Porter-Cable 7310 User Manual 2

Instruction

manual

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. _______________________________________

IMPORTANT

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

ESPAÑOL: PÁGINA 25
FRANÇAISE : PAGE 49

To learn more about Porter-Cable

visit our website at:

http://www.porter-cable.com

Copyright © 2004 Porter-Cable Corporation

Part No. 911999 - 12-10-04

Double Insulated
Laminate Trimmers

MODEL 7310

Trimmer

MODEL 7319

Tilt Base Trimmer

MODEL 7312

Offset Trimmer

MODEL 7320

Underscribe

Trimmer Base

Underscribe

Attachment

For 97311

TABLE OF CONTENTS

Read and understand all warnings and operating instructions
before using any tool or equipment. When using tools or equipment, basic
safety precautions should always be followed to reduce the risk of personal
injury. Improper operation, maintenance or modification of tools or equipment
could result in serious injury and property damage. There are certain
applications for which tools and equipment are designed. Porter-Cable
strongly recommends that this product NOT be modified and/or used 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.

Online contact form at www.porter-cable.com
Postal Mail: Technical Service Manager

Porter-Cable Corporation

4825 Highway 45 North
Jackson, TN 38305

Information regarding the safe and proper operation of this tool is available
from the following sources:

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, and the U.S. Department of Labor regulations

www.osha.gov

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS!

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

SAFETY GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

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

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

FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

CARTON CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

ESPAÑOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

FRANÇAISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

SERVICE CENTER LOCATIONS . . . . . . . . . . . . . . . . . . . . . . .back cover

2

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

and other construction activities contains 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 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, always wear NIOSH/OSHA
approved, properly fitting face mask or respirator when using such tools.

indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.

indicates a potentially hazardous situation which, if not
avoided,could result in death or serious injury.

indicates a potentially hazardous situation which, if not
avoided,may result in minor or moderate injury.

used without the safety alert symbol indicates potentially
hazardous situation which, if not avoided, may result in
property damage.

SAFETY GUIDELINES - DEFINITIONS

CALIFORNIA PROPOSITION 65

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.

3

Read all instructions. Failure to follow all
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.

GENERAL SAFETY RULES

4

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.

GENERAL SAFETY RULES

continued

5
6

ADDITIONAL SPECIFIC SAFETY RULES

1. HOLD POWER TOOLS 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. DISCONNECT TOOL FROM POWER SOURCE before making
adjustments or changing bits.

4. TIGHTEN COLLET NUT securely to prevent the bit from slipping.

5. USE A CLAMP or some other device to hold the workpiece rigidly in position.

and clear the path of the tool of obstructions.

6. CHECK TO SEE THAT THE CORD will not “hang up” during trimming
operation.

7. CLEAR THE TRIMMER BIT AREA before starting motor.

8. MAINTAIN FIRM GRIP on trimmer to resist starting torque.

9. KEEP HANDS CLEAR OF CUTTER when motor is running to prevent

personal injury.

10. KEEP CUTTING PRESSURE CONSTANT. Do not overload motor.

11. LET THE MOTOR COME TO A COMPLETE STOP before putting the tool

down.

12. NEVER TOUCH router bits after use. They may be extremely hot.

13. NEVER TIGHTEN COLLET NUT without a bit.

14.

DO NOT USE LAMINATE TRIMMER MOTOR WITHOUT THE
LAMINATE TRIMMER BASE INSTALLED. Loss of control could result,

causing personal injury or damage to work.

15. WEAR EYE AND HEARING PROTECTION. ALWAYS USE SAFETY

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.

16. USE OF THIS TOOL CAN GENERATE AND DISBURSE

DUST OR OTHER 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.

7

NOTES

8

SAVE THESE INSTRUCTIONS!

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

n

0

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

…/min or …min

-

1

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

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

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

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

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

3

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

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

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

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

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

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

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

IPXX

........................ IP symbol

9

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 W-A
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

Length of Cord in Feet

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.

0-2181818161614141212
2-3181816141412121010
3-418181614121210108
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
16-18 14 12 8 8 6 4 4 2 2
18-20 14 12 8 6 6 4 4 2 2

Nameplate Ampere Rating

EXTENSION CORD SELECTION

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.

10

FUNCTIONAL DESCRIPTION

FOREWORD

Porter-Cable Laminate Trimmers are designed for flush and bevel trimming
laminated plastics, phenolics, and other similar materials having a bonding
agent too hard to be trimmed with ordinary tools.

The Tilt-Base model allows trimming into corners inaccessible to standard
trimmers and to trim laminated surfaces joining at angles of 45° to 90°. This
feature eliminates the need for hand-trimming in many applications.

