing any service operation.
R o t ating or Moving Pa r t s !
Keep hands, feet, hair, and clothing away from all moving parts to prevent injury. Never operate the motor with covers, shrouds,
or guards removed.
Damage prevention messages
Other important messages that are designed to help prevent damage to your MK Diamond 470 tile saw, other property, or the
environment are preceded by the word, “notice.”
n o t i c e
Your MK-470 Tile Saw or other pro p e rty could be damaged if you don’t follow instru c t i o n s .
California Proposition 65 Message
Warning
suitable to the material being saws or drilled. In accordance with OSHA (29 CFR Part 1910.1200). Diamond Blades improperly
used are dangerous. Comply with American National Standards Institute Safety Code B7.1 and Occupational Safety and Health
Act covering: Speed, Safety Guards, Flanges, Mounting Procedures, General Operating Rules, Handling, Storage and General
Machine Conditions.
Safety Label Locations
Safety labels are located according to the drawing below. The labels contain important safety information. Please read them
carefully. These labels are considered a permanent part of your saw. If a label comes off or becomes hard to read, contact MK
Diamond or your dealer for replacement.
Sawing and drilling generates dust. Excessive airborne particles may cause irritation to eyes, skin
and respiratory tract. To avoid breathing impairment always employ dust controls and protection
Item Location Description Part #
H2 Motor GFCI Warning label 155678
H3 Motor Receptacle warning label 154822
J3 Motor General safety warnings 155806
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470 TILE SAW
7 inch (178mm) blade capacity
The MK-470 Tile Saw is a versatile cutting machine designed to use diamond blades. Its function is to cut a
variety of materials to include ceramics and certain types of stone. The MK-470 is compact and lightweight,
and incorporates features found on larger professional models. This saw is engineered as a self-contained
unit consisting of a powerful universal motor, removable water reservoir and water recirculating system, and
quality diamond blade. The motor operates on standard 120V current, and the water pump is conveniently
energized by the motor.
Motor
The MK-470 features a powerful right angle drive universal motor with the following specifications:
The heavy-duty pinion shaft and gear assembly are permanently lubricated and sealed within the gear box.
Cutting Head
The 7 inch (178mm) blade capacity yields a depth of cut of 1-3/4". The hinged blade guard allows easy blade changes.
115V 50/60Hz 1/2 Horsepower
5.3 AMP 5,500 RPM
Maintenance free sealed pinion shaft and gear assembly
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Table
Built of rugged composite material, the one-piece table allows for the cutting of 14” (355mm) tile and diagonally cuts 10" (254mm).
Frame
The structural steel frame of the MK-470 provides high strength and rigidity, while keeping weight to a minimum. The MK-470 is very portable at
29 pounds and an overall size of 28”L x 21”W x 25”H.
Water System
The water system of the MK-470 consists of a thermoplastic water reservoir and a submersible recirculating pump that connects to water tubes
in the blade guard in order to provide a continuous supply of water to both sides of the blade. The water reservoir will not rust or peel and is easy
to clean.
Unpacking and Preparation
Carefully open carton. Remove the accessory pack. Lift the saw out of the carton by the pan, and place onto a level work surface.
Open the accessory pack, and check each item with the contents list and illustration below, making certain that all items are
accounted for and in good condition before discarding any packing material. If there are any missing or damaged parts, call our
toll free number 1-(800)-421-5830 or (310) 539-5221 for instructions before proceeding with the assembly.
Contents of carton: Saw Frame Assembly and Accessory Pack
Accessory Pack contains:
Initial A s s e m b l y
Do not operate saw until fully assembled.
Installing the Cutting Head
Remove the three screws (part# G4) from the mounting flange of the frame assembly and set them aside. From the Cutting Head,
loosen the davies knob (part# B3) and remove the wing nut (part# B5) on the blade guard. Remove the blade guard and set it
aside. With the Cutting Head, align the three screw holes of it”s casting (part# G1) with the mounting screws through the casting
into the saw frame and retighten. Reinstall the blade guard and connect the vinyl water hose to the brass fitting located on the
blade guard.
Installing the Blade
Warning
owners
manual
Loosen the davies knob (part# B3) and wing nut (part# B5) on the blade guard. Raise the
blade guard to its highest position and retighten the wing nut. Loosen and remove the
blade shaft nut (part# H6) & outside blade flanges (part# H5) and set them aside. Place
the diamond blade onto the motor shaft against the inside flange. Ensure that the rotation
arrow (stamped onto the steel core of the blade) points “counter-clockwise” when viewed
from the blade side of the saw. Place the outer blade flange against the blade and tighten
the blade shaft nut onto the threaded shaft. DO NOT OVERTIGHTEN. Reposition the blade
guard and tighten fittings. Attach splash guard to back of blade guard with wingscrew and
washer provided.
pump
manual
warranty
card
splash
guard
wing screw
7" tile blade
washer
cutting head
fenceblade nut wrench blade shaft wrench
water pump
Installing the Water Pump
The end of the water hose (lying in the water pan) has a 3/8” diameter vinyl sleeve attached. Affix this 3/8” sleeve onto the
spout of the water pump, using the plastic adapter provided. Place the pump anywhere in the water pan. Route the water
pump power cord through the slot in the side of the table as shown. Fill the pan with clean water, and ensure that the water
level is above the intake port of the pump. It is very important to keep the pump’s intake port under water during operations.
Any air introduced to the pump could cause an interruption of water flow. This pump is fully submersible, and you may wish
to place it adjacent to your saw in a bucket of water to provide a continuous flow of clean water to your blade (this helps
extend the life of both blade and pump). Connect the plug end of the water pump into the water pump receptacle located on
the motor. The pump is activated by the ON/Off switch on the electric motor.
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