Craftsman 137.21239 Maintenance, Replacing Carbon Brushes FIG. JJ, Lower Blade Guard

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MAINTENANCE

MAINTENANCE

!WARNING

Never put lubricants on the blade while it is spinning.

!WARNING

●To avoid ﬁre or toxic reaction, never use gasoline, naphtha acetone, lacquer thinner or similar highly volatile solvents to clean the miter saw.

●To avoid injury from unexpected starting or electrical shock, unplug the power cord before working on the saw.

●For your safety, this saw is double insulated. To avoid electrical shock, ﬁre or injury, use only parts identical to those identiﬁed in the parts list. Reassemble exactly as the original assembly to avoid electrical shock.

REPLACING CARBON BRUSHES (FIG. JJ)

Replace both carbon brushes when either has less than 1/4 in. length of carbon remaining, or if the spring or wire is damaged or burned. To inspect or replace brushes, ﬁrst unplug the saw. Then remove the black plastic cap (1) on the side of the motor (2). Carefully remove the spring-loaded cap. Then pull out the brush and replace. Replace for the other side. To reassemble, reverse the procedure.

The ears on the metal end of the assembly go in the same hole the carbon part ﬁts into. Tighten the cap snugly, but do not overtighten.

NOTE: When reinstalling the same brushes, put them back in the way they came out. This will avoid a break-in period that reduces motor performance and increases wear.

Fig. JJ

2

1

LOWER BLADE GUARD

Do not use the saw without the lower blade guard. The lower blade guard is attached to the saw for your protection. Should the lower guard become damaged, do not use the saw until the damaged guard has been replaced. Check regularly to make sure the lower guard is working properly. Clean the lower guard of any dust or buildup with a damp cloth.

!WARNING

●Do not use solvents on the guard. They could make the plastic “cloudy” and brittle.

●When cleaning the lower guard, unplug the saw from the power source receptacle to avoid unexpected start-up.

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Contents Sears, Roebuck and Co., Hoffman Estates, lL 60179 USA Table of Contents Warranty Product SpecificationsMotor Blade SizeProhibition SymbolsSupport and Clamp Work Power Tool Safety USE Proper ExtensionAlways Wear EYE Wear a Face Mask or DustDisconnect Tools from Reduce the Risk24. ! Danger People Compound Miter SAW Safety Power Supply and Motor Specifications Electrical RequirementsElectrical Requirements cont’d Motor Safety Protection ImportantDouble Insulated Be sure your extension cord is Guidelines for Extension CordsUse a separate electrical circuit Recommended Accessories Accessories and AttachmentsAccessories Tools Needed for Assembly Supplied Not supplied Blade WrenchHex Key Combination Square Must be TrueCarton Contents Know Your Sliding Miter SAW Glossary of Terms Instruction or OWNER’SWoodworking Terms Revolutions PER Minute RPMAssembly and Adjustments Estimated Assembly Time 5 10 minutesInstalling the Miter Handle FIG. a Unlocking the Slide Carriage FIG. BInstalling the Exhaust Port and the Dust BAG FIG. E Installing the HOLD-DOWN Clamp FIG. F and GRemoving and Installing the Table Insert FIG. H LockingFig. H Mounting the Miter SAW FIG. I, JRemoving or Installing the Blade For portable use, placeInstalling Blade FIG. K, L, M Fig. MLaser Beam Class II Laser ProductBevel Pointer Adjustment Fig. O Bevel Adjustment Fig. PMiter Angle Adjustment FIG. Q Miter Scale Indicator Adjustment FIG. QSetting Cutting Depth FIG. S Adjusting Fence Squareness FIG. RAdjusting Cutting Depth FIG. S Sliding the Rear Extension Support BAR FIG. T Fig. TRequirements and Safety Before Each USE Inspect Your SAW AdjustmentsOperation Keep Your Work Area Clean Plan Your WorkDress for Safety Inspect Your WorkpieceDo not OVER-REACH Never cut freehandWhen SAW is Running Body and Hand Position FIG. U Finishing a cutBefore freeing jammed material Basic SAW OperationsSliding Fence Sliding Fence & Remove Sliding Fence FIG. WSliding Carriage System FIG Miter CUT FIG. Y Before Leaving the SAWBevel CUT FIG. Z Compound CUT FIG. BB Bevel Stop for Crown Molding FIG. AATo Slide Cut Wide Boards Fig. CC Fig. DD Fig. CCAuxiliary Wood Fence FIG. FF Cutting Base Molding FIG. GGBevel/Miter Settings Only When the Angle Between the Walls EqualsCutting Crown Molding FIG. HH Equal exactlyCrown Molding Chart Compound Miter sawMaintenance MaintenanceReplacing Carbon Brushes FIG. JJ Lower Blade GuardLubrication FIG. KK SawdustCentral pivot of plastic guard Use Troubleshooting Guide EYE Protection Parts List Schematic a Parts List for SAW Schematic B Schematic B Parts List for Motor Page Get it fixed, at your home or ours