The Off-Set Base Trimmer is designed for trimming into the corner of a
back splash and trimming narrow ledges which are already mounted
against a wall or another surface.

The Underscribe Base is designed for making accurate “butt” joints in
laminated plastics, phenolics and other similar materials. The Underscribe
Base is used with the Model 7301 Trimmer Motor and the 43109 Trim Bit.

SELECTING THE BIT

These trimmers are equipped with a

1

/4" diameter collet to accept laminate

trimming bits having

1

/4" diameter shanks. Bits are available as an

accessory.

CARTON CONTENTS

1. Trimmer motor

2. Trimmer base (or bases, if a kit is purchased)

3. Wrench (or wrenches, if a kit is purchased)

OPERATION

MODEL 7301 MOTOR UNIT

All laminate trimmers covered by this
manual incorporate Model 7301
Motor Unit and are operated as
follows:

TO START AND STOP MOTOR

Fig. 1 shows the location of the
power switch. When the switch
actuator is in the upper position the
switch is “OFF”. When the actuator is
in the lower position the switch is
“ON”.

Make sure switch is “OFF” and
power circuit voltage is the same as that shown on the specification plate of
the trimmer motor. Connect trimmer to power circuit.

GRASP TRIMMER FIRMLY TO RESIST STARTING
TORQUE AND MAKE SURE BIT IS CLEAR OF
WORKPIECE AND FOREIGN OBJECTS.

Slide switch to “ON” position to start motor. Slide switch to “OFF” position
to stop motor.

Fig. 1

SWITCH

11

TO AVOID PERSONAL INJURY OR DAMAGE TO FINISHED
WORK ALWAYS ALLOW THE MOTOR TO COME TO A
COMPLETE STOP BEFORE SETTING TRIMMER DOWN.

TO INSTALL BIT

DISCONNECT TOOL FROM POWER SOURCE.

1. On Models 7310 and 7319 bits may be installed with the motor unit
either assembled or removed from the base. See instructions under Model
7312 for installing the bit in the OFFSET trimmer. See instructions under
Model 7320 for installing the bit in the UNDERSCRIBE trimmer.

2. Clean and insert shank of bit into collet until end of shank bottoms. Then
withdraw bit approximately

1

/16

".

3. Depress spindle lock (Fig. 2) and rotate collet nut clockwise by hand
until lock engages hole in motor spindle.

4. While holding spindle lock engaged, tighten collet nut securely by
turning clockwise using wrench provided.

NEVER TIGHTEN COLLET WITHOUT BIT INSERTED,
TO DO SO MAY CAUSE DAMAGE TO COLLET.

TO REMOVE BIT

DISCONNECT TOOL FROM POWER SOURCE.NEVER TOUCH TRIMMER BITS

IMMEDIATELY AFTER USE, AS THEY MAY BE HOT.

1. On Model 7310 and 7319 bits may be removed with the motor unit either
assembled or removed from base. See instructions under Model 7312 for
removing bits from the Offset Trimmer.

2. Depress spindle lock and rotate collet nut counterclockwise by hand
until lock engages hole in motor spindle.

3. While holding spindle lock engaged, loosen collet nut by turning
counterclockwise with wrench provided.

4. If bit does not remove easily from collet, tap the collet nut with wrench to
release bit.

MODEL 7310 TRIMMER ASSEMBLY

Model 7310 Trimmer is completely assembled at the factory. The base is
assembled to, or removed from Model 7301 Motor with base locking screw
(Fig. 3).

NOTE: There is a spring and a flat washer on the locking screw. The
spring is assembled with its small end against head of screw. The
washer is assembled to the screw after the spring.

Fig. 2

BIT

SPINDLE
LOCK

COLLET NUT

ADJUSTING DEPTH OF CUT

DISCONNECT TOOL FROM POWER SOURCE.

1. Loosen base locking screw (Fig. 3) approximately one-quarter turn.

2. Turn depth adjusting wheel (Fig. 3) clockwise, looking at top of wheel,
to raise cutter reducing depth of cut or counterclockwise to lower cutter for
increasing depth of cut.

3. Tighten base locking screw securely and make a test cut in scrap
material and check depth of cut.

4. Repeat steps 1 through 3 until desired depth of cut is achieved.

ADJUSTING SUB-BASE ALIGNMENT

Applications using a templet guide require the bit to be centered within the
guide. This, in turn, requires the center hole in the sub-base to be in line
with the collet of the motor unit. Your model has an adjustable sub-base
which has been aligned at the factory. If the sub-base has been removed
and/or readjustment is required, proceed as follows:

DISCONNECT TOOL FROM POWER SOURCE.

1. Install 42054 Templet Guide (available as an accessory) to the subbase and
tighten securely.

2. Loosen sub-base mounting screws just enough to allow sub-base to move on
base.

3. Install a straight

1

/

4" diameter bit in collet of motor unit and tighten securely.

