Makita 5621D User Manual

Cordless Circular Saw

Equipped with Electric Blade Brake 165 mm (6-1/2”) MODEL 5621D

INSTRUCTION MANUAL

WARNING:

For your personal safety, READ and UNDERSTAND before using. SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.

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SPECIFICATIONS

Model 5621D

Blade diameter 165 mm (6-1/2”)

Max. Cutting depth

No load speed (RPM) 2,600/min.

Overall length 364 mm (14-5/16”)

Net weight 3.4 kg (7.5 lbs)

Battery Charger DC1804

Input A. C. only 50 Hz - 60 Hz

Output D. C. 7.2 V - 18 V

Battery Cartridge 1822 1833 1834 1835

Voltage 18 V

Charging time 45 min. 50 min. 60 min. 70 min.

• Manufacturer reserves the right to change specifications without notice.

• Specifications may differ from country to country.

at 90° 54 mm (2-1/8”)

at 45° 38 mm (1-1/2”)

GENERAL SAFETY RULES USA003-1

(FOR All BATTERY OPERATED TOOLS)

WARNING:

Read and understand all instructions. Failure to follow all

instructions listed below, may result in electric shock, fire and/or serious personal injury.

SAVE THESE INSTRUCTIONS

Work A re a

1. Keep your work area clean and well lit.

Cluttered benches and dark areas invite accidents.

2. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Power

tools create sparks which may ignite the dust or fumes.

3. Keep bystanders, children, and visitors

away while operating a power tool. Distrac-

tions can cause you to lose control.

Electrical Safety

4. A battery operated tool with integral batteries or a separate battery pack must be recharged only with the specified charger for the battery. A charger that may be suit-

able for one type of battery may create a risk of fire when used with another battery.

5. Use battery operated tool only with specifically designated battery pack. Use of any

other batteries may create a risk of fire.

Personal Safety

6. Stay alert, watch what you are doing, and use common sense when operating a power tool. Do not use tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while

operating power tools may result in serious personal injury.

7. Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or long

hair can be caught in moving parts.

8. Avoid accidental starting. Be sure switch is in the locked or off position before inserting battery pack. Carrying tools with

your finger on the switch or inserting the battery pack into a tool with the switch on invites accidents.

9. Remove adjusting keys or wrenches before turning the tool on. A wrench or a

key that is left attached to a rotating part of the tool may result in personal injury.

10. Do not overreach. Keep proper footing and balance at all times. Proper footing and

balance enable better control of the tool in unexpected situations.

11. Use safety equipment. Always wear eye

protection. Dust mask, non-skid safety

shoes, hard hat, or hearing protection must be used for appropriate conditions.

Tool Use and Care

12. Use clamps or other practical way to secure and support the workpiece to a stable platform. Holding the work by hand or

against your body is unstable and may lead to loss of control.

13. Do not force tool. Use the correct tool for your application. The correct tool will do the

job better and safer at the rate for which it is designed.

14. Do not use tool if switch does not turn it on or off. A tool that cannot be controlled

with the switch is dangerous and must be repaired.

15. Disconnect battery pack from tool or place the switch in the locked or off position before making any adjustments, changing accessories, or storing the tool.

Such preventive safety measures reduce the risk of starting the tool accidentally.

16. Store idle tools out of reach of children and other untrained persons. Tools are

dangerous in the hands of untrained users.

17. When battery pack is not in use, keep it away from other metal objects like: paper clips, coins, keys, nails, screws, or other small metal objects that can make a connection from one terminal to another.

Shorting the battery terminals together may cause sparks, burns, or a fire.

18. Maintain tools with care. Keep cutting tools sharp and clean. Properly maintained

tools with sharp cutting edge are less likely to bind and are easier to control.

19. Check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the tool’s operation. If damaged, have the tool serviced before using. Many accidents are

caused by poorly maintained tools.

20. Use only accessories that are recommended by the manufacturer for your model. Accessories that may be suitable for

one tool may create a risk of injury when used on another tool.

SERVICE

21. Tool service must be performed only by qualified repair personnel. Service or main-

tenance performed by unqualified personnel may result in a risk of injury.

22. When servicing a tool, use only identical replacement parts. Follow instructions in the Maintenance section of this manual.

Use of unauthorized parts or failure to follow Maintenance instructions may create a risk of shock or injury.

SPECIFIC SAFETY RULES USB027-5

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

1. DANGER! Keep hands away from cutting area and blade. Keep your second hand on auxiliary handle or motor housing. If

both hands are holding the saw, they cannot be cut by the blade.

