Harbor Freight Tools 42818 User's Manual
Contents
1. Part Description Qty Part Description Qty Part Description Qty 1 Hex Bolt M8 X 75 1 Compression Spring 1 Pointer 2 Rubber Sleeve 1 Tapping Screw Bt4 X 20 4 Hex Lock Set Screw M8 X 30 3 Elbow 1 Pan Head Screw M5 X 20 with washer 2 Hex Lock Set Screw M8 X 30 4 O Ring 1 Handle Set with item 65 1 Hex Lock Net M8 13 5 Wing Bolt M6 X 45 1 Tapping Screw Bt4 X 18 2 Flat Washer 8 6 Pan Head Screw M4 X 10 with washer 1 Strain Relief 1 Turn Base 7 Compression Spring 1 Lock off Switch Button 1 Kerf Board 8 Insulation Washer 1 Handle Set with item 58 1 Screw M4 X 12 9 Ball Bearing 1 Cam 1 Screw M4 X 12 10 Baffle Plate 1 Lock off lever 1 Kerf Board 11 Magnet 1 Compression Spring 1 Pointer 12 Pan Head Screw M6 X 40 with washer 4 Switch 1 Pan Head Screw M5 X 8 with washer 13 Carbon Brush 2 Switch lever 1 Lock Plate 14 Brush Holder Cap 2 Spiral Bevel Gear 1 Pan Head Screw M5 X 12 with washer 15 Nameplate 1 Ring 1 Ball Bearing 16 Motor Housing 1 Bearing Box 1 Pan Head Screw M5 X 8 with washer 17 Pan Head Screw M5 X 8 with washer 2 Ball Bearing 1 Grip 18 ARMATURE ASSEMBLY i Spindle 1 Steel Ball with Item 11 12 amp 22 Bearing Retainer 1 Compression Spring 19 Fan 1 Pan Head Screw M6 X 20 with washer 2 Screw M6 X 10 20 Pan Head Screw M5 X 16 with washer 4 Flange 1 Cap 21 Bearing Retainer2. Periodically wipe down all metal parts with a clean cloth and a light oil Never use solvents to clean plastic parts 4 All motor bearings are factory lubricated and do not require maintenance Adjustments Warning Always disconnect power to the saw before making any adjustments Adjust ments should always be done by a qualified technician Saw Blade Perpendicular to Fence 1 Position the rotating table for a 90 degree cut 2 Loosen the Knob Screw 105 and move the carriage completely back Retighten the Knob Screw Position the cutting arm to the 90 degree bevel stop saw blade vertical Lower the Saw Blade and lock in place gn Place a tri square against the Saw Blade and the Fence If it is not exactly square continue with the adjustment steps Loosen the Hex Bolts 92 directly behind the fence Adjust the fence until it is square with the Saw Blade Check the alignment from the other side of the Saw Blade Readjust if necessary o oND Securely retighten Hex Blots 92 10 Check that the Pointer 122 on the Miter Scale points to zero degrees If is does not loosen its screw and adjust it to point to zero Downward Travel of the Saw Blade 1 Lower the Saw Blade as far as possible Turn the Blade by hand and verify the Blade teeth are not touching any metal surfaces Loosen the Hex Lock Nut 53 counterclockwise to lower the Saw Blade slightly Retighten Hex Lock Nut a AUN Lower the Saw Blade as far
3. 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 contact Guard against electric shock Prevent body contact with grounded surfaces such as pipes radiators ranges and refrigerator enclosures Maintenance For your safety service and maintenance should be performed regularly by a qualified technician Check for damaged parts Before using any tool any part that appears damaged SKU 42818 Page 3 19 20 21 22 10 should be carefully checked to determine that it will operate properly and perform its intended function Check for alignment and binding of moving parts any broken parts or mounting fixtures and any other condition that may affect proper operation Any part that is damaged should be properly repaired or replaced by a qualified technician Do not use the tool if any switch does not turn On and Off properly Replacement parts and accessories When servicing use only identical replacement parts Use of any other parts will void the warranty Only use accessories intended for use with this tool Approved accessories are available from Harbor Freight Tools Do not operate tool if under the influence of alcohol or drugs Read warning labels on prescriptions to determine if your judgment or reflexes are impaired while taking drugs If there is any doubt do not operate the tool Use proper