4. Assemble motor unit to base, align hole in templet guide with

1

/

4" diameter bit

and adjust depth of cut so that bit extends through templet guide. Tighten motor unit
in base.

5. Tighten sub-base mounting screws securely.

73100 EDGE GUIDE KIT

The Model 73100 Edge Guide Kit is available (as an accessory), for use with
the Model 310 trimmer. The 73100 is designed for use with non-piloted bits,
on curved or straight applications. Non-piloted bits can produce a 90°
straight cut, a 10° bevel cut, or a 22° bevel cut. The kit (Fig. 4) contains:

A – Base and roller guide - for flush or bevel trimming
B – Edge guide – for flush trimming
C – Edge guide – for bevel trimming
D – Straight edge guide – for straight trimming
E – Guide setting gauge
F – Mounting screws
G – Wrench

DISCONNECT TOOL FROM POWER SOURCE.

Fig. 3

LOCKING
SCREW

SPRING

WASHER

DEPTH ADJUSTING
WHEEL

12
13

ASSEMBLING AND ADJUSTING BASE AND ROLLER GUIDE

1.

Remove power unit from base unit (see “TO INSTALL BIT”), and install the bit.

2.

The base and roller guide (A) Fig. 4, is assembled at the factory. To
assemble, remove a sub-base mounting screw (A) Fig. 5 and insert alignment pin
in guide base into hole (C) in bottom of trimmer sub-base. Fasten with two
mounting screws (F) Fig. 4, as shown in Fig. 5A. Do not tighten at this time.

3. Install proper bit as outlined under “TO INSTALL BIT.” Then, install motor to
base and adjust depth of cut (see “ADJUSTING DEPTH OF CUT”).

4. Align roller guide with bit by loosening locking screw (Fig. 5A) and turning
adjusting screw, with hex wrench provided, until guide is in desired location.

NOTE: Guide mounting holes are oversized allowing guide to be

rotated on alignment pin to align guide roller with bit.

5. For making flush cuts align roller guide with straight portion of bit. For
bevel cuts, adjust cutting depth so that only the bevel portion of bit projects
through trimmer base and adjust roller guide to produce desired amount of
bevel.

6. Tighten all screws and make a trial cut on scrap material to check
alignment. Readjust if necessary.

FLUSH TRIMMING

1. DISCONNECT TOOL FROM POWER SOURCE.

2. Attach base and guide to trimmer as outlined under ASSEMBLING AND
ADJUSTING BASE AND ROLLER.

3. Remove roller guide and replace with flush trimming guide (B) Fig. 4.
This guide may be identified by the molded on letter “F”. The stud on the end
of this guide must face toward the trimmer base.

4. Install guide setting gauge (E) Fig. 4, into trimmer collet (see TO INSTALL
BIT). Install trimmer motor to base. Adjust guide so that hole in end of gauge
may be positioned over the guide stud.

Fig. 4

ABCD EFG

ADJUSTING
SCREW

LOCKING SCREW

MOUNTING
SCREW

Fig. 5A

Fig. 5

A

C

14

5. Remove guide setting gauge from trimmer and install flush trimming bit.

6. Adjust depth of cut so that the straight portion of the bit extends below
the trimmer base at least the thickness of the material to be trimmed.

7. Make a trial cut on scrap material. Readjust if necessary.

BEVEL TRIMMING

1. Follow Steps 1 through 5 under FLUSH TRIMMING, except install bevel
trimming guide (C) Fig. 4. This guide is identified by the letter “B” molded
onto it.

2. Adjust depth of cut so that only the bevel portion of the bit extends
below trimmer base at least the thickness of the material to be trimmed.

3. Make a trial cut on scrap material to check alignment. Readjust if
necessary.

USING STRAIGHT EDGE GUIDE

The straight edge guide (D) Fig. 4, maybe used with either bit for trimming
straight edges.
Assemble it to the guide base and adjust similar to the other guides.

MODEL 7319 TILT BASE TRIMMER ASSEMBLY

Model 7319 Tilt Base Trimmer is completely assembled at the factory. The
base is assembled or removed from Model 7301 motor with base locking
screw (A) Fig. 6.

NOTE: There is a flat washer (B) Fig. 6, on the locking screw.

Model 7319 Tilt Base is designed for use with 43216PC flush trim bit

for trimming into corners. It may also be used with other “self pilot”

trim bits for conventional trimming at 90° setting.

ADJUSTING DEPTH OF CUT

DISCONNECT TOOL FROM POWER SOURCE.

Loosen base locking screw and move motor unit up or down to

decrease or increase depth of cut.