Keep your body positioned to either side of the saw blade, but not in line with the saw blade. KICKBACK could cause the saw

to jump backwards. (See “Causes and Operator Prevention of Kickback”) Do not reach underneath the work. The guard can not protect you from the blade below the work. Do not attempt to remove cut material when blade is moving. CAUTION: Blades coast after turn off. Wait until blade stops before grasping cut material.

2. Check lower guard for proper closing before each use. Do not operate saw if lower guard does not move freely and close instantly. Never clamp or tie the lower guard into the open position. If saw

is accidentally dropped, lower guard may be bent. Raise the lower guard with the Retracting Lever and make sure it moves freely and does not touch the blade or any other part, in all angles and depths of cut.

To check lower guard, open lower guard by hand, then release and watch guard closure. Also check to see that Retracting Lever does not touch tool housing. Leaving blade exposed is VERY DANGEROUS and can lead to serious personal injury.

3. Check the operation and condition of the lower guard spring. If the guard and the spring are not operating properly, they must be serviced before use. Lower guard

may operate sluggishly due to damaged parts, gummy deposits, or a buildup of debris.

4. Lower guard should be retracted manually only for special cuts such as “Pocket Cuts” and “Compound Cuts.” Raise lower guard by Retracting Lever. As soon as blade enters the material, lower guard must be released. For all other sawing, the

lower guard should operate automatically.

5. Always observe that the lower guard is covering the blade before placing saw down on bench or floor. An unprotected,

coasting blade will cause the saw to walk backwards, cutting whatever is in its path. Be

aware of the time it takes for the blade to stop after switch is released.

6. NEVER hold piece being cut in your hands

or across your leg. It is important to support

the work properly to minimize body exposure, blade binding, or loss of control.

7. Hold tool by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring.

Contact with a “live” wire will also make exposed metal parts of the tool “live” and shock the operator.

8. When ripping always use a rip fence or straight edge guide. This improves the

accuracy of cut and reduces the chance for blade binding.

9. Always use blades with correct size and shape (diamond vs. round) arbor holes.

Blades that do not match the mounting hardware of the saw will run eccentrically, causing loss of control.

10. Never use damaged or incorrect blade washers or bolts. The blade washers and

bolt were specially designed for your saw, for optimum performance and safety of operation.

11. Causes and Operator Prevention of Kickback:

Kickback is a sudden reaction to a pinched, bound, or misaligned saw blade, causing an uncontrolled saw to lift up and out of the workpiece toward the operator. When the blade is pinched or bound tightly by the kerf closing down, the blade stalls and the motor reaction drives the unit rapidly back toward the operator. If the blade becomes twisted or misaligned in the cut, the teeth at the back edge of the blade can dig into the top surface of the wood causing the blade to climb out of the kerf and jump back toward the operator. Kickback is the result of tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below:

Maintain a firm grip on the saw and position your body and arm in a way that allows you to resist KICKBACK forces.

KICKBACK forces can be controlled by the operator, if proper precautions are taken.

When blade is binding, or when interrupting a cut for any reason, release the trigger and hold the saw motionless in the material until the blade comes to a complete stop. Never attempt to remove the saw from the work or pull the saw backward while the blade is in motion or KICKBACK may occur. Investigate and take

corrective actions to eliminate the cause of blade binding.

When restarting a saw in the workpiece, center the saw blade in the kerf and check that teeth are not engaged into the material. If saw blade is binding, it may walk up or

KICKBACK from the workpiece as the saw is restarted.

Support large panels to minimize the risk of blade pinching and KICKBACK. Large

panels tend to sag under their own weight. Supports must be placed under the panel on both sides, near the line of cut and near the edge of the panel as shown in Fig. 1. To minimize the risk of blade pinching and kickback. When cutting operation requires the resting of the saw on the workpiece, the saw shall be rested on the larger portion and the smaller piece cut off.

Fig. 1 To avoid kickback, do support board or

panel near the cut.

Fig. 2 Do not support board or panel away from

the cut.

Do not use dull or damaged blade.

Unsharpened or improperly set blades produce narrow kerf causing excessive friction, blade binding and KICKBACK. Keep blade sharp and clean. Gum and wood pitch hardened on blades slows saw and increases potential for kickback. Keep blade clean by first removing it from tool, then cleaning it with gum and pitch remover, hot water or kerosene. Never use gasoline.

Blade depth and bevel adjusting locking levers must be tight and secure before making cut. If blade adjustment shifts while

cutting, it will cause binding and KICKBACK.

Use extra caution when making a “Pocket Cut” into existing walls or other blind areas. The protruding blade may cut objects

that can cause KICKBACK. For pocket cuts, retract lower guard using Retracting Lever.

