MasterCraft 054-1237-4 Owner's Manual

Page 1

Owner’s Manual

Multi-Cutter Precision Saw 054-1237-4

CAUTION: Before using this multi-cutter precision saw or any of its accessories, carefully read this manual and follow all Safety Rules and Operating Instructions.

 General Safety Rules  Specific Safety Rules

and Symbols

 Functional Description  Assembly  Operation  Maintenance  Accessories

Imported by Mastercraft Canada Toronto, Canada M4S 2B8

Rev 1.7 03/12/2010

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SECTION

PAGE SECTION

PAGE

Warranty ….……………………….

Know your multi-cutter …...…..

Product specifications …………...

Tote contents ………..………...

11–12

Power tool safety …………………

3–5

Assembly & operation ..………

13–18

Specific safety rules ……………..

6–8

Maintenance …….……………..

Extension cords ………………….

8–9

Parts & service ..……..………..

20–22

Symbols …………………………..

WARRANTY

TABLE OF CONTENTS

Limited 3-year Replacement Warranty

This Mastercraft product carries a three (3) year replacement warranty against defects in workmanship and materials. Mastercraft Canada agrees to replace the defective product free of charge with the same model or one of equal value or specification, within the stated warranty period, when returned by the original purchaser with proof of purchase. This product is not guaranteed against wear or breakage due to misuse and/or abuse.

This product is not guaranteed if used for industrial or commercial purposes.

Mastercraft is a superior line of products selected for their workmanship and materials. These products are designed to meet rigorous quality and performance standards, and are approved by our Quality Assurance laboratory.

TOLL FREE HELPLINE: 1-800-689-9928

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WARNING: To avoid electrical hazards, fire hazards, or damage to the multi- cutter precision saw, use proper circuit protection.

This multi-cutter precision saw is wired at the factory for 120 V operation. It must be connected to a 120 V 15 A time delayed fuse or circuit breaker. To avoid shock or fire, replace the power cord immediately if it is worn, cut or damaged in any way.

PRODUCT SPECIFICATIONS

Rating ………………………………..

120 V, 60 Hz, AC

Amperes …………………………….

4.0 Amperes

Speed ……………………………….

4000 RPM (no load)

Blade diameter ……………………..

85 mm (3 3/8”)

Arbor …………………………………

10 mm

Depth of cut …………………………

0–26.9 mm (0–11/16”)

Edge guide ………………………….

170 mm (6 ¾”)

WARNING: Dust created by power sanding, sawing, grinding, drilling and

other construction activities may contain chemicals that are known to cause cancer, birth defects or other genetic abnormalities. These chemicals include:

 Lead from lead-based paints  Crystalline silica from bricks, cement and other masonry products  Arsenic and chromium from chemically-treated lumber

Your level of risk from exposure to these chemicals will vary, according to how often you do this type of work. To reduce your exposure to these chemicals, work in a well-ventilated area and use approved safety equipment such as dust masks that are specially designed to filter out microscopic particles.

POWER TOOL SAFETY

Always wear eye protection. Any power tool can throw foreign objects into your eyes, which could cause permanent eye damage. ALWAYS wear safety goggles (not glasses) that comply with ANSI safety standard Z87.1. Everyday glasses only have impact resistant lenses. They ARE NOT safety glasses.

WARNING: Glasses or goggles that do not comply with ANSI Z87.1 could cause serious injury if they break.

SAVE THESE INSTRUCTIONS FOR REFERENCE

DANGER: The laser light beam that is projected from the front of the laser

level can be dangerous to eyesight. Never allow anyone to stare directly into the light. Staring directly into the light beam may result in serious eye damage.

Page 4

GENERAL SAFETY RULES

WARNING: Read and understand

all instructions. Failure to follow all of the instructions listed below may result in electric shock, fire and/or serious personal injury.

WORK AREA Keep your work area clean and well-lit.

