PRO-POINT 8987646 2-Speed Sliding Miter Saw User Manual

: June 5, 2024
: PRO POINT

PRO-POINT 8987646 2-Speed Sliding Miter Saw

PRO-POINT-8987646-2-Speed-
Sliding-Miter-Saw-PRODCUT

SPECIFICATIONS

Cutting Capacity (Table Angle/Saw Angle)	0°/90°	13-5/16 x 3-1/2 in.

0°/45° 13-5/16 x 1-3/4 in.
45°/0°| 9-3/8 x 3-1/2 in.
45°/45° 9-3/8 x 1-3/4 in.
Voltage Rating| AC 120V

Voltage Rating AC 120V
Amperage Rating 15A
Frequency Rating 60 Hz
Horsepower 2-7/16 HP
No Load Speed (metal/wood) 3,200 /4,500 RPM
Arbor Size 1-3/16 in.
Bevel Capacity 45°
Bevel Type Single
Material Aluminum/Steel
Cord Size (AWG) 2C x 14
Cord Type PVC
Cord Length 6-1/2 ft
Dust Collection Yes
Weight 30.8 lb
Workpiece Materials (requires correct saw blade) Wood, MDF, chipboard, plywood, blockboard, hardboard, plastic, nonferrous metals and 3 mm mild steel.

INTRODUCTION

The sliding mitre saw has an adjustable saw head that can pivot from 90° to 45°. The rotary table can move up to 45° left or right. The mitre saw has a work light LED, a laser guide and two speeds for either cutting through metal or wood.

SAFETY

WARNING! Read and understand all instructions before using this tool. The operator must follow basic precautions to reduce the risk of personal injury and/or damage to the equipment.

HAZARD DEFINITIONS

Please familiarize yourself with the hazard notices found in this manual. A notice is an alert that there is a possibility of property damage, injury or death if certain instructions are not followed.This notice indicates an immediate and specific hazard that will result in severe personal injury or death if the proper precautions are not taken. This notice indicates a specific hazard or unsafe practice that could result in a serious injury if the proper precautions are not taken. This notice indicates a potentially hazardous situation that may result in minor or moderate injury if proper practices are not taken. This notice indicates that a specific hazard or unsafe practice will result in equipment or property damage, but not personal injury.

WORK AREA

Operate in a safe work environment. Keep your work area clean, well-lit and free of distractions. Place lights so you are not working in a shadow.
Keep anyone not wearing the appropriate safety equipment away from the work area.
Store unused tools properly in a dry, safe and secure location to prevent rust, damage or misuse.
Do not install or use in the presence of flammable gases, dust or liquids.

PERSONAL SAFETY

WARNING! Wear personal protective equipment approved by the Canadian Standards Association (CSA) or American National Standards Institute (ANSI).

PERSONAL PROTECTIVE EQUIPMENT

Always wear impact safety goggles that provide front and side protection for the eyes. Eye protection equipment should comply with CSA Z94.3-07 or ANSI Z87.1 standards based on the type of work performed.
Wear the appropriate type of full-face shield in addition to safety googles, as the work can create chips, abrasive or particulate matter.
Wear gloves that provide protection based on the work materials or to reduce the effects of tool vibration.
Do not wear gloves when operating a tool that can snag the material and pull the hand into the tool.
Wear protective clothing to protect eyes and skin from contact with sprayed materials.
Non-skid footwear is recommended to maintain footing and balance in the work environment
Wear the appropriate rated dust mask or respirator. Wear a NIOSH approved respirator when working on materials that produce hazardous fumes, dust or particulate matter.
The air source used with this tool may cause hearing damage. Wear ear protection gear to eliminate or reduce the noise.

PERSONAL PRECAUTIONS
Control the tool, personal movement and the work environment to avoid personal injury or damage to tool.

Do not operate any tool when tired or under the influence of drugs, alcohol or medications.
Avoid wearing clothes or jewelry that can become entangled with the moving parts of a tool. Keep long hair covered or bound.
Do not overreach when operating a tool. Proper footing and balance enables better control in unexpected situations.
Support the workpiece or clamp it to a stable platform. Holding the workpiece by hand or against your body may lead to personal injury.A
Securely hold this tool using both hands. Using a tool with only one hand can result in loss of control.

SPECIFIC SAFETY

WARNING!
DO NOT let comfort or familiarity with product (gained from repeated use) replace strict adherence to the tool safety rules. If you use this tool unsafely or incorrectly, you can suffer serious personal injury.