It may be necessary with some bits to withdraw bit from
collet to obtain maximum depth of cut. When doing this

Fig. 6

C

D

B

A

15

be sure at least

1

/

2" of bit shank is engaged in collet. Do not use bits

that result in having less than

1

/

2" of bit shank engaged in collet. To

do so may cause poor gripping of collet resulting in loose bit and

damage to work, or personal injury should the bit come out of collet.

ADJUSTING TILT

1. Loosen two tilt locking screws (C) Fig. 6, (one on each side of base)
using wrench provided.

2. Tilt base aligning index mark (D) Fig. 6, with desired angle and tighten
securely.

3. Make a trial cut on scrap material to check alignment. Readjust if
necessary.

MODEL 7312 OFFSET TRIMMER ASSEMBLY

Model 7312 Offset Trimmer is completely assembled at the factory. The offset
base is assembled to Model 7301 Motor as outlined below. Model 7312
Offset Trimmer can be disassembled by reversing the following assembly
instructions.

ASSEMBLING OFFSET BASE TO MOTOR

DISCONNECT TOOL FROM POWER SOURCE.

1. Remove collet nut and collet from motor unit.

2. Assemble drive pulley (A) Fig. 7, to motor spindle and tighten securely.

3. Use a phillips screwdriver to remove the three sub-base mounting
screws (A) Fig. 8, from the base, and remove the sub-base.

4. Position the base to the motor and drive pulley assembly (from
step 2). Be sure that the motor drive pulley engages the drive belt (inside the
base housing).

5. Secure the motor to the base (see Fig. 9), with the thumbscrew (A),
spring (B), and washer (C).

6. Locate the #6-32 ×

3

/8" screw from the hardware package. Use a phillips

screwdriver to install this screw (D), as shown in Fig. 9. Tighten securely.

7. Clean collet nut and collet, and assemble to the spindle in the offset
base. DO NOT TIGHTEN COLLET NUT AT THIS TIME. Tightening the collet
nut without a bit installed in the collet is likely to damage the collet.

8. Position sub-base to base housing and secure with the three screws that
were removed in step 3.

A

A

A

A

SUB-BASE

Fig. 7

Fig. 8

16

TO INSTALL & REMOVE BIT

DISCONNECT TOOL FROM
POWER SOURCE.

1. Insert long portion of hex wrench
(furnished) through spindle lock hole (see Fig.

10) so that wrench protrudes from both sides
of base housing. It may be necessary to rotate
spindle by hand to align hole in spindle with
holes in housing.

2. Clean and insert bit shank into collet.
Tighten collet nut securely with collet wrench.

NEVER TIGHTEN OR LOOSEN COLLET NUT
WITH SPINDLE LOCK ENGAGED IN MOTOR
SHAFT. TO DO SO MAY DAMAGE DRIVE
BELT.

3. To remove bit, reverse above procedure.
If bit does not remove easily, tap the bit shank
with wrench to release bit.

NEVER TIGHTEN COLLET
WITHOUT BIT INSERTED, TO DO
SO MAY CAUSE DAMAGE TO
COLLET.

ADJUSTING DEPTH OF CUT

DISCONNECT TOOL
FROM POWER

SOURCE.

1. Loosen bit in collet (See TO
INSTALL & REMOVE BIT).

2. Position hex wrench (furnished)
to depth adjusting screw (See
Fig.11).

3. Hold spindle with fingers and apply light upward pressure on bit (to
maintain contact between bit shank and adjusting screw) while turning hex
wrench to adjust bit exposure. Turn screw counter-clockwise to increase
exposure; turn screw clockwise to decrease exposure.

4. When using long shank bits: The distance from the bottom of the sub­base to the collet may be increased (approximately

3

/16") by turning the sub-

base over (See Fig.12):

A. Remove three sub-base

mounting screws.

B. Turn sub-base over and

re-attach using screws
removed in step A.

OPERATION

1. Material to be trimmed must
overhang the base material by at
least

1

/

8".

2. ALWAYS WEAR
SAFETY GLASSES WHILE
OPERATING A
LAMINATE TRIMMER.

Fig. 9

D

C
B

A

Fig. 10

HEX
WRENCH

Fig. 11

HEX
WRENCH

SPINDLE

17

3. DISCONNECT TOOL FROM POWER SOURCE.

4. Firmly grasp motor housing being
sure switch is in the “OFF” position.

5. Verify bit is clear of foreign objects
and cord will not “hang up” on any
obstructions.

6. Be sure workpiece is firmly held in
place. Use clamps where necessary to
secure workpiece.

7. Plug in power supply cord. Be alert
to resist starting torque of motor. Turn
motor “ON”.

8. Allow motor to reach “full speed”.
Place base of trimmer on surface to be trimmed and feed into work until bit
pilot contacts base material. When guiding on a previously laminated
surface, always wax or lubricate the area that trimmer will guide against.