Cluttered benches and dark areas invite accidents.

Do not operate power tools in a potentially explosive environment, such as in the presence of flammable liquids, gases or dust. Power tools create sparks,

which may ignite the dust or fumes.

Keep bystanders, children and visitors away while operating a power tool.

Distractions can cause you to lose control.

ELECTRICAL SAFETY Double insulated tools are equipped

with a polarized plug (one blade is wider than the other). This plug will fit into a polarized outlet only one way. If the plug does not fit into the outlet, reverse the plug. If it still does not fit, contact a qualified electrician to install a polarized outlet. Do not alter the plug in any way.

Double insulation eliminates the need for the three-prong grounded power cord and grounded power supply system.

Avoid contact between your body and grounded surfaces such as pipes, radiators, ranges and refrigerators. There

is an increased risk of electric shock if your body is grounded.

Do not expose power tools to rain or wet conditions. Water entering the power

tool will increase the risk of electric shock. Do not abuse the cord. Never use the

cord to carry the tool or to pull the plug out of an outlet. Keep the cord away from heat, oil, sharp edges, and moving parts. Replace damaged cords immediately. Damaged cords increase the risk of electric shock.

When operating a power tool outdoors, use an outdoor extension cord marked

“W-A” or “W”. These cords are rated for outdoor use and reduce the risk of electric shock.

PERSONAL SAFETY Stay alert, watch what you are doing

and use common sense when operating a power tool. Do not use the tool when tired or under the influence of drugs, alcohol, or medication. A moment of

inattention while operating a power tool could result in serious personal injury.

Dress properly. Do not wear loose clothing or jewellery.

Contain long hair. Keep your hair, clothing and gloves away from moving parts. Loose clothing, jewellery or long hair

can be caught in moving parts.

Avoid accidental starting. Verify that the switch is in the OFF position before plugging the tool in. Carrying tools with

your finger on the switch or plugging in tools that have the switch in the ON position invites accidents.

SAVE THESE INSTRUCTIONS FOR REFERENCE

POWER TOOL SAFETY

Page 5

POWER TOOL SAFETY

PERSONAL SAFETY – cont’d Remove adjusting keys or wrenches

before turning the tool ON. A wrench or

key that is left attached to a rotating part of the tool could result in personal injury.

Do not overreach. Keep proper footing and balance at all times. Proper footing

and balance allows for better control of the tool in unexpected situations.

Use safety equipment. Always wear eye protection. A dust mask, non-skid safety

shoes, a hardhat or hearing protection must be used for appropriate conditions.

TOOL USE AND CARE Use clamps or another practical means

to secure and support the workpiece to a stable platform. Holding the work in your

hand or against your body is not stable and may lead to loss of control.

Do not force the tool. Use the correct tool for your application. The correct tool

will do the job better and safer at the speed that it was designed to work at.

Do not use the tool if it cannot be turned ON or OFF by the power switch. Any tool

that cannot be controlled using the switch is dangerous and must be repaired.

Disconnect the plug from the power source before making any adjustments, changing accessories or storing the tool. Such preventive safety measures

reduce the risk of starting the tool accidentally.

When not in use, store tools out of reach of children and other untrained persons. Tools are dangerous in the hands of untrained users.

Maintain tools with care. Keep cutting tools sharp and clean. Properly

maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.

Check for misalignment or binding of moving parts, broken parts and any other condition that may affect the operation of the tool. If it is damaged, have the tool serviced before using.

Many accidents are caused by poorly maintained tools.

Use only accessories that are recommended for your model by the manufacturer. Accessories that may be

suitable for one tool may become hazardous when used on another tool.

SERVICE Tools must be serviced by qualified

personnel only. Service or maintenance

performed by unqualified personnel could result in a risk of injury.

When servicing a tool, use only identical replacement parts. Follow instructions in the Maintenance section of this manual. Use of unauthorized parts or

failure to follow Maintenance instructions may result in a risk of electric shock or injury.