ALWAYS hold the tool firmly with both hands. NEVER place your hand or fingers behind the saw. If kickback occurs, the saw

could easily jump backwards over your hand, leading to serious personal injury.

Push the saw forward at a speed so that the blade cuts without slowing.

12. Be aware that this tool is always in an operating condition, because it does not have to be plugged into an electrical outlet.

13. Use extra caution when cutting damp wood, pressure treated lumber, or wood containing knots. Adjust speed of cut to

maintain smooth advancement of tool without decrease in blade speed.

14. Adjustments. Before cutting be sure depth and bevel adjustments are tight.

15. Avoid Cutting Nails. Inspect for and remove all nails from lumber before cutting.

16. The tool is provided with a front grip and rear handle for two hand operation. Operate with proper hand support and proper workpiece support. WARNING: It is important to support the workpiece properly and to hold the saw firmly to prevent loss of control which could cause personal injury. Fig. 4 illustrates typical hand support of the saw.

Fig. 3

Never force the saw. Forcing the saw can cause uneven cuts, loss of accuracy, and possible kickback.

Fig. 4 A typical illustration of proper hand

support and workpiece support.

17. Place the wider portion of the saw base on that part of the workpiece which is solidly supported, not on the section that will fall off when the cut is made. As examples, Fig. 5 illustrates the RIGHT way to cut off the end of a board, and Fig. 6 the WRONG way. If the workpiece is short or small,

clamp it down. DO NOT TRY TO HOLD SHORT PIECES BY HAND!

extremely dangerous and can lead to serious accidents.

Fig. 5

Fig. 6

18. Never attempt to saw with the circular saw held upside down in a vise. This is

19. WARNING: Blade coasts to stop after switch is released. Contact with coasting blade can cause serious injury. Before setting the tool down after completing a cut, be sure that the lower (telescoping) guard has closed and the blade has come to a complete stop.

20. Some material contains chemicals which may be toxic. Take caution to prevent dust inhalation and skin contact. Follow material supplier safety data.

Fig. 7

SAVE THESE INSTRUCTIONS

WARNING:

MISUSE or failure to follow the safety rules stated in this instruction manual may cause serious personal injury.

SYMBOLS USD301-1

The followings show the symbols used for tool.

V .......................volts

................... direct current

....................no load speed

.../min................revolutions or reciprocation per

minute

IMPORTANT SAFETY INSTRUCTIONS FOR CHARGER & BATTERY CARTRIDGE

1. SAVE THESE INSTRUCTIONS - This manual contains important safety and operating instructions for battery charger.

2. Before using battery charger, read all instructions and cautionary markings on (1) battery charger, (2) battery, and (3) product using battery.

3. CAUTION - To reduce risk of injury, charge only MAKITA rechargeable batteries marked on the charger label. Other types of batteries may burst causing personal injury and damage.

4. Do not expose charger to rain or snow.

5. Use of an attachment not recommended

or sold by the battery charger manufacturer may result in a risk of fire, electric shock, or injury to persons.

Table 1: RECOMMENDED MINIMUM AWG SIZE FOR EXTENSION CORDS FOR BATTERY CHARGERS

Length of Cord (Feet) 25 50 100 150

AWG Size of Cord 18 18 18 16

9. Do not operate charger with damaged cord or plug - replace them immediately.

10. Do not operate charger if it has received a sharp blow, been dropped, or otherwise damaged in any way; take it to a qualified serviceman.

11. Do not disassemble charger or battery cartridge; take it to a qualified serviceman when service or repair is required, Incorrect reassembly may result in a risk of electric shock or fire.

12. To reduce risk of electric shock, unplug charger from outlet before attempting any maintenance or cleaning. Turning off controls will not reduce this risk.

6. To reduce risk of damage to electric plug and cord, pull by plug rather than cord when disconnecting charger.

7. Make sure cord is located so that it will not be stepped on, tripped over, or otherwise subjected to damage or stress.

8. An extension cord should not be used unless absolutely necessary. Use of improper extension cord could result in a risk of fire and electric shock. If extension cord must be used, make sure:

a. That pins on plug of extension cord

are the same number, size, and shape as those of plug on charger;

b. That extension cord is properly wired

and in good electrical condition;

c. That wire size is at least as large as

the one specified in the table below.

13. The battery charger is not intended for use by young children or infirm persons without supervision.

14. Young children should be supervised to ensure that they do not play with the battery charger.

15. If operating time has become excessively shorter, stop operating immediately. It may result in a risk of overheating, possible burns and even an explosion.

16. If electrolyte gets into your eyes, rinse them out with clear water and seek medical attention right away. It may result in loss of your eyesight.

USC001-3

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