NOTE: While operating trimmer with tilt base at any tilt setting other
than “0” degrees, the long side of the base must be kept
perpendicular to the piloting surface to prevent possible work
spoilage.

9. Feed from left to right with a smooth steady motion (See Fig. 13).

10. At completion of trimming operation, turn switch “OFF”. Allow motor to
come to a complete stop before laying trimmer down.

Fig. 12

SUB-BASE
INVERTED

3

/

16"

➤

➤

Fig. 13

18

UNDERSCRIBE 7320 TRIMMER ASSEMBLY

The Underscribe Trimmer Base is assembled to the Model 7301 Trimmer
Motor as follows:
NOTE: The 43109 Trim Bit must be installed into the Trimmer Motor before
attaching the motor to the Underscribe Base.

DISCONNECT TOOL FROM POWER SOURCE.

1. Clean and insert shank of bit (A) Fig. 14, into collet until end of shank

TYPICAL APPLICATIONS

TRIMMING

3

/

4" IN-AND-OUT TRIMMING SCRIBING OF

VERTICAL BACKSPLASH OF INSTALLED CORNER BACKSPLASH TO WALL

APPLICATION – Trimming front edge of

3

/4" vertical backsplash. This is an opera-

tion standard trimmers with round or
square bases are unable to do without
the use of a special bit.

Self-piloted bit
guides trimmer for
one-pass trimming
every time.

Triangular base

enables trimming with

backsplash in place.

OPERATION – Trimming

3

/4" backsplash

with the new Porter-Cable Offset Laminate
Trimmer fitted with a solid carbide self­piloted bit.

APPLICATION – Trimming into and
out of installed backsplash corner
with little or no hand trimming
required.

Triangular base
enables complete
corner trimming
with backsplash
in place.

OPERATION – The new Porter-Cable
Offset Trimmer will trim into and out
of 90° corners with ease using self­piloted bit.

APPLICATION – Accurately scribing the back
side of a preassembled panel or post-formed
backsplash. Once the lip is accurately scribed,
the trimmed portion is then pushed against the
wall and mated exactly.

Self-piloted bit
follows every
trimmer movement
to create exact
reproduction of wall
surface in one pass!

Front edge
of trimmer

is guided

against

wall.

OPERATION – The guide assembly must be
removed. Using the self-piloted bit, the
Porter-Cable Offset Trimmer scribes
accurately to the wall surface.

Maintain

3

/4" separation

from wall for scribing.

Trims up to
vertical surfaces.

Trims odd angled
corners less than
or greater than
90°.

19

bottoms. Then pull bit out
approximately

1

/8

".

2. Depress spindle lock (B) Fig. 14,
and rotate collet nut (C) clockwise by
hand until lock engages hole in motor
spindle.

3. While holding spindle lock
engaged, tighten collet nut securely by
turning clockwise using wrench
provided.

NEVER TIGHTEN COLLET
WITHOUT BIT INSERTED, TO DO SO
MAY CAUSE DAMAGE TO COLLET.

4. Position base (A) Fig. 15, to motor
(B) and secure using locking screw (E), spring (D) and washer (C).

NOTE: Orient spring with small end against head of locking screw.

5. Align the two holes in the undersciribe attachment (G) Fig. 15, with the
two holes in the base (A).

6. Attach the underscribe attachment (G) Fig. 15, to the base (A) with two
screws (H) and eccentric washer (J).

ADJUSTING BIT EXPOSURE

DISCONNECT TOOL FROM POWER SOURCE.

1. Loosen base locking screw (E) Fig. 15, approximately one-quarter of a
turn.

2. Turn depth adjusting wheel (F) Fig. 15, counterclockwise (looking at top
of wheel) to lower bit until it just touches the guide plate.

3. Firmly tighten locking screw (E).

ADJUSTING GUIDE PLATE

The Underscribe Trimmer Base is equipped with an adjustable guide plate
(see Fig. 16). The guide plate is adjusted by rotating the eccentric, using a
special wrench that is supplied with the Trimmer Base. To adjust guide,
proceed as follows:

1. Make a trial cut using scrap material and check fit.

2. DISCONNECT TOOL FROM POWER SOURCE.

3. Turn eccentric to correct fit-up:
If joint is TOO LOOSE (crack between the two pieces of laminate), turn

eccentric clockwise.

Fig. 14

A

B

C

Fig. 15

A

B

CDE

F

G

H

J

20

If joint to TOO TIGHT (laminate
will not snap into place), turn
eccentric counterclockwise.