SAVE THESE INSTRUCTIONS FOR REFERENCE

Page 6

WARNING: Know your multi- cutter. Do not plug the tool into the power source until you have read and understand this Instruction Manual. Learn the tool’s applications and limitations, as well as the specific potential hazards related to this tool.

Following this rule will reduce the risk of electric shock, fire, or serious injury.

Always wear eye protection. Any power tool can throw foreign objects into your eyes

and cause permanent eye damage. ALWAYS wear safety goggles (not glasses) that comply with ANSI safety standard Z87.1. Everyday glasses have only impact resistant lenses. They ARE NOT safety glasses.

WARNING: Glasses or goggles not in compliance with ANSI Z87.1 could cause serious injury when they break.

Always keep hands out of the path of the saw blade. Avoid awkward hand positions where a sudden slip could cause your hand to move into the path of the saw blade.

DANGER: Keep hands away from cutting area and the blade. Keep your second hand on the tool. If both hands

are holding the saw, they cannot be cut by the blade.

Do not reach underneath the workpiece.

The guard cannot protect you from the blade below the workpiece.

Adjust the cutting depth according to the thickness of the workpiece. Less

than a full tooth of the blade teeth should be visible below the workpiece or approximately 3/8" (10 mm).

Never hold piece being cut in your hands or across your leg. Secure the workpiece to a stable platform. It is

important to support the work properly to minimize body exposure, blade binding, or loss of control.

Hold power tool by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or its own cord. Contact

with a “live” wire will also make exposed metal parts of the power tool “live” and shock the operator.

When ripping always use a straight edge guide. This improves the accuracy of

cut and reduces the chance of the blade binding.

Always use blades with correct size and shape (diamond versus round) of arbour holes. Blades that do not match the

mounting hardware of the saw will run eccentrically, causing loss of control.

Never use damaged or incorrect blade washers or bolt. The blade washers and

bolt were specially designed for your saw, for optimum performance and safety of operation.

CAUSES AND OPERATOR PREVENTION OF KICKBACK

Kickback is a sudden reaction to a pinched, bound or misaligned saw blade, causing an uncontrolled saw to lift up and out of the workpiece toward the operator;

When the blade is pinched or bound tightly by the kerf closing down, the blade stalls and the motor reaction drives the unit rapidly back toward the operator;

! ! !

SPECIFIC SAFETY RULES

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CAUSES AND OPERATOR PREVENTION OF KICKBACK – cont’d

If the blade becomes twisted or misaligned in the cut, the teeth at the back edge of the blade can dig into the top surface of the wood causing the blade to climb out of the kerf and jump back toward the operator. Kickback is the result of saw misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below:

Maintain a firm grip with both hands on the saw and position your arms to resist kickback forces. Position your body to the left or right side of the blade, but not in line with the blade. Kickback could

cause the saw to jump backwards, but kickback forces can be controlled by the operator, if proper precautions are taken.

When the blade is binding, or when interrupting a cut for any reason, release the trigger and hold the saw motionless in the material until the blade comes to a complete stop. Never attempt to remove the saw from the work or pull the saw backward while the blade is in motion or kickback may occur. Investigate and take corrective

actions to eliminate the cause of blade binding.

When restarting a saw in the workpiece, centre the saw blade in the kerf and check that saw teeth are not engaged into the material. If the saw blades are

binding, it may walk up or kickback from the workpiece as the saw is restarted.

Support large panels to minimize the risk of blade pinching and kickback.

Large panels tend to sag under their own weight. Supports must be placed under the panel on both sides, near the line of cut and near the edge of the panel.

Do not use dull or damaged blades.

Unsharpened or improperly set blades produce narrow kerf causing excessive friction, blade binding and kickback.

ADDITIONAL SPECIFIC SAFETY RULES Use extra caution when making a

“plunge cut” into existing walls or other blind areas. The protruding blade may cut

objects that can cause kickback.