DANGER!
When the tool is in operation, keep hands away from the saw blade and the area it is being applied to. Failure to follow this warning will result in amputation, serious personal injury or death

WARNING!
Some surfaces contain materials which can be toxic. When working on materials that may contain lead, asbestos, copper chromium arsenate or other toxic materials, extra care should be taken to avoid inhalation and minimize skin contact.

Use the correct tool for the job. This tool was designed for a specific function. Do not modify or alter this tool or use it for an unintended purpose.
Do not use the tool if any parts are damage broken or misplaced. Repair or replace the parts.
Only use a circular saw disc that is specifically designed for use with the mitre saw. Ensure the circular saw disc is tightly installed.
Do not use a circular saw disc that is dull or damaged. When a circular saw disc is dull, it requires more force to use the tool, possibly causing the circular saw disc to break. This may cause an injury and will damage the workpiece.
Dull or improperly set saw blade produces a narrow kerf that can cause excessive friction on the saw blade, resulting in binding or a kickback. Keep the saw blade’s edge sharp and clean.
Only use a circular saw disc that exceeds the Speed Rating (see Specifications).
Use the correct mounting hardware. The mounting hardware is designed to hold the circular saw disc on the tool to allow optimum performance and safety of operation. Mismatched mounting hardware may result in a tool malfunction and cause an injury.
Always use a circular saw disc that is correctly sized and shaped for the tool. Accessories that do not match the tool’s mounting hardware will run erratically, causing loss of control.
Check the circular saw disc for damage before each use. A damaged circular saw disc can break during use and cause serious injury.
Always handle the circular saw disc with care when mounting or removing it.
Remove adjusting keys and wrenches before using the tool. The tool may eject an attached wrench or a key and cause an injury to you or a bystander.

POWER TOOL PRECAUTIONS

Do not use any power tool with a malfunctioning power switch or control. A power tool that fails to respond to the controls is dangerous and can cause an injury. A qualified technician must repair and verify the power tool is operating correctly, before it can be used.
Shut the power off and disconnect the mitre saw from the power supply (if possible) before making any adjustments, changing accessories, cleaning, servicing or when storing. Such preventive safety measures reduce the risk of starting the tool accidentally.
Never force the mitre saw. Excessive pressure could break the tool, resulting in damage to your workpiece or serious personal injury. Excessive pressure is the cause if your tool runs smoothly under no load, but roughly under load.
Check if the mitre saw’s moving parts are misaligned or binding before each use. Correct the issue before using the mitre saw to avoid an injury or damage to the tool.
Always be aware of the position of your hands relative to the mitre saw. Avoid awkward hand positions where a sudden slip could cause a hand to move into the circular saw disc. Never reach behind or beneath the mitre saw.
Only use accessories that are specifically designed for use with the mitre saw. Ensure the circular saw disc is tightly installed.
Only use the circular saw disc that exceeds the Speed rating (see Specifications).
Before using the mitre saw on a workpiece, test the mitre saw by running it at the highest speed rating for at least 30 seconds in a safe position. Stop immediately if there is any abnormal vibration or wobbling. Check the tool to determine the cause.
Never touch the circular saw disc or workpiece during or immediately after use. They may be hot and could inflict a burn injury.
The material and the motor housing can get very hot during operation. Stop work until the mitre saw and the circular saw disc both cool down to a safe temperature.
Do not cover the air vents. Proper cooling of the motor is necessary to ensure normal life of the tool.
Never use a tool with a circular saw disc that is cracked or worn. Change the circular saw disc before using it.
Avoid unintentional starts. Make sure the power switch is set to OFF before connecting the mitre saw to a power supply.
Make sure any adjustment mechanisms are secure before using the tool

KICKBACK PRECAUTIONS

Kickback is a sudden reaction to a pinched or snagged cutting accessory caught on the material. The material can be ejected and inflict a serious injury on the user or a bystander. Kickback can also damage the tool or workpiece.
Kickback can be avoided by taking proper precautions:

Maintain a firm grip on the material and position your body and arms to allow you to resist a kickback. Kickback can propel the material in the direction of the mitre saw’s rotation.
Use a clamp to hold the material if the tool includes a clamping system.
Use special care when working on corners, sharp edges or flexible material. These workpieces have a tendency to snag the circular saw disc.
Only use the circular saw disc designed for the tool.
Always make sure the work surface is free from nails and other foreign objects. Cutting into a nail can cause and tool to jump and damage the circular saw disc.
Maintain the circular saw disc’s cutting edge. A dull edge is more likely to slip from the workpiece.