4. Repeat Steps 1 through 3 as
required to achieve a good fit­up.

USING THE
UNDERSCRIBE
TRIMMER

The bottom plate of the
Underscribe Trimmer has a guide lip (see Fig. 17). This guide lip is moved
along an installed piece of laminate as the trimmer bit cuts the mating piece
of laminate.

The “butt” joint is commonly used in the construction of face frames.
Proceed as follows to install a laminate covering on a face frame. Similar
procedures would be required for making any “butt” joint.

ALWAYS WEAR
SAFETY GLASSES WHILE
OPERATING A LAMINATE
TRIMMER.

A Trimmer Base
B Sub-Base
C Installed laminate
D Guide Lip
E Bit
F Laminate

1. Cut the pieces of laminate covering to rough size and apply contact
cement to the face frame and the laminate pieces in the normal manner.

NOTE: Cut the rail covering approximately 1" longer than the rail (to
allow material for trimming).

2. Apply the laminate to all stiles.

3. Position the laminate to a rail with at least

1

/4", and no more than 3/4",

overlapping each stile (see Fig. 18). Use a roller to secure the center section
of the laminate to the
rail. Leave at least 4" of
the laminate loose, at
both ends of the rail
(Do not roll down).

4. Securely clamp
the face frame
assembly to the
worktable to prevent
movement during the
trimming operation.

Fig. 17

A

B
C F

E

D

Fig. 18

OVERLAP

1

/4" TO 3/4"

Fig. 16

21

5. Position the underscribe trimmer onto the face frame so that the top
(see Fig. 19), is against the edge of the stile.

NOTE: The trimmer should be to the right of the rail, so that the
cutting action will move from right to left (see Fig. 19).

6. Verify that bit is clear of foreign objects and that cord will not hang on
any obstructions.

7. Grasp motor firmly to resist starting torque and move switch button to
ON position.

8. Allow motor to reach full-speed. Feed trimmer right to left with a smooth
steady motion.

NOTE: The tapered edge of the underscribe base will slide
underneath the rail covering, lifting the laminate into the cutter.

9. After completing the cut, move the switch button to the OFF position
and allow the motor to come to a complete stop before laying the trimmer
down.

10. Press the rail end into position and roll down.

11. Repeat the above process as necessary to complete the face frame.

Fig. 19 Fig. 20

TROUBLESHOOTING GUIDE

For assistance with your tool, visit our website at www.porter-cable.com for a
list of service centers or call the Porter-Cable help line at 1-800-487-8665.

22

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

•DELTA 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.

MAINTENANCE

23

SERVICE

REPLACEMENT PARTS

When servicing use only identical replacement parts.

SERVICE AND REPAIRS

All quality tools will eventually require servicing or replacement of parts due to
wear from normal use. These operations, including brush inspection and
replacement, should ONLY be performed by either an AUTHORIZED PORTER­CABLE SERVICE STATION or a PORTER-CABLE

•DELTA FACTORY SERVICE

CENTER. All repairs made by these agencies are fully guaranteed against
defective material and workmanship. We cannot guarantee repairs made or
attempted by anyone other than these agencies.

Should you have any questions about your tool, feel free to write us at any time.
In any communications, please give all information shown on the nameplate of
your tool (model number, type, serial number, etc.).

ACCESSORIES

A complete line of accessories is available from your Porter-Cable•Delta
Supplier, Porter-Cable

•Delta Factory Service 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.

Since accessories other than those offered by Porter­Cable

•Delta have not been tested with this product, use of

such accessories could be hazardous. For

safest operation,

only Porter-Cable

•Delta recommended accessories should

be used with this product.

24

PORTER-CABLE LIMITED

ONE YEAR WARRANTY

Porter-Cable warrants its Professional Power Tools for a period of one year from the date of original
purchase. We will repair or replace at our option, any part or parts of the product and accessories
covered under this warranty which, after examination, proves to be defective in workmanship or
material during the warranty period. For repair or replacement return the complete tool or accessory,
transportation prepaid, to your nearest Porter-Cable Service Center or Authorized Service Station.
Proof of purchase may be required. This warranty does not apply to repair or replacement required
due to misuse, abuse, normal wear and tear or repairs attempted or made by other than our Service
Centers or Authorized Service Stations.

ANY IMPLIED WARRANTY, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE, WILL LAST ONLY FOR ONE (1) YEAR FROM THE DATE
OF PURCHASE.

To obtain information on warranty performance please write to: PORTER-CABLE CORPORATION,
4825 Highway 45 North, Jackson, Tennessee 38305; Attention: Product Service. THE FOREGOING
OBLIGATION IS PORTER-CABLE’S SOLE LIABILITY UNDER THIS OR ANY IMPLIED WARRANTY
AND UNDER NO CIRCUMSTANCES SHALL PORTER-CABLE BE LIABLE FOR ANY INCIDENTAL
OR CONSEQUENTIAL DAMAGES. Some states do not allow limitations on how long an implied
warranty lasts or the exclusion or limitation of incidental or consequential damages, so the above
limitation or exclusion may not apply to you.