Check the lower guard for proper closing before each use. Do not operate the saw if the lower guard does not move freely and close instantly. Never clamp or tie the lower guard into the open position. If the saw is accidentally

dropped, the lower guard may be damaged. Raise the lower guard with the retracting handle and make sure it moves freely and does not touch the blade or any other part in all depths of cuts.

Check the operation of the lower guard spring. If the guard and the spring are not operating properly, they must be serviced before use. The lower guard

may operate sluggishly due to damaged parts, gummy deposits, or a build-up of debris.

SPECIFIC SAFETY RULES

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EXTENSION CORDS

ADDITIONAL SPECIFIC SAFETY RULES – cont’d

The lower guard should be retracted manually only for special cuts such as “plunge cuts” and “compound cuts” Raise lower guard by retracting handle and as soon as the blade enters the material, the lower guard must be released. For all other sawing, the lower

guard should operate automatically.

Always observe that the lower guard is covering the blade before placing saw down on the bench or on the floor. An

unprotected, coasting blade will cause the saw to walk backwards, cutting whatever is in its path. Be aware of the time it takes for the blade to stop after the switch is released.

Never operate the saw while it is being carried to another location. The blade guard may be open and potentially cause serious injury.

If the switch fails to turn the saw ON or OFF properly, stop using it immediately and have the saw switch repaired.

Always allow the saw to reach full speed before beginning the cut.

Never use the side of the blade for cutting. When making horizontal cuts, make sure the weight of the tool is not forcing the side of the blade to do the cutting. This will reduce the risk of kickback.

Make sure there are no nails or foreign objects in the area of the workpiece to be cut.

DANGER: The laser light beam that is projected from the front of the laser level can be dangerous to eyesight. Never allow anyone to stare directly into the light. Staring directly into the light beam may result in serious eye damage.

DANGER: Never use the laser level in the presence of small children. Small

children may stare directly into the laser light beam causing serious eye injury.

WARNING: Keep the extension cord clear of the working area. Position

the cord so that it will not get caught on the workpiece, tools or any other obstructions while you are working with the power tool.

Make sure any extension cord that is used with this tool is in good condition.

When using an extension cord, be sure to use one that is heavy enough to carry the current that the tool will draw. An undersized cord will cause a drop in line voltage which will result in loss of power and overheating.

The table on the following page shows the correct size to be used according to cord length and nameplate ampere rating. When in doubt, use the next heavier gauge. The smaller the gauge number the heavier the cord.

SPECIFIC SAFETY RULES

! ! !

Page 9

EXTENSION CORD

SAFETY

SYMBOLS

Be sure your extension cord is properly wired and in good condition. Always

replace a damaged extension cord or have it repaired by a qualified electrician before using it. Protect your extension cord from sharp objects, excessive heat and damp or wet areas.

Use a separate electrical circuit for your power tools. This circuit must consist of

not less than 14 gauge wire and should be protected with either a 15 A time delayed fuse or a circuit breaker. Before connecting the power tool to the power source, make sure the switch is in the OFF position and the power source is the same as indicated on the nameplate. Running at lower voltage will damage the motor.

Volts

Amperes

Hertz

Watts

Kilowatts

Microfarads

Litres

Kilograms

Hours

N/cm2

Newtons per square centimetre

Pascals

Min

Minutes

Seconds

Alternating current

Three-phase alternating current

Three-phase alternating current with neutral

Direct current

No load speed

Alternating or direct current

Class II construction

Splash proof construction

Watertight construction

Protective grounding at grounding terminal, Class I tools

Revolutions or reciprocations per minute

Diameter

Off position

Arrow

Warning symbol

WARNING: Some of the following

symbols may appear on your tool. Please study them and learn their meanings. Proper interpretation of these symbols will allow you to operate the tool better and safer.

