Porter-Cable 745, 746, 748 User Manual

Instruction

manual

MODEL 748 with

Dual Cutting Action,

Keyless Quik-Change™

Blade Clamp,

Keyless Quik-Change™

Guide Shoe

MODEL 746 with

Keyless Quik-Change™

Blade Clamp,

Keyless Quik-Change™

Guide Shoe

MODEL 745

ESPAÑOL: PÁGINA 19 FRANÇAISE : PAGE 35

Double Insulated Variable Speed TIGER SAW® All-Purpose Saws

To learn more about Porter-Cable

visit our website at:

http://www.porter-cable.com

IMPORTANT

Please make certain that the person who is to use this equipment carefully reads and understands these instructions before starting operations.

The Model and Serial No. plate is located on the main housing of the tool. Record these numbers in the spaces below and retain for future reference.

Model No. ______________________________________

Type ___________________________________________

Serial No. ______________________________________

Part No. 638516-00 - 11-04-05

TABLE OF CONTENTS

IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

SAFETY GUIDELINES - DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

GENERAL SAFETY RULES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

ADDITIONAL SPECIFIC SAFETY RULES . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

CARTON CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

MAINTENANCE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

WARRANTY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

IMPORTANT SAFETY INSTRUCTIONS

using any tool or equipment. Always follow basic safety precautions to reduce the risk of personal injury. Improper operation, maintenance, or modification of tools or equipment could result in serious injury and property damage. These tools and equipment are designed for certain applications. DO NOT modify this product and/or use it for any application other than for which it was designed.

If you have any questions relative to its application, DO NOT use the product until you have written Porter-Cable and we have advised you.

INFORMATION REGARDING SAFE AND PROPER OPERATION IS AVAILABLE FROM:

Read and understand all warnings and operating instructions before

Online, contact us at: www.porter-cable.com

By mail, contact us at:

The Power Tool Institute

1300 Sumner Avenue, Cleveland, OH 44115-2851

www.powertoolinstitute.org

National Safety Council

1121 Spring Lake Drive

Itasca, IL 60143-3201

American National Standards Institute

25 West 43rd Street, 4 floor

New York, NY 10036 www.ansi.org

ANSI 01.1Safety Requirements for Woodworking Machines

The U.S. Department of Labor regulations

Technical Service Manager Porter-Cable 4825 Highway 45 North Jackson, TN 38305

www.osha.gov

SAVE THESE INSTRUCTIONS!

SAFETY GUIDELINES - DEFINITIONS

It is important for you to read and understand this manual. The information it contains relates to protecting YOUR SAFETY and PREVENTING PROBLEMS. The symbols below are used to help you recognize this information.

avoided, will result in death or serious injury.

indicates an imminently hazardous situation which, if not

avoided,could result in death or serious injury.

indicates a potentially hazardous situation which, if not

indicates a potentially haz ard ous situation which, if not

avoided,may result in minor or mod er ate injury.

used without the safety alert symbol indicates potentially

hazardous situation which, if not avoided, may result in

property damage.

CALIFORNIA PROPOSITION 65

Some dust created by power sanding, sawing, grinding, drilling,

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 and cement and other masonry products

● arsenic and chromium from chemically-treated lumber

Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, al ways wear NIOSH/OSHA approved, properly fit ting face mask or res pi ra tor when us ing such tools.

and other construction activities contains chemicals known (to the

GENERAL SAFETY RULES

instructions listed below may result in electric shock, fire and/or serious injury. The term "power tool" in all of the warnings listed below refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.

SAVE THESE INSTRUCTIONS

1) Work area safety

a) Keep work area clean and well lit. Cluttered or dark areas invite accidents.

b) Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.

c) Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.

2) Electrical safety a) Power tool plugs must match the outlet. Never modify the plug in any

way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric

shock. b) Avoid body contact with earthed or grounded surfaces such as

pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.

c) Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.

d) Do not abuse the cord. Never use the cord for carrying, pulling or

unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk

of electric shock. e) When operating a power tool outdoors, use an extension cord

suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.