4. 1 Ring 1 Base 22 Flat Washer 1 Flange 1 Pan Head Screw M5 X 20 with washer 23 Ball Bearing 1 Hex Flange Head Bolt M10 X 20 1 Holder 24 Rubber Ring 1 Guard 1 Slide plate 25 Retaining Ring 1 Center Cover 1 Pin 26 Cord Guard 1 Flat Head Screw M5 1 Hex Socket Set Screw M8 X 30 27 Cord 1 Torsion Spring 1 Shaft of Blade Frame 28 Ring Spring 1 Safety Cover 1 Locking plate 29 Pin 1 Rivet 1 Set pin 30 Compression Spring 1 Bolt 1 Locking shaft 31 Blade Case 1 Hex Flange Head Bolt M8 X 12 1 Y plate 32 Stop Ring 1 Hex Bolt M8 X 30 4 Pin 33 Coupler 1 Guide Edge 1 Arm 34 Bolt M6 1 Screw M6 X 10 1 Bevel knob 35 Rod 1 Ball Spline 1 Cap 36 Label 1 Rear Arm Cover 1 Pan Head Screw M5 X 12 with washer 37 Ring 1 Gasket 1 Lever Holder 38 Flat Washer 1 Bolt 2 Rubber Pin 39 Bolt 1 Seal 1 Hex Nut M10 17 40 Pan Head Screw M4 X 10 with washer 1 Gasket 1 Flat Washer 10 41 Strain Relief 1 Strain Relief 1 Thrust Needle Cage 42 Pan Head Screw M4 X 10 with washer 2 Pan Head Screw M4 X 10 with washer 2 Flat Washer 10 43 Gasket 1 Pan Head Screw M4 X 10 with washer 2 Plate 44 Slide Pipe 1 Leaf Spring 1 Lever Rod 45 Hex Bolt M10 X 130 1 Screw M6 X 33 1 Spring 46 Flat Washer 1 Flat Washer 16 1 Spacer 47 Pipe 1 Retaining Ring 1 Nut 48 Hex Bolt M8 X 30 with washer 1 Front Arm Cover 1 Plate 52 Flat Washer 1 Pan Head Screw M4 X 10 with washer 2 Flange 53 Hex Lock Nut M10 17 1 Bellows 1 Gasket 54 Spring Holder 1 Pan Head Screw M5 X 8 with washer 1 P
5. CHICAGO deri i ey POWwer Tools COMPOUND SLIDE MITER SAW 12 INCH ele 31 42818 ASSEMBLY AND OPERATING INSTRUCTIONS 3491 Mission Oaks Blvd Camarillo CA 93011 Visit our Web site at http Awww harborfreight com Copyright 2002 by Harbor Freight Tools All rights reserved No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools For technical questions and replacement parts please call 1 800 444 3353 Specifications Trew besniprion No loo 2 Lad 68 Strep A 0 15 22 5 30 45 left and right degree miter 3 11 16 D x 12 3 16 L inches at 90 deg front Cutting Capacity to back 1 1 4 D x 12 3 16 L inches at 45 deg front to back Maximum Blade Height 17 7 8 inches _ 90 to 45 degrees right and left miter Saw Plage Tiit Capacity 90 to 45 right and left degrees compound Miter Scale 0 60 degrees in one degree increments Saw Blade 12 inch carbide tipped 100 tooth Push down lock Features Retractable blade guard Single slide bar extension Dust collector bag Set Plate Set Plate Holder Accessories Arbor Nut Wrench Hex Wrench 4 MM Arbor Adaptor 5 8 to 1 Net Weight 53 Ibs Save This Manual You will need the manual for the safety warnings and precautions assembly instructions operating and maintenance procedures parts list and diagram Keep your invoice with this manual Write t
6. Dress properly Do not wear loose clothing or jewelry as they can be caught in moving parts Protective electrically non conductive clothes and non skid footwear are recommended when working Wear restrictive hair covering to contain long hair Use eye and ear protection Always wear ANSI approved impact safety goggles Wear a full face shield if you are producing metal filings or wood chips Wear an ANSI approved dust mask or respirator when working around metal wood and chemical dusts and mists Do not overreach Keep proper footing and balance at all times Do not reach over or across running machines Maintain tools with care Keep tools sharp and clean for better and safer performance Follow instructions for lubricating and changing accessories Inspect tool cords periodically and if damaged have them repaired by an authorized technician The handles must be kept clean dry and free from oil and grease at all times Disconnect power Unplug tool when not in use Remove adjusting keys and wrenches Check that keys and adjusting wrenches are removed from the tool or machine work surface before plugging it in Avoid unintentional starting Be sure the switch is in the Off position when not in use and before plugging in Do not carry any tool with your finger on the trigger whether it is plugged in or not Stay alert Watch what you are doing use common sense Do not operate any tool when you are tired Take caution as some woods
7. Hex Flange Bolt 83 Press in on the Spindle Lock button and retighten the Bolt in a counterclockwise direction with the socket wrench Replace the Safety Cover to its original position and retighten the Hex Bolt A Press down on the saw Handle and verify that the safety Shield moves back properly and that the blade does not touch the Fence or Table Maintenance Replacing the Motor Brushes It may become necessary at sometime to replace the motor brushes when the motor perfor mance decreases or stops working completely The following steps describe their replace ment This procedure should be done by a qualified technician 1 2 Unplug the Power Cord Plug from the electrical outlet Remove the Brush Holder Caps 14 and Carbon Brushes 13 from the Motor Housing 16 Examine the Carbon Brushes If the they are worn past 3 16 inch in length or if the spring or shunt wires are burnt they must be replaced Never replace just one brush If the brushes are only dirty and not worn down you can use a pencil eraser to clean the brush tips Replace the Carbon Brushes 13 and Brush Holder Caps 14 Connect the Power Cord to an electrical outlet and test the saw s operation SKU 42818 Page 10 General Maintenance 1 After use blow table and motor holes clean with an air hose 2 Empty Dust Collector Bag after each use Warning Do not empty Dust Collection Bag around any sparks or flame An explosion could occur 3