ELECTRICAL SAFETY

WARNING!
Do not touch or handle a live tool with any part of your body that is wet or damp. Wet skin reduces resistance to electrical current, increasing the danger of a serious or fatal shock.

WARNING!
To reduce risk of electric shock, be certain that the plug is connected to a properly grounded receptacle.

Do not alter any parts of the tool or accessories. All parts and accessories are designed with built-in safety features that may be compromised if altered.
Protect yourself against electric shocks when working on electrical equipment. Avoid body contact with grounded surfaces. There is an increased chance of electrical shock if your body is grounded.
Do not expose the mitre saw to rain, snow, frost or any other damp or wet conditions. Water entering a tool will increase the risk of electric shock.
Do not disconnect the power cord in place of using the power switch. This will prevent an accidental start-up when the power cord is plugged into the power supply.
In the event of a power failure, turn off or unplug the machine as soon as the power is interrupted. The possibility of accidental injury could occur if the power returns and the unit is not switched off.
Make certain the power source conforms to requirements of your equipment (see Specifications).
This tool is only for use on 120 V (single phase) and is equipped with a three-prong grounded power supply cord and plug. Check with a qualified electrician if you are in doubt as to whether the outlet is properly grounded. If the tool should electronically malfunction or break down, grounding provides a low resistance path to carry electricity away from the user.
Never remove the grounding prong or modify the plug in any way, as this will render the tool unsafe.
Do not use any adapter plugs.

POWER CORD SAFETY

Insert the power cord plug directly to the power supply whenever possible. Use extension cords or surge protectors only when the tool’s power cord cannot reach a power supply from the work area.
When operating a tool outside, use an outdoor extension cord marked W-A or W. These cords are rated for outdoor use and reduce the risk of electric shock.
Do not operate this tool if the power cord is frayed, damaged or poorly spliced, as an electric shock may occur, resulting in personal injury or property damage.
Discontinue use if a power cord feels more than comfortably warm while operating the tool.
Keep all connections dry and off the ground to reduce the risk of electric shock. Do not touch the plug or wiring with wet hands.
Prevent damage to the power cord by observing the following:
Place the power cord in a position that prevents it from coming into contact with the tool or getting caught by the workpiece. The cord should always stay behind the tool.
Do not pull on the cord to disconnect the plug from an outlet.
Keep the cord away from heat, oil, sharp edges or moving parts.
Never carry the tool by the power cord
Position the cord so it is not be stepped on, tripped over or otherwise subjected to damage or stress.
Do not wrap the cord around the tool, as sharp edges may cut insulation or cause cracks if wound too tight. Gently coil cord and either hang on a hook or fasten with a device to keep cord together during storage.

UNPACKING

WARNING! Do not operate the tool if any part is missing. Replace the missing part before operating. Failure to do so could result in a malfunction and personal injury.Remove the parts and accessories from the packaging and inspect for damaAge. Contents:

Mitre Saw
Wrenches
Dust Bag
Clamping Block Components
Extension Tables (2, left and right)

IDENTIFICATION KEY

Trigger-Lock Button
Saw Head
Dust Bag
Slide Rails
Bevel Lock Knob
Clamp
Table Extension
Fence
Mitre Scale
Table
Mitre Pointer
Table Insert
Mitre Latch Lever
Table Locking Handle
Laser
Bevel Gauge
Adjustable Fence
Blade Guard
Motor
Carbon Brush Cap
ON/OFF Trigger
Handle

ASSEMBLY AND INSTALLATION

The mitre saw can be used as a portable unit or fixed to a workbench. You can also install this tool on a mitre saw stand.

MOUNT THE MITRE SAW ON A WOOD WORKBENCH
The hardware to mount the tool is not included.

Clean the work area where the tool will be mounted.
Position the mitre saw. Check that it is level and there are no obstructions around it that will interfere with a long workpiece.
Slide a flat washer over a 1/4 x 1 in. wood screw, insert the screw through a corner hole in the base and secure the base.
Repeat with three more screws. Tighten all screws until the gap between the mitre saw base and the bench top is 1/8 in.

FREESTANDING UNIT

Pull the anti-tilt brace out from the base and secure it with an Allen key (fig. 2).
Position the mitre saw. Check that it is level and there are no obstructions around it that will interfere with a long workpiece.
Extend the front leg screw until it touches the surface (Fig. 3-1). Make sure the mitre saw does not wobble. Continue to adjust the screw to level the rotating table.

