RIDGID R4120 Operator'S Manual Download Page 5

5

SPECIFIC SAFETY RULES

 

NEVER hand hold a workpiece that is too small to be 
clamped. Keep hands clear of the cutting area.

 

NEVER reach behind, under, or within three inches of the 
blade and its cutting path with your hands and fingers for 
any reason.

 

NEVER reach to pick up a workpiece, a piece of scrap, 
or anything else that is in or near the cutting path of the 
blade.

 

AVOID  AWKWARD  OPERATIONS  AND  hAND 
POSITIONS  
where  a  sudden  slip  could  cause  your 
hand to move into the blade. 

ALWAYS make sure you 

have  good  balance. 

NEVER  operate  your  miter  saw 

on the floor or in a crouched position.

 

NEVER stand or have any part of your body in line with 
the path of the saw blade.

 

ALWAYS release the power switch and allow the saw blade 
to stop rotating before raising it out of the workpiece.

 

DO NOT TURN ThE MOTOR SWITCh ON AND OFF 
RAPIDLY.  
This  could  cause  the  saw  blade  to  loosen 
and  could  create  a  hazard.  Should  this  ever  occur, 
stand  clear  and  allow  the  saw  blade  to  come  to  a 
complete  stop.  Disconnect  your  saw  from  the  power 
supply and securely retighten the blade bolt.

  IF  ANY  PART  OF  ThIS  MITER  SAW  IS  MISSING  or 

should  break,  bend,  or  fail  in  any  way,  or  should  any 
electrical component fail to perform properly, shut off  
the power switch, remove the miter saw plug from the 
power source and have damaged, missing, or failed parts 
replaced before resuming operation.

 

IF ThE POWER SUPPLY CORD IS DAMAGED, it must 
be replaced only by the manufacturer or by an authorized 
service center to avoid risk.

 

ALWAYS STAY ALERT! Do not allow familiarity (gained 
from frequent use of your saw) to cause a careless mis-
take. 

ALWAYS REMEMBER that a careless fraction of 

a second is sufficient to inflict severe injury.

 

MAKE SURE ThE WORK AREA hAS AMPLE LIGhTING 
to see the work and that no obstructions will interfere with 
safe operation 

BEFORE performing any work using your 

saw.

 

ALWAYS TURN OFF ThE SAW before disconnecting it 
to avoid accidental starting when reconnecting to power 
supply. 

NEVER leave the saw unattended while connected 

to a power source.

 

ThIS TOOL should have the following markings:

  a)  Wear eye protection.
  b)  Keep hands out of path of saw blade.
  c)  Do not operate saw without guards in place.
  d)  Do not perform any operation freehand.
  e)  Never reach around saw blade.
  f)  Turn off tool and wait for saw blade to stop before 

 

moving workpiece or changing settings.

  g)  Disconnect  power  (or  unplug  tool  as  applicable) 

 

before changing blade or servicing.

  h)  No load speed.

 

ALWAYS carry the tool only by the carrying handle.

 

AVOID direct eye exposure when using the laser guide.

 

ThIS SAW CAN TIP OVER if the saw head is released 
suddenly and the saw is not secured to a work surface. 
ALWAYS secure this saw to a stable work surface before 
any use to avoid serious personal injury.

 

USE ThIS SAW TO CUT WOOD, WOOD PRODUCTS, 
AND SOME PLASTICS ONLY. DO NOT CUT METALS, 
CERAMICS OR MASONRY PRODUCTS.

 

SAVE  ThESE  INSTRUCTIONS.  Refer  to  them  
frequently  and  use  to  instruct  other  users.  If  you  loan 
someone this tool, loan them these instructions also.

 

WARNING

:

 

Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals 
known 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, and 

 

•  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 designed to filter out microscopic particles.

Summary of Contents for R4120

Page 1: ...gineered and manufactured to our high standard for dependability ease of operation and operator safety When properly cared for it will give you years of rugged trouble free performance WARNING To redu...

Page 2: ...Needed 13 Loose Parts 13 Assembly 14 22 Operation 23 31 Adjustments 32 Maintenance 33 34 Warranty 35 Parts Ordering Service 36 INTRODUCTION This tool has many features for making its use more pleasan...

Page 3: ...GLASSES WITH SIDE SHIELDS Everyday eyeglasses have only impact resistant lenses they are not safety glasses GENERAL SAFETY RULES SECURE WORK Use clamps or a vise to hold work when practical it is safe...

Page 4: ...OL WHEN ANY ROTATiNG COM PONENT IS IN CONTACT WITH THE WORKPIECE DO NOT operate A tool while under the influence of drugs alcohol or any medication When servicing use only identical replacement parts...

Page 5: ...he work and that no obstructions will interfere with safe operation BEFORE performing any work using your saw ALWAYS TURN OFF THE SAW before disconnecting it to avoid accidental starting when reconnec...

Page 6: ...peed orbits etc per minute Do not expose to rain or use in damp locations To reduce the risk of injury user must read and understand opera tor s manual before using this product Eye Protection Precaut...

Page 7: ...h can result in severe eye damage Before beginning power tool operation always wear safety goggles or safety glasses with side shields and a full face shield when needed We recommend Wide Vision Safet...

Page 8: ...e check the power supply EXTENSION CORDS When using a power tool at a considerable distance from a power source be sure to use an extension cord that has the capacity to handle the current the product...

Page 9: ...dropped into the blade or being placed inadvertently in contact with the blade Workpiece or Material The item on which the operation is being done Worktable Surface where the workpiece rests while pe...