MINIMUM GAUGE (AWG)

EXTENSION CORDS (120 V use only)

Amperage

rating Total length

than

Not

than

25'

(7.5 m)

50'

(15 m)

100'

(30 m)

150'

(45 m)

0 6 18

14 6 10

Not Applicable

3042597

LISTED

This symbol designates that this tool is listed with Canadian requirements by ETL Testing Laboratories, Inc. Conforms to UL Std. 745-1, 745-2-5. Certified to CAN/CSA Std. C22.2 No. 745-1, 745-2-5.

JD3521U

Page 10

KNOW YOUR MULTI-CUTTER

Motor vents

Power ON

light

Cutting

depth knob

Blade guard

Cut line indicator

Spindle lock

button

Handle grip

Blade guard

fulcrum

ON/OFF

switch

Dust port

Edge guide

mount

Blade guard

release

Edge guide

locking knobs

Edge guide

Vacuum

hose

adaptor

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WARNING: If any part is missing or damaged, do not plug the tool into the power source until the missing or damaged part is replaced.

Carefully unpack the multi-cutter. Compare

against the “MULTI-CUTTER COMPONENTS” chart at right.

NOTE: See product diagram on Page 10. WARNING: To avoid fire or toxic

reaction, never use gasoline, naphtha, acetone, lacquer thinner or similar highly volatile solvents to clean the tool.

CONTENTS

MULTI-CUTTER COMPONENTS

KEY

DESCRIPTION

QTY

Multi-cutter assembly w/edge guide mount

Vacuum hose adaptor

Corundum blade - #54-1077-4

Carbide tipped blades

● 24 teeth - #54-1072-4

● 36 teeth - #54-1074-0

1 1 E Super cut blade – 80T

#54-1071-6

Segmented diamond wheel – #54-1075-8

Edge guide

5 MM Hex key

Tote bag (not illustrated)

Owner’s manual

Page 12

CONTENTS

Page 13

This multi-cutter precision saw is a versatile tool that is designed for use in confined work spaces. By selecting the appropriate cutting blades, it will cut copper and aluminum tubing, ceramic and marble tile, and assorted wood products. The following assembly and operating instructions will explain the tool and its operation in detail.

INSTALL VACUUM ADAPTOR

The vacuum adaptor can be used to attach a workshop vacuum hose to the tool. This will prevent most cutting dust from escaping into the work area.

1. Line up the tabs on the small end of

the vacuum adaptor (1) with the matching slots (2) in the vacuum port (3) in the rear of the tool (see Fig. 1).

2. Push the vacuum adaptor into the

vacuum port as far as it will go.

3. Twist the vacuum adaptor clockwise to

lock it into position.

SECURE CORD TO VACUUM HOSE

Slide the hook and loop strap (1) down the power cord (2) and wrap it around the vacuum hose (3) (see Fig. 2).

REMOVE BLADE GUARD

1. Insert 5 mm hex key (1) into the blade guard fulcrum nut (2) (see Fig. 3).

2. Turn hex key counter clockwise to remove the blade guard fulcrum nut.

3. Slide blade guard fulcrum bolt (3) out of the blade guard (4).

4. Carefully slide the blade guard off the tool.

REMOVE BLADE

WARNING: Always unplug the tool

from the power source before making any adjustments or changing the blade.

WARNING: Always be extremely

careful when handling blades. They will be extremely hot immediately after use. They are also very sharp and may cause serious injury.

1. Insert the 5 mm hex key (1) into the arbor screw (2) on the LEFT side of the tool (see Fig. 4).

ASSEMBLY AND OPERATION – MULTI-CUTTER

Fig. 3

Fig. 2

Fig. 1

Page 14

REMOVE BLADE – cont’d

2. Press inward on the spindle lock button (3) which is located on the RIGHT side of the tool.

3. Rotate the hex key CLOCKWISE while pressing on the spindle lock button until the spindle lock button engages the spindle.