8. as possible and turn the Saw Blade It should not touch anything while turning SKU 42818 Page 11 Bevel Stop to 90 Degrees 1 Position saw bevel stop at 90 degrees and loosen bevel Level Rod 156 2 Lower the cutting head and place a Tri square on the surface of the Blade and the left side of the Table If it is not square continue with the next step 3 Push the Bevel Knob and adjust Saw Blade angle until the Saw Blade touches the Left Kerf Plate and is at 90 degrees to Table Retighten Level Rod PLEASE READ THE FOLLOWING CAREFULLY THE MANUFACTURER AND OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY NEITHER THE MANUFACTURER NOR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS QUALI FIED TO REPLACE ANY PARTS OF THE PRODUCT IN FACT THE MANUFACTURER AND OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS AND NOT BY THE BUYER THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO NOTE Some parts are listed and shown for illustration purposes only and are not available indi vidually as replacement parts SKU 42818 Page 12 Parts List
9. e to Base contact The Blade should not contact the turn base in the lowest position Never use hands to secure workpiece The workpiece must be secured firmly against the turn base and guide fence with a vise or clamp during all operations Avoid injuries Never reach around saw blade Be alert when turn the Miter Saw on The blade should not contact the workpiece before switching it on Let the blade reach full speed before cutting SKU 42818 Page 4 11 Make adjustments safely Unplug the power cord before making any adjustments to the Miter Saw or to the workpiece Note Performance of this tool may vary depending on variations in local line voltage Exten sion cord usage may also affect tool performance Warning The warnings cautions and instructions discussed in this instruction manual cannot cover all possible conditions and situations that may occur It must be under stood by the operator that common sense and caution are factors which cannot be built into this product but must be supplied by the operator Unpacking When unpacking check to make sure the following parts are included Assembled Com pound Slide Miter Saw dust collection bag set plate set plate holder arbor nut wrench 4 mm hex wrench and 5 8 to 1 arbor adapter If any parts are missing or broken please call Harbor Freight Tools at the number on the cover of this manual as soon as possible Installation 1 Place the Miter Saw on the solid wor
10. ear so that they almost touch the saw blade teeth Tighten the rear Screws 7 Loosen the Lever Rod 156 and turn the saw blade left and right for bevel cuts and recheck the Kerf Board front and rear settings Readjust if necessary 8 Securely tighten all Screws SKU 42818 Page 6 Preparation to Cut Stock 1 Before cutting stock verify that it fits the base and fence properly and secure in place The photos below show the proper way to lay the stock on the base for cutting These methods will keep the Saw Blade from binding with the stock and keep it from rolling Use the Vertical Clamp to hold the stock in place for cutting 2 Use the appropriate Saw Blade for the type of stock being cut The Saw Blade provided is used for cutting wood Caution The Safety Cover 88 returns to its original position when the cut is completed and the handle is raised Never defeat or remove the Safety Cover BLADE FENCE 3ie RIGHT CORRECT INCORRECT 3 Raise the cutting arm by pushing down slightly on the Handle 65 then pulling out the Arm Release Button See photo on the next page 4 If making a vertical cut verify that the Saw Blade is 90 degrees to the Table Adjust the Saw Blade angle by first loosening the Lever Rod 156 and turn the saw blade left or right so that the bevel scale pointer is set to zero See photo on the next page 5 If making miter cuts raise the Handle 65 fully then loos
