Craftsman 137.21241 Maintenance, Replacing Carbon Brushes FIG. DD, Lower Blade Guard

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MAINTENANCE

MAINTENANCE

!DANGER

To avoid injury, 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.

!WARNING

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

!WARNING

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. DD)

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). Remove the cap cautiously, because it is springloaded. 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: To reinstall the same brushes, first make sure the brushes go back in exactly the way they came out. This will avoid a break-in period that reduces motor performance and increases wear.

Fig. DD

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. Develop a regular check to make sure the lower guard is working properly. Clean the lower guard of any dust or buildup with a damp cloth.

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

!WARNING

When cleaning the lower guard, unplug the saw from the power source receptacle to avoid unexpected startup.

EMPTYING SAWDUST BAG

Periodically, sawdust will accumulate under the work table and base. This could cause difficulty in the movement of the worktable when setting up a miter cut. Frequently blow out or vacuum up the sawdust.

!WARNING

If blowing sawdust, wear proper eye protection to keep debris from blowing into eyes.

LUBRICATION (FIG. EE)

All the motor bearings in this tool are lubricated with a sufficient amount of high grade lubricant for the life of the unit under normal operating conditions; therefore, no further bearing lubrication is required.

Lubricate the following as necessary:

Chop pivot: Apply light machine oil to points indicated in illustration.

Chop and Central pivot: Apply light machine oil to points indicated in illustration.

Fig. EE

Chop and central pivot

Chop pivot

2

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Contents Sears, Roebuck and Co., Hoffman Estates, IL60179 USA Table of Contents WarrantyProduct Specifications Symbols Shown below are some of the symbols you may seeProhibition Support and Clamp WorkPower Tool Safety 24. ! Danger Never Leave the Tool RunningCompound Miter SAW Safety Specific Safety Instructions for this Compound Miter SAWKeep the Motor AIR Slots Clean and free of chips or dust Power Supply and Motor SpecificationsElectrical Requirements and Safety Grounding InstructionsRecommended Accessories AccessoriesCarton Contents Know Your Compound Miter SAW Glossary of Terms Compound Miter SAW TermsWoodworking Terms Assembly and Adjustments Assembly InstructionsAssemble Stand FIG. A-1, A-2, A-3 Assemble Miter SAW to Stand FIG. A-4Installing the Miter Handle FIG. B Installing the Dust BAG FIG. DInstalling the Extension Wings Cutting Head FIG. CTo Install the Rear Extension Stay FIG. F Installing the HOLD-DOWN Clamp Assembly FIG. GRemoving or Installing the Blade Inserting and Replacing the Laser Batteries FIG. HFig. J Adjustment Instructions Adjusting Fence Squareness FIG. LMiter Scale FIG. M Cutting ARM TravelBevel Stop Adjustment FIG. O, P, Q Mounting the Miter SAW FIG. R, STo avoid injury from unexpected saw movement Avoid Direct EYE Contact Adjustments Equirements and Safety Before Each USE Inspect Your SAWKeep Your Work Area Clean OperationDress for Safety When SAW is RunningPlan Your Work Inspect Your WorkpieceBody and Hand Position FIG. U Turning SAW on FIGBefore Leaving the SAW Miter CUT FIG. W Bevel CUT FIGCompound CUT FIG. Y Cutting Bowed Material FIG. ZBevel/Miter Settings Cutting Base Molding FIG. AACutting Crown Molding FIG. BB, CC Maintenance Replacing Carbon Brushes FIG. DDLower Blade Guard Emptying Sawdust BAGTroubleshooting Guide ProtectionParts List Parts List for SAW SchematicSchematic for SAW 10 in. Compound Miter SAW Model noParts List and Schematic for Motor Parts List and Schematic for Stand QTYRepair Protection Agreements Here’s what the Repair Protection Agreement* includesGet it fixed, at your home or ours
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