BLADE INSTALLATION

WARNING! To prevent an accident or personal injury, always turn off the trigger switch and disconnect the power source before removing or installing the blade.Handle the circular saw disc with care during installation and removal.

Swing the saw head upwards and lock into place with the locking bolt (Fig. 4.2).
Insert a hex wrench into the clamp bolt holding the circular saw disc and unscrew it.
Remove the clamp bolt, outer flange and washer.
Fully raise the safety guard and remove the circular saw disc
Install the new a circular saw disc. Make sure that the arrow on is pointing in the same direction as the arrow on the lower guard.
The circular saw disc arbor may not match the circular saw disc’s spindle. Install a reducer ring in the circular saw disc. The ring must be snug to eliminate any ‘play’ in the saw blade when installed. Add another bushing ring into the tool-side flange if there is a depression. This will prevent the reducing ring from slipping out during use.
Reinstall the outer flange and washer and tighten the clamp bolt.
Turn the circular saw disc by hand to ensure that it turns freely and smoothly.

The blade should not shake or wobble after it has been installed, and there should be no gaps between the blade and the flange.

ALIGN THE SAW BLADE
Check the saw head alignment with an angle or engineering square after installing the saw blade to make sure you have a true 90° angle.

Lower the saw head and secure in place with the locking bolt (Fig. 4-2).
Place the square’s stock on the mitre table and the blade against the saw blade, between the teeth.
Loosen the lower lock nut (Fig. 5-1).
Adjust the lower bolt (Fig. 5-1) with a hex wrench until the saw is flush against the square’s blade. Move the square and check against the other side.
If there is a gap one one side but not the other, first rotate the saw blade and check on each side to see if it is warped.
The square may not be true. Test the square using the square to draw a line on a piece of wood that has a flat edge. Flip the square over so the stock is facing the other way. Align the bade with the bottom of the previously drawn line and draw a second line. You will only see one line if the square is true. Any divergence shows the square is not true.
Tighten the lower locking nut while holding the screw in place with the hex wrench.
Release the locking bolt to free the saw head.

ASSEMBLE MITRE SAW COMPONENTS

Lower the saw head to ensure it does not touch the table insert. Check the saw blade alignment and table insert installation if it does.
Attach the dust bag or a dust collection system to the mitre saw’s dust port (fig. 6).1. Raise and lower the saw head to make sure the safety guard is functioning correctly.
Lower the saw head to ensure it does not touch the table insert. Check the saw blade alignment and table insert installation if it does.B Attach the dust bag or a dust collection system to the mitre saw’s dust port (fig. 6).

WARNING! Only use the dust bag with wood or wood-like materials. Metal chips may ignite the bag’s fabric, resulting in a fire. Plastic chips may adhere to the bag’s interior. Pinch the dust bag’s retainer clip to spread the bag’s opening and place it over the dust port so the ring will sit behind the lip (Fig. 4) Release the clip and position the bag so the main compartment is hanging down. Make sure your dust collection system is designed to handle the workpiece’s material. Attach the intake hose to the dust port and secure.

ALIGN LASER GUIDE

Check the laser guide alignment. The laser beam should illuminate the saw blade’s teeth. Adjust the laser if it does not.

Make sure the blade is correctly aligned before adjusting the laser.
Loosen the screws on either side of the laser (Fig. 4-3).
Press the laser button to turn the laser on (Fig. 7-1).
Shift the laser to the side until it illuminate the saw blade’s teeth.
Tighten the screws carefully to avoid shifting the laser.
Turn the laser off until ready to use.

OPERATIONS

CHOOSING A CIRCULAR SAW BLADE
Make sure the circular saw blade matches the type of cut and the material. The circular saw blade is designed to work best with the intended material. Never use a wood circular saw blade on metal. The number of teeth for each type of circular saw bladeis not provided, as the number and size change as the circular saw blade diameter increases. Consult the circular saw blade manufacture’s information for intended materials and uses.