This warranty gives you specific legal rights and you may also have other legal rights which vary
from state to state.

WARRANTY

The following are trademarks of PORTER-CABLE •DELTA (Las siguientes son marcas registradas de PORTER-CABLE •DELTA S.A.) (Les
marques suivantes sont des marques de fabriquant de la PORTER-CABLE

•

DELTA): Auto-Set®, BAMMER®, B.O.S.S.®, Builder’s Saw®,

Contractor’s Saw

®

, Contractor’s Saw II™, Delta®, DELTACRAFT®, DELTAGRAM™, Delta Series 2000™, DURATRONIC™, Emc²™, FLEX®, Flying

Chips™, FRAME SAW

®

, Grip Vac™, Homecraft®, INNOVATION THAT WORKS®, Jet-Lock®, JETSTREAM®, ‘kickstand®, LASERLOC®, MICRO-

SET

®

, Micro-Set®, MIDI LATHE®, MORTEN™, NETWORK™, OMNIJIG®, POCKET CUTTER®, PORTA-BAND®, PORTA-PLANE®, PORTER-

CABLE

®

&(design), PORTER-CABLE®PROFESSIONAL POWER TOOLS, PORTER-CABLE REDEFINING PERFORMANCE™, Posi-Matic®, Q-

3

®

&(design), QUICKSAND®&(design), QUICKSET™, QUICKSET II®, QUICKSET PLUS™, RIPTIDE™&(design), SAFE GUARD II®, SAFE-LOC®,

Sanding Center

®

, SANDTRAP®&(design), SAW BOSS®, Sawbuck™, Sidekick®, SPEED-BLOC®, SPEEDMATIC®, SPEEDTRONIC®, STAIR EASE®,

The American Woodshop

®

&(design), The Lumber Company®&(design), THE PROFESSIONAL EDGE®, THE PROFESSIONAL SELECT®, THIN-

LINE™, TIGER

®

, TIGER CUB®, TIGER SAW®, TORQBUSTER®, TORQ-BUSTER®, TRU-MATCH™, TWIN-LITE®, UNIGUARD®, Unifence®,

UNIFEEDER™, Unihead

®

, Uniplane™, Unirip®, Unisaw®, Univise®, Versa-Feeder®, VERSA-PLANE®, WHISPER SERIES®,
WOODWORKER’S CHOICE™.
Trademarks noted with ™ and ® are registered in the United States Patent and Trademark Office and may also be registered in other countries.
Las Marcas Registradas con el signo de ™ y ® son registradas por la Oficina de Registros y Patentes de los Estados Unidos y también pueden
estar registradas en otros países. Marques déposées, indiquées par la lettre ™ et ®, sont déposées au Bureau des brevets d’invention et
marques déposées aux Etats-Unis et pourraient être déposées aux autres pays.

PORTER-CABLE • DELTA SERVICE CENTERS

(CENTROS DE SERVICIO DE PORTER-CABLE • DELTA)

(CENTRE DE SERVICE PORTER-CABLE • DELTA)

Parts and Repair Service for Porter-Cable •Delta Power Tools are Available at These Locations

(Obtenga Refaccion de Partes o Servicio para su Herramienta en los Siguientes Centros de Porter-Cable

•

Delta)

(Locations où vous trouverez les pièces de rechange nécessaires ainsi qu’un service d’entretien)

Authorized Service Stations are located in many large cities. Telephone [phone] or 731-541-6042 for assistance locating one. Parts and
accessories for Porter-Cable

•

Delta products should be obtained by contacting any Porter-Cable •Delta Distributor, Authorized Service

Center, or Porter-Cable

•

Delta Factory Service Center. If you do not have access to any of these, call 888-848-5175 and you will be directed to

the nearest Porter-Cable

•

Delta Factory Service Center. Las Estaciones de Servicio Autorizadas están ubicadas en muchas grandes ciudades.

Llame al 800-487-8665 ó al 731-541-6042 para obtener asistencia a fin de localizar una. Las piezas y los accesorios para los productos Porter­Cable

•

Delta deben obtenerse poniéndose en contacto con cualquier distribuidor Porter-Cable •Delta, Centro de Servicio Autorizado o Centro

de Servicio de Fábrica Porter-Cable

•

Delta. Si no tiene acceso a ninguna de estas opciones, llame al 888-848-5175 y le dirigirán al Centro de

Servicio de Fábrica Porter-Cable

•

Delta más cercano. Des centres de service agréés sont situés dans beaucoup de grandes villes. Appelez au

800-487-8665 ou au 731-541-6042 pour obtenir de l’aide pour en repérer un. Pour obtenir des pièces et accessoires pour les produits Porter­Cable

•

Delta, s’adresser à tout distributeur Porter-Cable •Delta, centre de service agréé ou centre de service d’usine Porter-Cable •Delta. Si

vous n’avez accès à aucun de ces centres, appeler le 888-848-5175 et on vous dirigera vers le centre de service d’usine Porter-Cable

•

Delta le

plus proche.