4. Continue to rotate the arbor screw in a CLOCKWISE direction until the arbor screw is removed and the thick arbor washer (4) can be pulled off the arbor. NOTE: The arbor screw has a left hand thread. It must be turned CLOCKWISE to be removed.

5. Remove the blade (5).

SELECT THE CORRECT BLADE Before installing a blade into the tool, it is

important to select the correct blade for the type of material being cut.

WARNING: Using the incorrect

blade type can result in damage to the blade and possible injury to the operator.

Blade

Profile

Description

Reinforced cutting disc

85 mm x 1.4 mm corundum compound. Cuts non-ferrous metal, plastic & wood

Carbide tipped blade

85 mm x 1.7 mm x 24 teeth 85 mm x 1.7 mm x 36 teeth Cuts aluminum, hardwood, laminates, plastics

HSS Super cut blade

85 mm x 1.0 mm x 80 teeth Cuts hardwood, soft wood & plastics

Segmented diamond blade

85 mm x 1.8 mm Cuts ceramic and marble tile, circuit boards & fiberglass reinforced plastics

INSTALL BLADE

WARNING: Let hot hex nut cool

before attempting to change the blade.

1. Remove existing blade (if one is installed), arbor screw and thick arbor washer as noted above.

2. Slide blade (5) into the tool so the hole in the blade (6) slides over the arbor (see Fig. 5). NOTE: Make sure the exposed teeth of a blade with teeth are pointing forward.

3. Re-install thick arbor washer and arbor screw in the reverse order in which they were removed.

ASSEMBLY AND OPERATION – MULTI-CUTTER

Fig. 4

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INSTALL BLADE – cont’d

4. Lock spindle using the spindle lock button and tighten the arbor screw by turning it COUNTER CLOCKWISE. NOTE: The arbor screw has a left hand thread. It must be turned COUNTER CLOCKWISE to be tightened.

5. Re-install blade guard in the reverse order in which it were removed. NOTE: At this point you must decide whether to install the universal blade guard or the pipe cutting blade guard.

ADJUST CUTTING DEPTH The cutting depth is controlled by limiting

the amount of blade exposed below the blade guard.

1. Loosen the depth control knob (1) by turning it counter clockwise (see Fig 6).

2. Slide it upward toward the handle (2) and tighten the knob to hold the depth stop mechanism in place.

3. Press the blade guard lock button (3) and carefully pivot the blade guard (4) upward to expose the amount of blade (5) to achieve the desired depth of cut.

ADJUST CUTTING DEPTH – cont’d NOTES:

a) The measurement markings on side of the blade guard (6) can be used as a guide in setting the depth of cut. The measurement mark on the guard that intersects with the edge of the blade indicates roughly the depth of cut.

b) Always set the cutting depth 1/8” greater

than the thickness of the workpiece. c) Always test the depth setting on a scrap workpiece to verify the setting before cutting into the good workpiece.

INSTALL EDGE GUIDE MOUNT

1. Insert the edge guide dovetail (1) into the matching slot (2) in the front of the blade guard (see Fig 7a).

2. Slide the edge guide mount toward the right hand side of the blade guard until the mounting screw (3) lines up with the matching threaded hole (4) in the blade guard.

3. Carefully turn the mounting screw clockwise into the threaded hole until it holds the edge guide firmly in place.

Fig. 6

ASSEMBLY AND OPERATION – MULTI-CUTTER

Fig. 5

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INSTALL EDGE GUIDE MOUNT – cont’d

4. Tighten the mounting screw using a 5 mm hex key. NOTE: Do not over tighten the mounting screw. You will break the blade guard.

INSTALL EDGE GUIDE

The multi-cutter can be used with an edge guide for ripping materials up to 6” wide.