3) Personal safety a) Stay alert, watch what you are doing and use common sense when

operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of

inattention while operating power tools may result in serious personal injury.

b) Use safety equipment. Always wear eye protection. Safety equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.

c) Avoid accidental starting. Ensure the switch is in the off-position before plugging in. Carrying power tools with your finger on the switch or plugging in power tools that have the switch on invites accidents.

Read all instructions. Failure to follow all

GENERAL SAFETY RULES

d) Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool

may result in personal injury. e) Do not overreach. Keep proper footing and balance at all times. This

enables better control of the power tool in unexpected situations. f) Dress properly. Do not wear loose clothing or jewelry. Keep your

hair, clothing and gloves away from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts.

g) If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of these devices can reduce dust-related hazards.

4) Power tool use and care a) Do not force the power tool. Use the correct power tool for your

application. The correct power tool will do the job better and safer at the rate for which it was designed.

b) Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.

c) Disconnect the plug from the power source before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.

d) Store idle power tools out of the reach of children and do not allow

persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of

untrained users. e) Maintain power tools. Check for misalignment or binding of moving

parts, breakage of parts and any other condition that may affect the power tools operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power

tools. f) Keep cutting tools sharp and clean. Properly maintained cutting tools

with sharp cutting edges are less likely to bind and are easier to control. g) Use the power tool, accessories and tool bits etc., in accordance

with these instructions and in the manner intended for the particular type of power tool, taking into account the working conditions and the work to be performed. Use of the power tool for

operations different from those intended could result in a hazardous situation.

5) Service a) Have your power tool serviced by a qualified repair person using only

identical replacement parts. This will ensure that the safety of the

power tool is maintained.

continued

ADDITIONAL SPECIFIC SAFETY RULES

1. 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 make exposed metal parts of the

tool "live" and shock the operator.

2. Use clamps or other practical way to secure and support the workpiece

to a stable platform. Holding the work by hand or against your body is

unstable and may lead to loss of control.

3. Keep blades sharp. Sharp blades will do the job better and safer.

4. Keep hands away from cutting area. When sawing never reach

underneath or behind the material being cut for any reason.

5. When you have finished a cut be careful not to come into contact with

the blade. Turn off the motor immediately.

6. Exercise extreme caution when blind cutting. Be certain that there are no

foreign objects such as electrical wire, conduit, plumbing pipes, etc., that may come into contact with the blade.

glasses. Everyday eyeglasses are NOT safety glasses. USE CERTIFIED SAFETY EQUIPMENT. Eye protection equipment should comply with ANSI Z87.1 standards. Hearing equipment should comply with ANSI S3.19 standards.

airborne particles, including wood dust, crystalline silica dust and asbestos dust. Direct particles away from face and body. Always operate

tool in well ventilated area and provide for proper dust removal. Use dust collection system wherever possible. Exposure to the dust 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. Allowing dust to get into your mouth or eyes, or lay on your skin may promote absorption of harmful material. Always use properly fitting NIOSH/OSHA approved respiratory protection appropriate for the dust exposure, and wash exposed areas with soap and water.

Wear eye and hearing protection. Always use safety

Use of this tool can generate and disburse dust or other

SYMBOL DEFINITION

V ....................... volts

A ....................... amperes

Hz ....................... hertz

W ....................... watts

kW ....................... kilowatts

F ....................... farads

µF ....................... microfarads

l ....................... litres

g ....................... grams

kg ....................... kilograms

bar ....................... bars

Pa ....................... pascals

h ....................... hours

min ....................... minutes

s ....................... seconds

....................... no-load speed

…/min or …min

or d.c. ................ direct current

....... Revolutions or reciprocations per minute

2 ....................... two-phase alternating current

2N ....................... two-phase alternating current with neutral

3 ....................... three-phase alternating current

3N ....................... three-phase alternating current with neutral

for the time/current characteristic, as given in IEC 60127

....................... class II tool

or a.c. ................ alternating current

....................... rated current of the appropriate fuse-link in amperes

....................... time-lag miniature fuse-link where X is the symbol

....................... protective earth

IPXX ....................... IP symbol

MOTOR

Many Porter-Cable tools will operate on either D.C., or single phase 25 to 60 cycle A.C. current and voltage within plus or minus 5 percent of that shown on the specification plate on the tool. Several models, however, are designed for A.C. current only. Refer to the specification plate on your tool for proper voltage and current rating.