An all-purpose or framing circular saw blade is suitable for general purpose rip cutting and crosscutting. This blade is slower and the cut is not as clean as a circular saw blade designed for ripping or crosscutting.
Ripping saw blades have fewer teeth and are suitable with cutting along the wood grain. The cut is rough and may require additional work depending on the project.
Crosscut saw blades have a higher tooth count and are suitable for cutting across the grain. The cut is smoother with less material waste.
Plywood requires a circular saw blade with a higher tooth count, as the grain of each ply is at a different angle.
Each metal-cutting saw blade is designed to cut specific metals and thicknesses. Check the manufacturer’s specification to make sure they match your needs. Thinner metals will require a high tooth count, while thick metal requires a lower tooth count.
Plastics such as polyvinyl chloride (PVC), high density poly ethylene (HDPE), polypropolyene and polyvinylidende fluoride
(PVDF) require a special saw blade designed to cut plastic. This saw blade has a high tooth count and may have a coating that prevents heat build-up to avoid melting or chipping the plastic workpiece.

SAW CONFIGURATION SET-UP

WARNING! Unplug the mitre saw from the power supply before making any adjustments involving the circular saw disc to avoid a serious injury or amputation.

Push the saw head back fully.
Tighten the set screw to lock the sliding rails in place if the workpiece is not wider than 3-15/16 in. (100 mm). Otherwise loosen the set screw to allow the saw head to slide during the cut.
Loosen the bevel lock knob and adjust the saw head to the desired angle using the bevel gauge.
- Use a 90° angle square or engineering square for a precision vertical cut.
- Place the square’s stock on the mitre table and the blade against the saw blade, between the teeth.
- Adjust the bevel angle until the saw blade is flush against the square blade.
- Use a sliding T-bevel square in conjunction with a protractor or angle finder for a precision angle cut.
- Determine the angle.
- Place the T-bevel square against the protractor or angle finder and adjust the blade to match the angle. Keep in mind which direction your saw head rotates.
- Place the stock on the mitre table and the blade along the saw blade, between the teeth. Adjust the saw blade angle until it is flush against the square’s blade.
Tighten the bevel lock knob.
Loosen the adjustable fence knobs and slide the fences away from the saw head.
Adjust the depth of the cut (Fig. 8).
- Loosen the knurled knob on the screw.
- Turn the knob clockwise to decrease the cut depth. Turn the knob counterclockwise to increase the cut depth.
- Pull the saw head down, without squeezing the trigger, to check the depth. Adjust as necessary.
- Tighten the knurled knob to lock the depth screw in position.
- Perform a test cut on a piece of wood to confirm the depth is correct.
Pull the mitre latch lever upwards to free the mitre table lock. Rotate the table left or right until the mitre pointer aligns with the desired angle on the mitre scale.
Release the mitre latch lever and push the table locking handle down to secure the table in place.
Move each adjustable fence inward until they are no more than 5/16 in. (8 mm) away from the saw blade, then lock them into position. Readjust the fence each time there is a change to the mitre table or saw head angle.

PREPARING THE WORKPIECE

Turn the blade by hand to ensure that it turns freely and smoothly, before using the mitre saw.
Adjust the settings for bevel, angle mitre and the fence. Simulate the cut without power or the workpiece to confirm the settings will not interfere with the blade or safety guard.
Check for foreign materials like staples or nails lodged in the workpiece and remove them.
Adjust the blade height so the teeth protrude between 1/8 to 3/8 inches (3 to 10 mm) beyond the material’s surface during the cut, unless you are creating a shallow cut in the workpiece.
Clamp or otherwise secure the workpiece in position. Clamp a bowed or twisted workpiece with the convex side against the fence. There must be no gap between the workpiece and fence at the point of the cut. Warped workpieces can twist or shift during the cut.
Hold rods, tubes or cylindrical workpieces with a clamping systems that will prevent it from rolling.
Support a workpiece that is wider or longer than the work table with table extensions or saw horses. The end of a cut-off piece can pivot upward and lift safety guard or catch and be thrown by the spinning blade.

CUTTING THE WORKPIECE

Hold the saw blade away from the workpiece. Press the safety release, then the trigger
Wait until the blade reaches its full speed before beginning your cut. Beware of kickback.
Steadily push the saw head down into the workpiece, then away from you, until the cut is complete. Let the weight of the saw provide the cutting force. Run the saw blade at full speed for a smoother cut.
Release the trigger and safety and allow the saw blade to stop spinning, then raise the saw head clear of the workpiece.

CARE & MAINTENANCE

Maintain the tool with care. A tool in good condition is efficient, easier to control and will have fewer problems.
Inspect the tool components periodically. Repair or replace damaged or worn components.. Only use identical replacement parts when servicing.
Only use accessories intended for use with this tool. Follow instructions for changing accessories.
Keep the tool handles or gripping surfaces clean and dry.
Maintain the tool’s labels and name plates. These carry important information. If unreadable or missing, contact Princess Auto Ltd. for replacements.WARNING! Only qualified service personnel should repair the tool. An improperly repaired tool may present a hazard to the user and/or others.