1. Turn two edge guide locking screws (1) counter clockwise a few turns until the screws rise about 1/8” (see Fig. 7b).

2. Insert edge guard rod (2) into the edge guide mounting block slot (3).

3. Slide edge guard toward the tool until the desired width of cut is indicated on the scale (4) where it meets the edge of the edge guide mounting block.

4. Tighten both edge guide locking screws. NOTES: a) Do not over tighten the edge guide locking screws or you will break the edge guide mounting block. b) The edge guide scale is only an approximate measurement. Always check the width of cut on a scrap workpiece.

Fig. 7b

ASSEMBLY AND OPERATION – MULTI-CUTTER

Have you read “POWER TOOL SAFETY”, “SPECIFIC SAFETY RULES”, EXTENSION CORD SAFETY” and “SYMBOLS” on pages

3, 4, 5, 6 & 7 of this Manual? If not, please do it now before you operate this multi-cutter. Your safety depends on it!

Every time you use the multi-cutter you should verify the following:

1. Correct blade is installed for the material being cut.

2. Blade is in good condition and properly installed.

3. Blade guard is in place and in good working order.

4. Workpiece is properly secured.

5. Safety glasses are being worn.

Failure to adhere to these safety rules can greatly increase the chances of injury.

WARNING

Fig. 7a

Page 17

ON/OFF SWITCH

This tool has dual purpose ON/OFF switch that is designed to prevent accidental starting of the tool. It also automatically turns the tool OFF then the switch is not held in the ON position.

1. Press the center of the switch (1) inward (see Fig. 8).

2. While holding the center of the switch inward, slide the switch button (2) forward until the tool starts.

3. To stop the tool, release the switch button. It will automatically turn the tool OFF.

CUTTING (without edge guide) WARNING: Always use two hands

on the tool when cutting. This will make operation of the tool easier and promote maximum safety.

1. Install appropriate cutting blade in the tool.

2. Adjust cutting depth as outlined on Page 13.

3. Plug the tool cord into the power source. NOTE: The green “power on” light (1) on the right hand side of the tool will

illuminate when power is “live” (see

Fig. 9).

4. Place leading edge of the blade guard (2) on the workpiece to be cut (see Fig. 10).

5. Grasp the tool with two hands. Place your right hand on the body of the tool (3) being careful not to cover the motor vents (4). Place your left hand on the forward part of the tool (5) so your thumb can operate the blade guard release button (6).

6. Line up front cut line indicator (7) with the cutting line marked on the workpiece (8). NOTE: Do not place the blade guard too far forward on the workpiece. This is important to avoid the blade touching the workpiece when the blade guard is raised to expose the blade as outlined in instruction # 8.

ASSEMBLY AND OPERATION – MULTI-CUTTER

Fig. 8

Fig. 9

Page 18

CUTTING (without edge guide) – cont’d

7. Turn switch ON as outlined on Page

15. NOTE: Do not proceed any further until the blade is running at full speed.

8. Using the thumb on your left hand, press the blade guard release button (6).

9. Gently press downward on the front of the tool to raise the blade guard until it touches the depth control stop (9).

10. Re-check the alignment of the front cut line indicator (7) and the cutting line marked on the workpiece (8).

11. Slowly move the tool forward until the blade touches the workpiece and begins to cut at the cutting line. NOTE: Feed the blade into the workpiece at a slow steady pace. Do not force the tool so the motor slows

down. The red “overload” light (10) will

illuminate if the motor is being overloaded. The blade will cut faster and cleaner when turning at full speed.

WARNING: Never try to cut a curve.

This tool is designed only for straight line cuts. Attempting to cut curves will damage the blade, make rough cuts and possible break the blade. Serious injury may result.

When the cut is completed, release the ON/OFF switch and wait for the blade to come to a complete stop before removing the tool from the workpiece.

WARNING: Make sure the blade

guard returns to its normal position covering the blade before taking your hands off the tool.