Do not operate your tool on a current on which the voltage is not within correct limits. Do not operate tools rated A.C. only on D.C. current. To do so may seriously damage the tool.

EXTENSION CORD SELECTION

If an extension cord is used, make sure the conductor size is large enough to prevent excessive voltage drop which will cause loss of power and possible motor damage. A table of recommended extension cord sizes will be found in this section. This table is based on limiting line voltage drop to 5 volts (10 volts for 230 volts) at 150% of rated amperes.

If an extension cord is to be used outdoors, it must be marked with the suffix WA or W following the cord type designation. For example – SJTW-A to indicate it is acceptable for outdoor use.

RECOMMENDED EXTENSION CORD SIZES FOR USE WITH PORTABLE ELECTRIC TOOLS

115V 25 Ft. 50 Ft. 100 Ft. 150 Ft. 200 Ft. 250 Ft. 300 Ft. 400 Ft. 500 Ft. 230V 50 Ft. 100 Ft. 200 Ft. 300 Ft. 400 Ft. 500 Ft. 600 Ft. 800 Ft. 1000 Ft.

0-2 18 18 18 16 16 14 14 12 12 2-3 18 18 16 14 14 12 12 10 10 3-4 18 18 16 14 12 12 10 10 8 4-5 18 18 14 12 12 10 10 8 8 5-6 18 16 14 12 10 10 8 8 6 6-8 18 16 12 10 10 8 6 6 6 8-10 18 14 12 10 8 8 6 6 4 10-12 16 14 10 8 8 6 6 4 4 12-14 16 12 10 8 6 6 6 4 2 14-16 16 12 10 8 6 6 4 4 2

Nameplate Ampere Rating

16-18 14 12 8 8 6 4 4 2 2 18-20 14 12 8 6 6 4 4 2 2

Length of Cord in Feet

FUNCTIONAL DESCRIPTION

FOREWORD

The Porter-Cable TIGER SAW® is designed for cutting wood up to 12" thick, metal up to fiberglass, hard rubber, etc.

/4" thick and various other materials, such as plastics,

CARTON CONTENTS

* TIGER SAW * Blade * 3/16" hex wrench (745 only) * 5/32" hex wrench (745 only)

ASSEMBLY

NOTE: This tool is shipped completely assembled. No assembly time or tools are required.

OPERATION

SELECTING THE BLADE

For best performance, longer blade life, and smoother cut, select the proper blade for the job. A complete line of accessories is available from your Porter-Cable Centers, and Porter-Cable Authorized Service Stations. Please visit our Web Site www.porter-cable.com for a catalog or for the name of your nearest supplier.

When cutting metal always select a blade which will allow at least three teeth to be engaged in the thickness of material.

BLADE CLAMP FEATURES

1. Model 745 is supplied with a standard hex key blade clamp.

2. Models 746 and 748 are supplied with a keyless Quik-Change™ blade clamp.

INSTALLING THE BLADE MODEL 745

•Delta Supplier, Porter-Cable•Delta Factory Service

1. Use hex wrench (supplied with Model 745), to loosen blade clamp screw (A) Fig. 1, by turning counterclockwise three to four turns.

2. Insert the blade into the blade clamp until it bottoms, (A) Fig. 2. When the blade is properly positioned: the hole in the blade shank will align with the hole (B) Fig. 3, in the backside of blade clamp.

3. Firmly tighten clamp screw.

4. To remove blade, loosen blade clamp screw three to four turns and pull blade from clamp.

extremely hot.

Disconnect tool from power source.

Never touch blade immediately after use, as it may be

Fig. 1 Fig. 2

Fig. 3

INSTALLING THE BLADE MODELS 746 and 748

with Keyless Quik-Change™ Blade Clamp

1. The reciprocating shaft must be fully extended to permit access to the Quik-Change™ blade release collar (A) Fig. 4. If necessary, gently squeeze the trigger switch to move the reciprocating shaft to its outermost position (as shown in Fig. 4).

Disconnect tool from power source.