7.2-PTG-F-1

CANADIAN PORTER-CABLE • DELTA SERVICE CENTERS

ALBERTA

Bay 6, 2520-23rd St. N.E.
Calgary, Alberta
T2E 8L2
Phone: [phone]
Fax: [phone]

BRITISH COLUMBIA

8520 Baxter Place
Burnaby, B.C.
V5A 4T8
Phone: [phone]
Fax: [phone]

MANITOBA

1699 Dublin Avenue
Winnipeg, Manitoba
R3H 0H2
Phone: [phone]
Fax: [phone]

ONTARIO

505 Southgate Drive
Guelph, Ontario
N1H 6M7
Phone: [phone]
Fax: [phone]

QUÉBEC

1515 Ave.
St-Jean Baptiste, Suite 160
Québec, P.Q.
G2E 5E2
Phone: [phone]
Fax: [phone]

1447, Begin
St-Laurent, (Mtl), P.Q.
H4R 1V8
Phone: [phone]
Fax: [phone]

ARIZONA

Tempe 85282 (Phoenix)
2400 West Southern Avenue
Suite 105
Phone: [phone]
Fax: [phone]

CALIFORNIA

Ontario 91761 (Los Angeles)
3949A East Guasti Road
Phone: [phone]
Fax: [phone]

San Diego 92111
7638 Clairemnot Blvd.
Phone: [phone]
Fax: [phone]

San Leandro 94577 (Oakland)
3039 Teagarden Street
Phone: [phone]
Fax: [phone]

COLORADO

Arvada 80003 (Denver)
8175 Sheridan Blvd., Unit S
Phone: [phone]
Fax: [phone]

FLORIDA

Davie 33314 (Miami)
4343 South State Rd. 7 (441)
Unit #107
Phone: [phone]
Fax: [phone]

Tampa 33609
4538 W. Kennedy Boulevard
Phone: [phone]
Fax: [phone]

GEORGIA

Forest Park 30297 (Atlanta)
5442 Frontage Road,
Suite 112
Phone: [phone]
Fax: [phone]

ILLINOIS

Addison 60101 (Chicago)
400 South Rohlwing Rd.
Phone: [phone]
Fax: [phone]

Woodridge 60517 (Chicago)
2033 West 75th Street
Phone: [phone]
Fax: [phone]

MARYLAND

Elkridge 21075 (Baltimore)
7397-102 Washington Blvd.
Phone: [phone]
Fax: [phone]

MASSACHUSETTS

Franklin 02038 (Boston)
Franklin Industrial Park
101E Constitution Blvd.
Phone: [phone]
Fax: [phone]

MICHIGAN

Madison Heights 48071 (Detroit)
30475 Stephenson Highway
Phone: [phone]
Fax: [phone]

MINNESOTA

Minneapolis 55429
5522 Lakeland Avenue North
Phone: [phone]
Fax: [phone]

MISSOURI

North Kansas City 64116
1141 Swift Avenue
Phone: [phone]
Fax: [phone]

St. Louis 63119
7574 Watson Road
Phone: [phone]
Fax: [phone]

NEW YORK

Flushing 11365-1595 (N.Y.C.)
175-25 Horace Harding Expwy.
Phone: [phone]
Fax: [phone]

NORTH CAROLINA

Charlotte 28270
9129 Monroe Road, Suite 115
Phone: [phone]
Fax: [phone]

OHIO

Columbus 43214
4560 Indianola Avenue
Phone: [phone]
Fax: [phone]

Cleveland 44125
8001 Sweet Valley Drive
Unit #19
Phone: [phone]
Fax: [phone]

OREGON

Portland 97230
4916 NE 122 nd Ave.
Phone: [phone]
Fax: [phone]

PENNSYLVANIA

Willow Grove 19090 (Philadelphia)
520 North York Road
Phone: [phone]
Fax: [phone]

TEXAS

Carrollton 75006 (Dallas)
1300 Interstate 35 N, Suite 112
Phone: [phone]
Fax: [phone]

Houston 77043
4321 Sam Houston Parkway, West
Suite 180
Phone: [phone]
Fax: [phone]

WASHINGTON

Auburn 98001(Seattle)
3320 West Valley HWY, North
Building D, Suite 111
Phone: [phone]
Fax: [phone]