Page 10: ...ter at 45 Bevel 0 Maximum nominal lumber sizes 2 x 6 Cutting Capacity with Miter at 0 Bevel 45 Maximum nominal lumber sizes 2 x 8 Cutting Capacity with Miter at 45 Bevel 45 Maximum nominal lumber size...

Page 11: ...stops at 3 and 48 BEVEL LOCK KNOB The bevel lock knob securely locks your compound miter saw at desired bevel angles BLADE wrench storage A blade wrench is packed with this saw One end of the wrench...

Page 12: ...made of shock resistant see through plastic that provides protection from each side of the blade It retracts over the upper blade guard as the saw is lowered into the workpiece SPINDLE LOCK BUTTON Se...

Page 13: ...nsion Socket Head Screw 2 Laser Guide Blade Bolt Blade Operator s Manual not shown Fig 7 WARNING The use of attachments or accessories not listed might be hazardous and could cause serious personal in...

Page 14: ...alteration or modification is misuse and could result in a hazardous condition leading to possible serious personal injury WARNING Do not connect to power supply until assembly is complete Failure to...

Page 15: ...ocket head screw and washer into the two holes in the side of the miter saw base Lay a framing square flat on the table extension and saw base Place the square against the fence on the table extension...

Page 16: ...r to beginning any cutting operation to reduce the risk of serious personal injury The work clamp provides greater control by clamping the workpiece to the fence It also prevents the workpiece from cr...

Page 17: ...er blade washer or laser guide where they contact the blade WARNING If inner blade washer has been removed replace it before placing blade on spindle Failure to do so could cause an accident since bla...

Page 18: ...to move the workpiece while making a cut Always keep hands outside the No Hands Zone Make several practice cuts on different styles and thick ness of material To Remove Your Mark Position the laser li...

Page 19: ...W BLADE TO THE FENCE See Figures 17 22 Unplug the saw Pull the saw arm all the way down and lock in transport position Lift the miter lock lever Rotate the miter table until the pointer on the miter s...

Page 20: ...Fig 20 Loosen the socket head screws that secure the fence to the miter table See Figure 18 Rotate the fence left or right until the saw blade is parallel with the square Retighten the socket head scr...

Page 21: ...square as shown in figures 24 and 25 adjustments are needed Loosen the bevel lock knob Usingthebladewrench loosenthebevelstopadjustment screw and slide the bevel stop left or right as needed to bring...

Page 22: ...f or if there is play in the pivot joints have saw repaired at your nearest AUTHORIZED SERVICE CENTER Bevel Pivot Adjustment The compound miter saw should bevel easily by loosening the bevel lock knob...

Page 23: ...ithout checking for interference between the blade and the miter fence Damage could result to the blade if it strikes the miter fence during operation of the saw Failure to heed this warning can also...

Page 24: ...d place the convex side against the fence If the concave edge of a board is placed against the fence the board could collapse on the blade at the end of the cut jamming the blade See Figures 36 37 Whe...

Page 25: ...with one edge securely against the fence If the board is warped place the convex side against the fence If the concave edge of a board is placed against the fence the board could collapse on the blade...

Page 26: ...on the miter scale NOTE You can quickly locate 0 15 22 5 31 6 and 45 left or right by spinning the miter thumbwheel up The lock plate will seat itself in one of the positive stop notches located in t...

Page 27: ...saw and miter table during the cutting operation Use the work clamp to secure the workpiece NOTE When making a compound miter cut as shown in figure 32 it may be necessary to adjust or remove the sli...

Page 28: ...2 B 11 60 M 28 48 B 9 85 M 24 35 B 8 53 M 21 27 B 7 52 M 18 88 B 6 72 M 16 98 B 6 07 M 33 36 B 14 38 M 27 62 B 12 20 M 23 56 B 10 57 M 20 58 B 9 31 M 18 26 B 8 31 M 16 41 B 7 50 M 32 18 B 17 09 M 26 5...

Page 29: ...62 33 85 31 17 33 53 30 73 33 19 30 30 32 85 29 86 32 51 29 43 32 17 29 00 31 82 28 58 31 48 28 16 31 13 27 74 30 78 27 32 30 43 26 91 30 08 26 50 29 73 26 09 29 38 25 69 29 02 25 29 28 67 24 89 28 3...

Page 30: ...together equal exactly 90 Most crown molding has a top rear angle the section that fits flat against the ceiling of 52 and a bottom rear angle the section that fits flat against the wall of 38 Laying...

Page 31: ...onal injury never position the concave edge of bowed or warped material against the fence Bevel Angle Type of Cut Setting Left side inside corner 1 Top edge of molding against fence 2 Miter table set...

Page 32: ...score the wood Raise the saw arm and unplug the saw Lift and hold the lower blade guard Rotate the blade by hand until you can push and hold the laser button and the laser mark is near the center of t...

Page 33: ...alified service technician at an authorized service center to avoid risk of per sonal injury Some areas will require infrequent lubrications You will need to apply Automotive oil directly to the slide...

Page 34: ...5 volt and 100 mAh milliampere hour minimum number 76 series or equivalent When replacing the batteries the laser guide should be thoroughly cleaned Use a soft paintbrush or similar device to remove...

Page 35: ...at www ridgid com When requesting warranty service you must present the original dated sales receipt The authorized service center will repair any faulty workmanship and either repair or replace any p...

Page 36: ...center nearest you please call 1 866 539 1710 or visit us online at www ridgid com The model number of this tool is found on a plate attached to the motor housing Please record the serial number in t...

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