2. Pivot the guide shoe (A) Fig. 6, forward to improve access to the blade clamp (B) Fig. 6.

3. To open the blade clamp: rotate and hold the blade release collar (A) Fig. 7, counterclockwise (as viewed from the front of the saw).

4. Insert the blade into the clamp until it bottoms. Allow the release collar to rotate clockwise to lock the blade in place, (A) Fig. 4.

5. To remove blade: repeat steps 1 through 3, and pull blade from blade clamp (while the release collar is being held in the open position).

hot.

Never touch blade immediately after use, as it may be extremely

NOTES: If the blade clamp collar resists rotation to remove a blade,

work the blade up and down while rotating the clamp (in a counterclockwise direction).

If the blade breaks leaving nothing to grasp (to pull it from the clamp), it may be necessary to use another blade as a tool to aid in removing the broken piece (see Fig. 5). While holding the release collar in the open position, use the tip of another blade to “hook” the broken piece and pull it from the clamp. (A thin, fine-toothed, metalcutting blade works best.)

Periodically clean the blade clamp with dry compressed air. DO NOT lubricate the blade clamp. Lubricant can attract contamination.

Wear ANSI Z87.1 safety glasses while using compressed air.

FLUSH RECESSED

Fig. 4

BREAK BREAK

BROKEN BLADE

Fig. 5

BROKEN BLADE

Fig. 6

Fig. 7

HANDLE FEATURES

1. Model 745 is supplied with a standard handle.

2. Models 746 and 748 are supplied with a soft grip handle.

HOW TO HOLD SAW MODEL 745 and 746

Hold saw as shown in Fig. 8. The gear housing, intermediate plate, blade and pivoting guide shoe may be made live if the blade cuts into live wiring within a wall.

To prevent accidental electrical shock the saw must be held as shown in Fig. 8 and must have the rubber front housing cover properly installed and not damaged.

Fig. 8

TO START AND STOP SAW

1. Make sure power circuit voltage is the same as shown on the specification plate on the saw. Connect saw to power circuit.

2. Hold saw firmly. Squeeze trigger switch (A) Fig. 9, to start motor. Release trigger to stop motor.

VARIABLE SPEED

The saw is equipped with a variable speed control (0 to 2600 SPM). As the switch trigger is squeezed, the speed of the saw blade increases.

The lower speeds are recommended for most metal cutting, while the higher speeds are recommended for wood. A few practice cuts at various speeds (on scrap material), will aid you in choosing the best speed for obtaining the desired results on your application.

DUAL BLADE MOTION (Model 748 only)

The Model 748 has dual blade motion: you have a choice of straight reciprocating motion, as shown in Fig. 10, or orbital motion as shown in Fig. 11. Straight reciprocating motion should be used for all metal cutting operations, and for wood cutting applications where finish is more important than speed. Orbital motion is used for fast cutting of wood.

Fig. 9

To set saw for straight reciprocating motion: rotate knob (A) Fig. 10, clockwise so that the bar is vertical (opposing arrow symbol up), as shown in Fig. 10.

To set saw for orbital motion: rotate knob (A) Fig. 11, counterclockwise so that the bar is horizontal (oval arrow symbol up), as shown in Fig. 11.

ELECTROCUTION RISK. Do not use the tool if knob (A) Fig. 10

& 11 is broken. Exposed metal parts may be made live if the blade cuts into live wiring within a wall.

PIVOTING GUIDE SHOE FEATURES

1. Model 745 is supplied with a standard hex key guide shoe.

2. Models 746 and 748 are supplied with a keyless Quik-Change™ guide shoe.

ADJUSTING PIVOTING GUIDE SHOE

Disconnect tool from power source.

Do not operate the Tiger Saw® with the guide shoe removed.

The pivoting guide shoe (A) Fig. 12, serves as a rest while making a cut and it can be adjusted to accommodate many types of cutting applications.

1. The Model 745 pivoting guide shoe is adjusted by loosening the two hex screws (with wrench supplied) located on the bottom of the front gear housing (A) Fig. 12A. Loosen both screws enough to allow the pivoting

→

←

→

←

Fig. 10

Fig. 11

guide shoe to move freely. Adjust to desired position and securely tighten both screws.

