Craftsman 351.21 4300 Specifications, Operating SAW Controls, Removing Blade

Page 6

SPECIFICATIONS

Depth

of throat

.............................

18"

Maximum depth

of cut

10s/4''

Table size

23% x 21%"

Table

tilt

-15 to

+15 °

Wheel

diameter

............................

18"

Blade

length

 

140"

Blade

width

1/8to %"

Blade

speeds ....

infinitely

variable from 80 to 385 FPM

Overall dimensions

75 x 37

x 30"

Shipping weight

........................

1012 Ibs

Dust collection port

4"

CAUTION: Always observe the following safety precautions:

Make sure that blade guides and thrust bearings are positioned and adjusted correctly to prevent side- ways and rearward movement of the blade. Adjust upper guide to just clear workpiece.

Check to make sure blade is tensioned and tracking properly. Do not over tension the blade in order to prevent premature blade wear and breakage. Avoid

under tensioning to eliminate back and forth, side to side blade movement as it cuts.

Use proper blade and speed for the cutting operation.

After turning saw on, allow blade to come to full speed before attempting any cutting operation.

Support workpiece properly and use a smooth steady feed to guide work through the cut. Use push sticks or push blocks when required.

Keep hands away and out of line with moving parts.

Always wear eye protection.

OPERATING SAW CONTROLS

Refer to Figures 6 and 7.

Band saw control panel has three functional operations:

ON - Green color push button that energizes the magnetic contactor to start the band saw.

OFF - Red color push button that deenergizes the magnetic contactor to stop the band saw. To restart the saw, turn the knob to reset and depress the ON button.

KEY - Key switch locks machine to prevent unauthorized use.

Key

OffOn

÷

Figure 6 - Band Saw Control

The control panel for the blade welder is shown in Figure 7. The welding circuitry is energized independent of the band saw circuitry. To operate the welder, plug in the line cord to a proper power source.

CAUTION: Do not operate the band saw and the welder at the same time.

Anneal

Button

 

Weld

Pressure

Weld

Button

--

-- Adjustment

 

 

 

 

 

 

Knob

 

Movable Jaw

--

cTD,

 

 

 

 

Stationary

 

 

 

Jaw

 

Grinder

Switch

-

....Jaw

Clamping

Handles

 

 

 

@@

Figure 7 - Blade Welder Control

REMOVING BLADE

Refer to Figures 15 and 16.

WARNING: Disconnect band saw from power source when changing or adjusting blades. Wear leather gloves when handling band saw blades. Never wear gloves when operating saw.

Turn handwheel (Figure 15, Key No. 38) counter- clockwise. This lowers the idler wheel (Figure 15, Key No. 5) and relieves tension in blade.

Remove blade guard (Figure 16, Key No. 39) by loosening screws (Figure 16, Key No. 49).

Pull handle (Figure 15, Key No. 69) to open upper and lower doors (Figure 15, Key Nos. 36 and 67).

Be careful, blade may spring from saw.

Remove blade from wheels and guide it out through table slot.

INSTALLING BLADE

Although many of the adjustments may not be altered when blade is removed, every adjustment should be checked prior to using a newly installed blade.

Follow safety precautions every time saw is operated.

Make sure blade teeth are pointing down towards table. Turn blade inside out if necessary.

Slip new blade into table slot and over upper and lower blade wheels and center blade on blade wheels. Slide

blade in between blade guides. Replace table stud. Replace blade guards after blade guide adjustment.

Tension and track blade as described in the following sections.

6

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Contents Craftsman ++ Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.ABe Prepared for JOB ONE-YEAR Full Warranty on Craftsman Professional ToolKnow HOW to USE Tool Prepare Work Area for JOBMount RIP Fence MotorRPM Power Source Grounding InstructionsExtension Cords Electrical ConnectionsSpecifications Operating SAW ControlsRemoving Blade Tracking Blade Adjusting Blade GuidesTensioning Blade Blade Speed and Type SelectionThickness Material Changing Blade SpeedContour Cutting Adjusting Table AngleUsing RIP Fence Chip BlowerTooth Spacing Blade WeldingGrinding Blade Clean Welder JawsBlade Annealing Anneal Blade After GrindingSymptom Possible CausesCorrective Action Possible Causes Corrective ActionModel 351.21 KEY Description QTY KEY NO. Part noReplacement Parts Illustration for Welder KEY DescriptionReplacement Parts Illustration for Wheels and Speed Handle KEY NO. Part no Description QTYReplacement Parts Illustration for Table ModelQTY Description Replacement Parts Illustration for Motor and Blade Drive Description QTY Matter Who Made It, no Sold Parts Repair