CARBON BRUSH MAINTENANCE

The carbon brushes may require maintenance when the motor performance of the tool decreases or stops working completely. Check the carbon brushes for wear after the first 50 hours of use, then again after every 10 hours of operation.

Remove the brush cap from the brush holder on each side of the motor housing.
Some motor housings will only contain one carbon brush.
Remove the carbon brushes from the housing. Keep track of how the carbon brushes are orientated during removal. The concave surface must be oriented in the same way if the brushes are reused. This will prevent unnecessary wear after reinstalling them.
Clean old carbon brushes before reinstalling them. Rub the contact areas with a pencil eraser.
Reinsert the old carbon brushes in the same orientation to reduce wear.
Replace both carbon brushes if either is worn down more than 50 percent.
Install the brushes with the carbon against the motor armature. Test that the springs move without impediment.
Replace the brush caps. Do not overtighten.

REPLACING THE TABLE INSERT

WARNING! Replace a damaged table insert immediately to avoid a serious injury or damage to the tool. A damaged insert may allow small components or debris to become lodged. This debris can then block the saw blade during a cut, causing the blade to shatter.

Move the saw head aside to access the screws.
Remove the screws and the damaged table insert. Throw the insert away or recycle it.
Some screws may be hidden behind the fence. Rotate the table to expose these screws.
Install the table insert and secure with the removed screws.
Perform a mock-cut without power to check that the insert is properly positioned. Adjust the insert if necessary.

CLEANING

Brush sawdust and debris from the following components before use:
- tool vents
- safety guard, guard spring and pivot points
- the circular saw disc
- the table insert
Only clean the tool with mild soap and a damp cloth.
Dry the steel components and lubricate to prevent corrosion.

DISPOSAL
Recycle a tool damaged beyond repair at the appropriate facility.Contact your local municipality for a list of disposal facilities or by-laws for electronic devices, batteries, oil or other toxic liquids.

TROUBLESHOOTING

Visit a Princess Auto Ltd. location for a solution if the tool does not function properly or parts are missing. If unable to do so, have a qualified technician service the tool.

Supplied power is interrupted.
Brushes are worn or sticking.
Fuse or breaker tripped.
On/Off switch is faulty.
Motor components are short-circuiting or are defective.
Motor has overheated.
Power cord damaged.

Suggested Solution(s)

Check that power supply is still available.
See Carbon Brush Maintenance.
Replace fuse or reset breaker.
Replace faulty switch.
Have a qualified technician service the tool.
Allow motor to cool before attempting to use.
Replace damaged power cord.

Motor starts slow and doesn’t reach operation speed.| 1. Voltage is too low

2. Motor is damaged.

| 1. Confirm power source amps and voltage matches or exceeds those of the mitre saw. Remove other tools or devices on the same electrical circuit.
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| | 2. Have a qualified technician service the tool.
Problem(s)| Possible Cause(s)| Suggested Solution(s)
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The mitre saw’s parts may be rubbing or binding.
Electrical components may be shorting.
Carbon brush commutator is dirty.

Suggested Solution(s)

Check for obstructions or misaligned tool components. Lubricate, repair or replace the components based on the particular problem.
Disconnect tool from the power source immediately. Have the tool examined by a qualified technician.
Clean the commutator and carbon brushes (see Carbon Brush Maintenance).

Heavy sparking inside motor housing.| 1. New carbon brushes installed.

2. Motor is shorting.

3. Carbon brush commutator is dirty.

| 1. Sparking is normal and will diminish as brushes are shaped by the tool’s commutator.

2. Disconnect tool from the power source immediately. Have the tool examined by a qualified technician.

3. Clean the commutator and carbon brushes (see Carbon Brush Maintenance).

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Problem(s)| Possible Cause(s)| Suggested Solution(s)
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Saw blade damages plastic workpiece.| 1. Friction from the saw blade melts the material at the cut line.

2. Plastic is chipped or cracked along the cut line.

| 1. Saw blade speed is too fast. Reduce speed to slow heat build-up during cut.

a. Pause between cuts to allow saw blade to cool.

b. Use a saw blade with teeth that are uniform in height and shape. Also use blades with a high-tooth count.

| | c. Install a no-melt saw blades designed for cutting plastic.
| | 2. Use a saw blade with teeth that are uniform in height and shape. Also use blades with a high tooth-count.