CUTTING (with edge guide)

To cut using the edge guide, follow the same basic principles as noted in Paragraphs 1 through 11 above. Instead of following a cutting line, you will simply set the edge guide at the appropriate width and hold the guide shoe (1) against the edge of the workpiece (2) to guide the blade in a straight line (see Fig. 11).

ASSEMBLY AND OPERATION – MULTI-CUTTER

Illustration

● “Power on” light

Fig. 10

Fig. 11

Page 19

GENERAL

WARNING: When servicing, use

only identical replacement parts. The use of any other part may create a hazard or cause damage to the product.

DO NOT use solvents when cleaning plastic parts. Plastics are susceptible to damage from various types of commercial solvents and may be damaged by their use. Use a clean cloth to remove dirt, dust, oil, grease etc.

WARNING: Never allow brake

fluids, gasoline, petroleum-based products, penetrating oils, etc. to come into contact with plastic parts. They contain chemicals that can damage, weaken or destroy plastic.

DO NOT abuse power tools. Abusive practices can damage the tool and the workpiece.

WARNING: DO NOT attempt to

modify tools or to create accessories. Any such alteration or modification is considered to be misuse and could result in a hazardous condition leading to possible serious injury. It will also void the warranty.

LUBRICATION

All of the bearings in this tool are lubricated with a sufficient amount of high-grade lubricant for the life of the unit under normal conditions. Therefore, no further lubrication is required.

MAINTENANCE

! ! !

Page 20

PARTS DIAGRAM – MODEL 054-1237-4

68 69

Page 21

WARNING: When servicing, use only Mastercraft® replacement parts. Use of

any other parts may create a safety hazard or cause damage to the tool. Any attempt to repair or replace electrical parts on this power tool may create a

safety hazard unless repair is performed by a qualified technician.

Always order by PART NUMBER, not by key number.

Key #

Part #

Part Name

Quantity

155510

Locking button

240832

Spring

241592

Spring 1 4

317044

Unit switch

2 5 300100

Enclosure

1 6 312816

Locking button

215129

Locking pin

500000

Tapping screw

2 9 242567

Leaf spring of guard

152516

Adjusting button

224476

Clamping clamp

500810

Screw M4x10

155511

Shaft locking button

240303

Conical spiral spring

511004

Closing ring 4

236038

Bottom worm gear case

520007

Bearing 606-2RS

511007

Closing ring 9

200304

Gear

214914

Worm 1 21

520007

Bearing 606-2RS

511006

Closing ring 7

520013

Bearing 606-2RS

200901

Worm wheel

520017

Bearing 608-2RS

236039

Top worm gear case

225346

Inner guard

500816

Screw M4x25

513002

Woodruff key

213745

Worm wheel shaft

PARTS LIST – MODEL 054-1237-4

Page 22

Key #

Part #

Part Name

Quantity

224478

Blade clamping plate

215130

Blade retaining screw

520022

Bearing 609-2RS

312161

Transparent cover

500000

Tapping screw

100101

Rotor

314509

Carbon brush cap

162428

Carbon brush

222828

Brush holder

502001

Nut M4

311694

Slide-arrow

163709

Switch

215125

Switch pin

312160

Transparent cover

314528

Carbon brush stand

520012

Bearing 607-2RS

110101

Stator

162871

PCB

500000

Tapping screw

500201

Tapping screw

315000

Cord clamp

322020

Cord sleeve

160212

Plug & cord

300100

Enclosure

500200

Tapping screw

502000

Nut M6

204011

Side screw

312162

Guard

217010

Torsion spring shaft

241017

Torsion spring

155512

Fixing screw

146526

Edge guide mount

153519

Pipe cutting attachment

661013

Edge guide

54-1077-4

Corundum blade

54-1072-4

Carbide tipped blade – 24 teeth

54-1074-0

Carbide tipped blade – 36 teeth

54-1071-6

Super cut blade

54-1075-8

Segmented diamond blade

PARTS LIST – MODEL 054-1237-4