11. en the handle Grip 128 Push the handle Grip to adjust the Saw Blade to the desired angle ranging from 0 to 45 degrees left or right positive stops at 0 and 45 degrees When adjusted tighten the handle Grip 128 again Make sure that the Vertical Clamp is clear of the cutting path 6 If making bevel angle cuts raise the Handle 65 fully and loosen the Lever Rod 156 and push down on the Bevel Knob 146 to pass positive stops while moving the Handle and Saw Blade to the desired angle left or right Use the Bevel Scale as a guide Tighten Lever Rod again Caution Check that the Kerf Boards do not touch the Saw Blade Adjust if necessary 7 To slide the cutting arm backward loosen the knob Screw 105 and slide the arm back Tighten the k in ack Tighten the knob Screw again REV 05 04 REV 03 06 SKU 42818 Page 7 Cutting Stock i 2 Plug the Power Cord into the electrical outlet With the workpiece secure turn on the saw by pressing down on the Lock off Switch Button 64 then squeeze the Switch 70 trigger button Lock off Switch Button 64 __ _ Handle 65 Switch 70 Trigger Button B mag b Brush Holder Cap 14 _ Dust Collection Bag Slide Pipe 44 Safety Cover 88 Knob Screw 105 128 L Arm Release Button Bevel Knob 146 Fence Lever Rod 156 _ gt Kerf Boards 121 a
12. he invoice number on the inside of the front cover Keep the manual and invoice in a safe and dry place for future reference Safety Warnings and Precautions WARNING When using tool basic safety precautions should always be followed to re duce the risk of personal injury and damage to equipment Read all instructions before using this tool 1 Keep work area clean Cluttered areas invite injuries 2 Observe work area conditions Do not use machines or power tools in damp or wet locations Don t expose to rain Keep work area well lighted Do not use electrically powered tools in the presence of flammable gases or liquids SKU 42818 Page 2 10 11 12 13 14 15 16 ig 18 Keep children away Children must never be allowed in the work area Do not let them handle machines tools or extension cords Store idle equipment When not in use tools must be stored in a dry location to inhibit rust Always lock up tools and keep out of reach of children Do not force tool It will do the job better and more safely at the rate for which it was intended Do not use inappropriate attachments in an attempt to exceed the tool capacity 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
13. ivot Bracket Note The Vertical Clamp is not listed on this parts list nor shown in the diagrams on the following pages SKU 42818 Page 13 REV 11 02 REV 05 04 Assembly Drawing Note The Vertical Clamp is not shown SKU 42818 Page 14 REV 11 02 REV 05 04 Note The Vertical Clamp is not shown SKU 42818 Page 15 REV 05 04
14. kbench capable of supporting the weight of the unit and all work pieces Do not carry the unit by the Handle or misalignment of the components may occur 2 Using a pencil mark through the saw Base 133 holes onto the workbench 3 Drill two 3 8 inch holes into the workbench for the mounting hardware 4 Secure the unit to the workbench using bolts nuts lock washers not supplied Check and tighten all bolts and adjustment screws Bolts not wie d Insert the Dust Collection Bag Operation WARNING Some dust created by power sanding sawing grinding drilling and other construction activities contain chemicals known to the State of California to cause cancer birth defects or other reproductive harm some examples of these chemicals are e Lead from lead based paints e Crystalline silica from bricks and cement or other masonry products e 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 such as those dust masks that are specially de signed to filter out microscopic particles California Health amp Safety Code 25249 5 et seq SKU 42818 Page 5 Auxiliary Wood Fence To help avoid small short cut pieces of stock from being caught by the blade or shot off it is recommended to mount an auxiliary wood fe
15. mp 118 E Handle Grip 128 Miter Scale Bevel Scale Vertical Clamp r When the Saw Blade comes to full speed bring the Saw Blade down and begin cutting slowly through the stock without stopping Warning Avoid personal injury Do not disable the Saw Blade Safety Cover 88 Keep fingers and hands away from the moving blade 4 When the cut is finished release the Switch 70 trigger button Wait for the Saw Blade to stop turning before reaching for the cut stock 5 When you are finished using the saw press the cutting head down until it locks into position Unplug the Power Cord from the electrical outlet Pull out the Lock off Switch Button 64 and store in a secure place This prevents unauthorized operation Slide Cutting To cut larger pieces of stock follow these steps 1 Secure the workpiece to the table and fence Loosen the Knob Screw 105 so that the carriage can slide freely Raise the cutting arm by pushing down slightly on the Handle then pulling out the Arm Release Button SKU 42818 Page 8 Pull the carriage all the way forward with the Handle 65 Turn on the saw by pressing down on the Lock off Switch Button 64 then squeeze the Switch 70 trigger button When the Saw Blade comes to full speed bring the Saw Blade down and begin cutting slowly down through the stock until the Saw Blade is completely lowered Then begin pushing the Handle back toward the fence Caution Whenever perfo