NOTE: Do not adjust the pivoting guide shoe out so far that it loses contact with the back screw. Doing so will cause the guide shoe to be unstable.

After adjusting, make sure both screws are securely fastened.

2. The Models 746 and 748 are supplied with a keyless Quik-Change™ pivoting guide shoe. To adjust, rotate lever (A) Fig. 12B. releasing the pivoting guide shoe (B). Adjust to desired position and close lever (A) Fig. 12C. The keyless Quik-Change™ pivoting guide shoe is designed with a raised lip (C) at the end that prevents the guide shoe from locking in position if it is extended out too far. After adjusting, make sure the locking lever is completely closed in the locked position (A) Fig. 12C.

NOTE: DO NOT force the locking lever closed. Adjust shoe enough to allow the lever to lock in position without force.

Fig. 12

BEFORE YOU START TO WORK

Select the blade best suited for the material to be cut. For greatest economy, use the shortest blade suitable for the thickness of the material to be cut.

Fig. 12A

Be sure the material to be cut is rigid. Small work pieces should be securely clamped in a bench vise or with clamps to the work table. As the work progresses in scroll or curved cut-out pieces, the material may be readjusted to accommodate the movement of the saw. The saw cuts freely with only slight feed pressure. Forcing the saw will not make it cut faster.

SAWING WOOD

The TIGER SAW® is used much the same as a hand saw in that it is moved toward the operator during the cutting operation. However, since the blade cuts on the up-stroke instead of the down-stroke as in the case of the hand saw, the good or finish side of the work should face down during the cutting operation.

Fig. 12B

Fig. 12C

PLUNGE CUTS

The TIGER SAW® can be used for plunge cutting wood, plywood, wallboard, and plastic materials. DO NOT attempt to plunge cut metal.

Clearly mark line of cut on the work. Grasp front housing with one hand and rear handle with the other hand. To start cut, rest saw on pivoting guide shoe bracket, align blade with the marked line of cut, (blade NOT touching work), as shown in Fig. 13. Start saw. Using guide shoe bracket as a pivot point, roll saw forward by raising rear handle, as shown in Fig. 14. When blade has cut through the work, continue raising the rear handle until saw is perpendicular to the work surface. Keep saw in this position and move blade along line of cut.

SAWING METAL

When cutting angle, H-beam, I-beam, channel, etc., start the cut on the surface where the greatest number of teeth will contact the work. To make a pocket cut, drill a starting hole first. To extend blade life, cutting oil can be applied to the work surface along the line of the cut.

Fig. 13 Fig. 14

TROUBLESHOOTING

For assistance with your tool, visit our website at www.porter-cable.com for a list of service centers, or call the Porter-Cable Customer Care Center at 1-800223-7278.

MAINTENANCE

KEEP TOOL CLEAN

Periodically blow out all air passages with dry compressed air. All plastic parts should be cleaned with a soft damp cloth. NEVER use solvents to clean plastic parts. They could possibly dissolve or otherwise damage the material.

Wear ANSI Z87.1 safety glasses while using compressed air.

FAILURE TO START

Should your tool fail to start, check to make sure the prongs on the cord plug are making good contact in the outlet. Also, check for blown fuses or open circuit breakers in the line.

LUBRICATION

This tool has been lubricated with a sufficient amount of high grade lubricant for the life of the unit under normal operating conditions. No further lubrication is necessary.

BRUSH INSPECTION (If applicable)

For your continued safety and electrical protection, brush inspection and replacement on this tool should ONLY be performed by an AUTHORIZED PORTER-CABLE SERVICE STATION or a PORTER-CABLE FACTORY SERVICE CENTER.

At approximately 100 hours of use, take or send your tool to your nearest authorized Porter-Cable Service Station to be thoroughly cleaned and inspected. Have worn parts replaced and lubricated with fresh lubricant. Have new brushes installed, and test the tool for performance.

Any loss of power before the above maintenance check may indicate the need for immediate servicing of your tool. DO NOT CONTINUE TO OPERATE TOOL UNDER THIS CONDITION. If proper operating voltage is present, return your tool to the service station for immediate service.

• DELTA

+ 36 hidden pages

Porter-Cable 745, 746, 748 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual