Central Machinery 31849 Guía de referencia rápida

31849

ASSEMBLY & OPERATING INSTRUCTIONS

7” RABBETING

JOINTER WITH STAND

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our Web Site at www.harborfreight.com

or any artwork contained herein may be reproduced in any shape or form without the ex-

press written consent of Harbor FreightTools.

For technical questions and replacement parts please call 1-800-444-3353.

THANKYOU for choosing a HARBOR FREIGHTTOOLS product. For future reference, please complete the

owner’s record below:

Model______________ Serial No.______________ Purchase Date_____________

SAVETHE RECEIPT, WARRANTY AND THESE INSTRUCTIONS. It is important that you read the entire

manual to become familiar with the unit BEFORE you begin assembly.

Technical Specifications

Tool Name:7" Rabbeting JointerWith Stand

Item Number: 31849

Motor: 1 HP, 110V, 4.9 Amps, 750 Watts, Single Phase

Max. Depth of Cut: 1/2”

Rabbet Cut: 1/2”

Fence: 35-3/8” x 3-3/4”

RabbetingLedge: 3-1/4”

CuttingWidth: 7”

Cutter Head Speed: 4655 RPM

FenceTilt: 45 Degrees Right / Left

Overall Dimensions: 47-1/2” x 19-1/2” x 36-1/2”

Table Height: 32-1/2”

InfeedTable: 8” x 18-1/2”

Warning: The warnings, cautions and instructions discussed in this instruction manual

cannot cover all possible conditions and situations that may occur. It must

be understood by the operator that COMMON SENSE AND CAUTION ARE

FACTORS WHICH CANNOT BE BUILT INTOTHIS PRODUCT, BUT

MUST BE SUPPLIED BYTHE OPERATOR.

The Operator

PLEASE REMEMBER:

Do not operate the product if under the influence of alcohol or drugs. Read warning labels on prescriptions to

determine if your judgment/reflexes might be impaired.

Do not wear loose clothing or jewelry as they can be caught in moving parts.

Non-skid footwear is recommended.

Wear restrictive hair covering to contain long hair.

Use eye and ear protection. Always wear ANSI approved impact safety goggles and dust mask or respirator

when working around metal, wood and chemical dusts and mists. Wear a full-face shield if you are producing

woodchips.

Do not reach over or across running machines. Maintain proper footing and balance at all times.

Do not abuse the power cord. Do not yank on cord to disconnect it from outlet. Keep the cord away from heat,

oil and sharp edges.

Feed the work into the machine against the direction of rotation.

#31849 Page 2

Use the right tool for the job. Do not attempt to force a small tool or attachment to do the work of a

larger industrial tool. There are certain applications for which this tool was designed. Do not modify

this tool and do not use this tool for a purpose for which it was not intended.

WorkArea

TO AVOID RISK OF PERSONAL INJURY, EQUIPMENT DAMAGE, FIRE AND SHOCK, MAKE SUREYOUR

WORK AREA IS:

Free of damp, wet or rainy conditions.

Free of children (never let them handle tools or machinery).

Well-lit.

Clean and uncluttered.

Before Operating

Before using any tool, any part that appears damaged should be carefully checked to determine that it will

operate properly and perform its intended function.

Before operating your Jointer check for damaged parts.

Make certain that the power is OFF before plugging the tool in.

Make sure all clamps, locks and bolts are tight.

Use grounded receptacle only for 110 Volt hook-up.

Give the Jointer a test run. If it makes an unfamiliar noise or vibrates irregularly, turn it off, unplug it and have

theproblemcorrected by a qualifiedservicetechnician.

Keep the Cutterhead sharp and free of all rust and pitch.

ALWAYS use a push block when jointing stock.

DO NOT perform jointing operations on materials shorter than 8 inches, narrower than 3/4 inches, or less than

1/4 inch thick.

DO NOT make cuts deeper than 1/8" on a single pass.

Check the feed rollers to be sure chips and sawdust are not caught in them. If the Rollers are not seated

firmly, the Feed Rolls will not hold the stock firmly against the bed. This may result in kickback during

operation.

Make certain to turn off and unplug the Jointer when doing any adjustments or maintenance. The tool should

always be turned off and unplugged when not in use.

Keep Guards in place and in working order.

Note: Performance of this tool may vary depending on variations in local line voltage. Extension Cord usage

may also affect tool performance.

#31849 Page 3

Maintenance: For your own safety, maintenance should be performed regularly by a qualified technician.

Caution: Some woods contain preservatives such as copper chromium arsenate (CCA) which can be

toxic. When cutting these materials extra care should be taken to avoid inhalation and minimize skin

cintact.

Grounding/VoltageWarning

Common household current is 110-120 volts. As long as the outlet used with the tool is rated from 110-120V

there will be no complications using it with household receptacles. Plug the tool into a 110-120V properly

grounded outlet protected by a 15-amp, dual element time delay or circuit breaker.

NEVER try to plug a 110-120V tool into a 220-240V circuit or serious complications and possible injury to the

operator may occur. The plugs have different shapes to prevent this.

This tool has a three-prong plug. The third (round) prong is the ground. Cutting off the ground will result in a

safety hazard and void the warranty.

If the outlet you are planning to use is the two-prong type, do not remove or alter the grounding prong in any

manner.Use an adapter and always connect the grounding plug to a known grounding source. It is

recommended that you have a qualified electrician replace the two-prong outlet with a properly grounded

three- prong outlet.

Extension Cords

Your tool has a three-prong plug, therefore you must use a three-prong extension cord. Only use rounded

jacket extension cords listed by the Underwriters Laboratories (UL). Improper use of extension cords may

cause inefficient operation of your tool which can result in overheating. Be sure your extension cord is rated to

allow sufficient current flow to the motor.

If you are using the tool outdoors, use an extension cord rated for outdoor use (signified by “WA”on the jacket).

The extension cord must have a minimum wire size depending on the amperage of the tool and the length of the

extension cord. This size is determined by its AWG (American Wire Gauge) rating. The smaller the gauge, the

greater the cable’s capacity. The amount of cords used does not matter: Total length determines the minimum

AWG rating. Every cord must meet the AWG rating. Use the chart below to determine what AWG rating is

requiredfor yoursituation. Cordlength israted infeet. Harbor FreightTools can supply UL listed and outdoor

rated cords in multiple AWG ratings if needed.

AWG RATING CHART

CORD LENGTH

25’ 50’ 75’ 100’ 125’ 150’ 175’ 200’

AMPS AWG AWG AWG AWG AWG AWG AWG AWG

0-10.0

18 18 16 16 14 14 12 12

10.1-13.0

16 16 14 14 14 12 12 12

13.1-15

14 14 12 12 12 12 12 —-

15-18

14 12 12 12 12 12 —- —-

DONOT MODIFY YOUR PLUG IN ANY WAY. IFYOU HAVE ANY DOUBT, CALL AQUALIFIED ELECTRICIAN.

Assembly

Your Jointer will require complete assembly as indicated below. To assist you with assembly and operation

please refer to the Operational Figures and to the Assembly Diagrams and Parts Lists located at the end of

thismanual.

Before assembling, remove all traces of the packing grease from the Jointer and wipe all parts thoroughly with

a clean dry cloth. When cleaning do not use acetone, gasoline or paint thinner as these solvents are

dangerous to you and may also cause damage to plastic and rubber parts. Apply a thin coating of automotive

wax to any unpainted surfaces to prevent rust.

Caution!: Consider the weight of the components and take the necessary precautions when lifting.

Assistance may be required during assembly.

#31849 Page 4

The Stand

Step1) Attach the Front Side Plate (#16A) to both of the Side Link Plates (part #19A).

Insert two Screws (#17A) through Front Side Plate and through Side Link

Plate. Slide onWashers (#7A) and Nut (#6A). Tighten into place. Repeat for the other side

-seeFigure 1.

Step 2) Attach the Rear Side Plate (#30A) to each of the Side Link Plates (#19A).

Tighten it into place with two Screws (#17A) and attachWashers (#7A) and Nuts (#6A)

on inside. Repeat for other side-see Figure 1.

Step 3) Set the Crossbeam Plate (#18A) so that it sits on top of each of the Side Link

Plates (#19A). Insert two (2) Screws (#17A) through the Crossbeam Plate (#18A) and Side

Link Plate. Slide onWashers (#7A) and Nuts (#6A). Tighten into place. Repeat for other

end of Crossbeam Plate- see Figure 1.

Step 4) Set the Roof (#1A) on top of the Side Plates. Insert two Screws (#17A) at each

corner. On the inside slide onWasher (#7A) and Nut (#6A). Secure in place-see Figure 1.

Step 5) Attach the foot Bolt (#22A) through the Chassis (#20A) and to the bottom of each corner.

From the top, slide onWasher (#7A) and tighten on Nut (#6A).

Step 6) Set the Jointer on the Stand with the Cutterhead Guard facing the Front SidePlate (#16).

There are two holes for the Bolts (#68-Jointer Assembly) over the Right Protecting Plate (#8A)

and one hole for a Bolt (#68-Jointer Assembly) in the center of the Roof (#1A) above the Left

Protecting Plate (#26A). Slide the Bolt (#68-Jointer Assembly) through the flat Washer

(#67-Jointer Assembly) through the Roof (#1A) and into the Jointer.

Step 7) Attach the Right Tapping Fender (#23A) and the LeftTapping Fender (#27A) to the

Tapping Plate (#25A). Insert Lock Washer (#21A) with the head on the outside of the Stand.

Slide on Washer (#7A) and Nut (#6A). TightenTapping Fenders onto Plate-see Figure 2.

Step8) Attach a Lock Plate (part #24A) to each corner hole and to the top hole in the Left Protecting

Plate (#26A). Make certain that the part of the Lock Plate with the wing is on the outside of

theProtectingPlate-see Figure 2.

Front Side Plate(16A)

Side Link Plate(19A)

Motor (29A)

Rear Side Plate (30A)

Crossbeam Plate (18A)

Roof (1A)

Figure 1

Upright Plate (4A)

#31849 Page 5

Step 9) Attach theTapping Plate (#25A) with Right and Left

Tapping Fenders (#23A & #27A) to the Left Protecting

Plate (#26A). Insert the Screws (#17A) with head on the

outside of the Plate. On the inside, slide onWasher

(#7A) and Nut (#6A)-see Figure 2.

Step 10) Attach the Reinforcing Plate (#3A) to the Roof ( #1A)

on the same side as the Left Protecting Plate

using Screws (#17A),Washers (#7A) and Nuts (#6A).

Step 11) Attach the Upper Link Plate (#2A) to the Roof (#1A)

with Screw (#17A) inserted downward. Slide on

Washer (#7A) and tighten on Nut (#6A)-see Figure 1.

Step12) Slide the Left Protecting Plate (#26A) on and tighten it

into place with six (6) Screws (#17A). Fasten on

theinsidewithWashers(#7A)and Nuts(#6A).

Make certain that the lips at the top of the

Tapping Plate (#25A) are positioned under the

Upper Link Plate (#2A) as in Figure 1.

Step 13) Attach the Motor (#29A) to the Upright Plate (#4A) making certain that the Screws

(#17A) are placed at least half way up the Plate (#4) on the side opposite the lips. You will

have to move the Motor (#29A) later when tensioning the Belt. Secure in position with

Washer (#7A) and Nut (#6A)-see Figure 1.

Step 14) Mount the Upright Plate (#4A) so that it is attached at the top to the Upper Link Plate (#2A)

and at the bottom to the Side Link Plate (#19A). Attach to the Upper Link Plate making sure

that the lips of theTapping Plate (#25A) are sandwiched between the Upper Link Plate (#2A)

and the Upright Plate (#4A).

Step 15) Attach three (3) Lock Plates (#24A) to the Right Protecting Plate (#8A). Slide the Plate

onto the Frame and twist the Lock Plates so that the Right Protecting Plate is securely in

position.

Jointer Assembly

Each of the following part numbers, unless otherwise specified, are from the Jointer Parts List on page 14 and

the Jointer Assembly Diagram on page16.

Step 1) Attach the Belt Cover (#64) to the Stand (#69). Make certain that the Belt (#10) is

in place on the Center Head Pulley (#9). Insert Recessed Screw (#63) through

each foot of the Belt Cover (#64). From underneath, attach Lock Washer (#65) and tighten

into place with Nut (#66).

Adjusting BeltTension

Correct tension is indicated when there is approximately 1" deflection in the Belt (#10)

with slight finger pressure.

Step 1) Loosen the Nuts and Bolts on the Upright Plate (#4A-Stand Assembly). Move the Motor up or

down along the Upright Plate until the correct tension is achieved. Tighten Nuts and Bolts

into place-see Figure 3.

Figure 2

Tapping Plate (#25A)

LeftTapping Fender (#27)

Lock Plate (#24A)

#31849 Page 6

Left Protecting Plate (#26A)

Cutterhead Guard

Warning: Beware of sharp blade when installing the Cutterhead Guard.

Step 1) Inside of the Spring Knob (#37) there is a Spring (#36) which returns the Guard toits position

above the Cutterhead after a cut. To create tension in the Spring, turn the Spring Knob (#37)

before inserting the post. Insert the Postof the Cutterhead Guard (#32) down through the hole

in the InfeedTable (#33)-see Figure 4. When inserting the Post, make sure that the Spring

(#36) is engaged in the slot at the end of the Post. The tension on the Spring (#36) can

be changed by removing the Guard and turning the Spring Knob (#37).

Assembling HandleWheels

Step 1) There is a Handle Wheel (#43) located on each side of the Base (#50). With Adjusting Pole

(#49) inserted into Base (#50), make certain Lock Block (#46) sits on top of the Adjusting Pole.

Insert Bolt (#40) into Washer (#41) and through Handle Wheel (#43). Screw into LockWasher

(#44) and Lock Screw (#45).

Fence and Angle Scale Assembly

Step 1) Insert the Fence Plate (#18) through the hole in the Cross Slide Plate (#19). Insert Washer

(#25) and Nut (#26) onto Bolt (#27). AddWasher and slide Bolt (#27) through Plate (#18).

Attach the Handle Pole (#29) and Socket (#30) over the Nut. Attach Cap (#31) and tighten

into place-see Figures 5, 6 and 7.

Figure 3 Figure 4

Washer (25)

Nut (26)

Socket (30)

Bolt (27)

Figure 5

Jib

Hex Screw (#24)

Figure 6

Handle Pole

(29)

#31849 Page 7

Step2) Flip the square jib so that its end sits against the flat part of the Plate (18)-see Figure 7.

Step 3) Using an Allen Wrench, attach this assembly to the Fence (#11) with the three Hex Screws

(#24)-see Figure 6. Operation

When operating your Jointer, it will be helpful to refer to the Parts List and Assembly Diagram on the last pages

of this manual.

Never force the tool or attachment to do the work of a larger industrial tool. It is designed to do the job better

and more safely at the rate for which it was intended.

Use only wood boards.

Do not force feed your work through the machine. Allow the Jointer to feed at the designated rate of feed.

Note: This tool is specifically designed for the planing of lumber. Before working with any lumber,

check for any foreign materials such as nails, screws, or hard impurities. Also check for loose

knots in the wood. If not cleaned off these may cause damage to the blade or machine.

When feeding your lumber, use Push Blocks to feed the lumber, rather than

using your hands.

Settings and Adjustments

Before adjustments are made, ensure that the machine is SWITCHED OFF AND UNPLUGGED. Also make

sure all locking handles and securing screws are fully tightened when adjustments are complete.

Raising and LoweringTables

Step 1) For both the Infeed Table (#33) and Out FeedTable (#1) loosen the Lock Screw (#45) nearest

theHandleWheel (#43). TurntheHandleWheeluntiltheTable isset at theproperheight.

Once the table is set as desired, tighten down the Lock Screw (#56).

Plate

Jib

Figure 7

#31849 Page 8

FenceAdjustments

The Fence (part #11) is assembled to the front of the InfeedTable (#33). The Fence can be moved across the

Table and can be tilted 45 degrees right or left by using the Handle Pole (#29).

Step 1) To move the Fence (#11) across theTable, turn the Handle Pole (#29) to loosen. Slide the

Socket (#30) over the Nut (#26). Use the Socket (#30) to loosen the Nut (#26). Slide the

Table to its desired position. Tighten the Socket (#30) in place and tighten back down the

Handle.

Step 2) To tilt the Fence (#11), loosen the Handle Pole (#29). Slide the Socket (#30) over the

Cap (#31). Loosen the Cap and tilt the Fence to the desired position. Tighten the Cap (#31)

into place and tighten back down the Handle Pole (#29)-see Figure 6.

Most Common Operations

Jointing cuts or edges as well as Planing are the two most common operations which can be done with your

Jointer. For Jointing, set the fence square with the table. Hold the best face of your work piece firmly against

the fence throughout the feed.

Note: Do not perform jointing on material shorter than 10 “, narrower than 3/4”, or thinner than 1/2".

Planing is similar to jointing except that the workpiece is placed differently. The flat surface of the piece is

placed on the infeed table with the narrow edge of the piece against the fence. Move the piece from the infeed

table, acr0oss the cutterhead to the outfeed table. Always use the push blocks when planing. Never pass your

hands directly over the cutterhead.

Grain Direction

Feeding with the grain is feeding so that the knives travel in the same direction as the slant of the

grain. Please see Figure below.

Grain patterns often have a “V” shape. The point of the “V” should point away from the cutter head while

feeding.

Grain direction can also be determined by running your fingertips over the stock. The stock will be smoother

when your fingertips are moving with the grain.

Occasionally the grain direction reverses in the same piece of wood. For best planing results, it would be better

to cut the board in half so that each section can be planed with the grain.

Knife and Outfeed Table

The knives must be perfectly level with the outfeed table. Make certain that the Jointer is OFF and

that it is UNPLUGGED before making any adjustments.

Step 1) Loosen the Lock Lever and lower the infeed table by pushing the Handle down.

Step 2) Remove the Cutterhead Guard.

Step3) Place a steel straight edge on the outfeed table so that it also covers the cutterhead.

Carefully turn the cutterhead so that the knives are barely touching the straight edge.

Figure 8 - Grain Direction

#31849 Page 9

Step4) If the knife is not aligned at one or both sides, loosen Bolts (60) which hold the Knife Lock Bar

(61). Use a knife setting gauge (not included) to make sure that the knife at each end of the

cutter is the same height. Repeat for the next two (2) knives as is fitting. If the knives are set

to low, this will result in a curve in your wood. If the knives are too high, it may result in a

gougedcutin yourworkpiece.

AdjustingTable Gibs

“Gibs” are adjusted at the factory and should not need adjusting. Adjustments should be made by a qualified

service technician. If adjustment is required, please follow the steps laid out below after unplugging the

electricalconnection.

Step 1) Loosen all the gib adjusting screws, making sure that theTable Lock Screw (#45) is loose.

Step 2) Retighten the gib screws beginning with the lowest first and moving to the top gib. Push up

gently on the outside edge of theTable being adjusted.

Warning: Do not leave the screws too loose. It should take some effort to move theTable up or down.

Removing or Replacing Knives

Make certain that the Jointer is UNPLUGGED and OFF. Adjustments should be made my a qualified service

technician. Be extremely careful when handling the knives! Make certain that the Bars are free of dirt and

debris.

Step 1) Move the Fence (#11) to the rear of the Jointer and remove the Cutterhead Guard.

Step 2) With a wrench, loosen the four (4) Screws (#12) in each knife slot. Remove each Knife (#62)

and the Knife Lock Bars (#61).

Step 3) Replace the Knives (#62) in the groove so that the rear edge of the bevel is 1/16” from the

surface of the Cutterhead.

Step 4) Slide the Lock Bar (#61) into place. Tighten down the Screws (#12) in each slot.

Warning! Knife edges are very sharp. Be very careful when moving knives. Refer to Operator Safety

Instructions at the beginning of this manual.

Step 5) The surface of the Cutterhead and the blade must be parallel, as well as the blade to the Bar.

All three should be parallel to each other.

Step 6) Correct adjustment will ensure that the cutting edge of the knife extends out at

.060" from the cutterhead diameter.

Step 7) Carefully turn the cutterhead, until its round side is showing on top. Place a .060" feeler

gauge on the cutterhead. With a straight edge on the rear table adjust the height of the rear

table to .060".

#31849 Page 10

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