16. nce to the saw s metal fence 1 Cuta 1 2 inch thick piece of wood to match the height and length of the existing fence 2 Mount the wood fence to the metal fence using flathead screws and nuts two screws on each side of the fence The wood fence should rest on the table Screws should be countersunk into the wood Hardware and wood not supplied 3 Start the saw and make a 90 degree cut all the way through the auxiliary wood fence The saw can now be safely used to cut small pieces of stock at 90 degrees to the table Positioning the Kerf Boards The Kerf Boards 118 and 121 located in the Turn Base 117 are factory adjusted so that the saw blade does not contact them when the saw blade is lowered during a cut See the illustration below If the saw blade touches either Kerf Board from any angle adjustment is necessary ST Saw Blade y Screws 119 and 120 r Carbide Tip Kerf Board 121 L Kerf Board 118 1 Unplug the Line Cord from the electrical outlet Loosen four Screws 119 and 120 front and back Loosen the Knob Screw 105 so that the saw blade carriage can move back and forth A oO DN Lower the saw blade all the way down in between the Kerf Boards and pull the Carriage forward 5 Adjust the front ends Kerf Boards so that they almost touch the saw blade teeth Tighten the front Screws 6 Push the Carriage all the way back toward the guide Fence and adjust the Kerf Boards r
17. rming a slide cut the cut must be done from front to back Otherwise the workpiece may be forced out of the clamps and kick back Kick back of the workpiece could cause injury 7 When the cut is finished release the Switch 70 trigger button Wait for the Saw Blade to stop turning before reaching for the cut stock Replacing the Saw Blade 1 D aago RN Blade Case 31 Hex Wrench Unplug the Power Cord Plug from the electrical outlet Loosen Hex Bolt A See illustrations below Push up on the right side of the Safety Cover 88 releasing it from around the Bolt Push the Shield assembly out of the way of the Blade Case 31 Press in on the Shaft Lock Button See illustration on the next page Place a socket wrench on the Hex Flange Bolt 83 and turn clockwise until the Bolt and Flange can be removed Spindle 77 Inner Flange 80 Ring 81 Outer Flange 82 Safety Cover 88 Hex Flange Bolt 83 Hex Bolt A SKU 42818 Page 9 Shaft Lock Button Hex Flange Bolt 83 Socket Wrench Remove the existing Saw Blade and replace with another 12 inch blade The new Saw Blade has an arrow on it that must be pointing in the same direction as the large arrow on the outside of the Blade Case 31 Caution Never use saw blades larger or smaller in diameter than 12 inches and rated less than 5000 RPM operation 8 9 10 Replace the Outer Flange 82 and
18. size and type extension cord If an extension cord is required it must be of the proper size and type to supply the correct current to the tool without heating up Otherwise the extension cord could melt and catch fire or cause electrical damage to the tool This tool requires use of an extension cord of 0 to 15 amps capability up to 50 feet with wire size rated at 14 AWG Longer extension cords require larger size wire If you are using the tool outdoors use an extension cord rated for outdoor use Signified by WA on the jacket Pacemaker safety warning People with pacemakers should consult with their physician s before using this product operation of equipment in close proximity to a heart pacemaker could cause interference or failure of the pacemaker Safety Precautions when using a Compound Slide Miter Saw Do not disable blade guard Do not saw without proper blade guard in place Examine blade before using Before each use examine blade for chips cracks or other damage Do not use if damaged Do not use without first mounting saw to a workbench Check for tightness on all saw adjustments before using Keep hands away from moving saw blade If the workpiece to be cut is less than 4 inches long do not hold with your hand use a clamp Do not remove jammed or cutoff pieces until the saw blade has stopped and the Line Cord is unplugged Cut only the proper type of material Never cut ferrous metals or masonry Avoid Blad
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