Makita 4200NH, 4200HN User Manual

Circular Saw

110 mm (4-3/8”)
MODEL 4200NH

DOUBLE
INSULATION

INSTRUCTION MANUAL

WARNING:

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

001304

SPECIFICATIONS

Model 4200NH

Blade diameter 110 mm (4-3/8”)

Arbor diameter 20 mm (3/4”)

Max. Cutting depth

No load speed (RPM) 11,000/min.

Overall length 236 mm (9-1/4”)

Net weight 3.1 kg (6.8 lbs)

• Manufacturer reserves the right to change specifications without notice.

• Specifications may differ from country to country.

at 90° 32 mm (1-1/4”)

at 45° 21 mm (13/16”)

GENERAL SAFETY RULES USA002-2

(For All 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. Powe r

tools create sparks which may ignite the dust
or fumes.

2

3. Keep bystanders, children, and visitors

away while operating a power tool. Dis-

tractions can cause you to lose control.

Electrical Safety

4. Double insulated tools are equipped with
a polarized plug (one blade is wider than
the other.) This plug will fit in a polarized
outlet only one way. If the plug does not
fit fully in the outlet, reverse the plug. If it
still does not fit, contact a qualified elec-

trician to install a polarized outlet. Do not
change the plug in any way. Double insula-

tion eliminates the need for the three wire
grounded power cord and grounded power
supply system.

5. Avoid body contact with grounded sur­faces such as pipes, radiators, ranges and
refrigerators. There is an increased risk of

electric shock if your body is grounded.

6. Do not expose power tools to rain or wet
conditions. Water entering a power tool will

increase the risk of electric shock.

7. Do not abuse the cord. Never use the cord
to carry the tools or pull the plug from an
outlet. Keep cord away from heat, oil,
sharp edges or moving parts. Replace
damaged cords immediately. Damaged

cords increase the risk of electric shock.

8. When operating a power 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.

Personal Safety

9. 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.

10. 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.

11. Avoid accidental starting. Be sure switch
is off before plugging in. Carrying tools with

your finger on the switch or plugging in tools
that have the switch on invites accidents.

12. 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.

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

balance enables better control of the tool in
unexpected situations.

14. Use safety equipment. Always wear eye

protection. Dust mask, non-skid safety

shoes, hard hat, or hearing protection must
be used for appropriate conditions. Ordinary
eye or sun glasses are NOT eye protection.

Tool Use and Care

15. 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.

16. 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.

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

with the switch is dangerous and must be
repaired.

18. Disconnect the plug from the power
source before making any adjustments,
changing accessories, or storing the tool.

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

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

dangerous in the hands of untrained users.

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

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

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

caused by poorly maintained tools.

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

one tool, may become hazardous when used
on another tool.

3

SERVICE

23. Tool service must be performed only by

qualified repair personnel. Service or main-

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

24. 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
electric shock or injury.

USE PROPER EXTENSION CORD: Make sure your extension cord is in good condition.
When using an extension cord, be sure to use one heavy enough to carry the current your
product will draw. An undersized cord will cause a drop in line voltage resulting in loss of
power and overheating. Table 1 shows the correct size to use depending on cord length and
nameplate ampere rating. If in doubt, use the next heavier gage. The smaller the gage num­ber, the heavier the cord.

Table 1: Minimum gage for cord

Ampere Rating

More Than Not More Than AWG

0 6 18 16 16 14

6 10 18161412
10 12 16 16 14 12
12 16 14 12 Not Recommended

Volts Total length of cord in feet

120 V 25 ft. 50 ft. 100 ft. 150 ft.

SPECIFIC SAFETY RULES USB008-5

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

4

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 or
its own cord. 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 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 with both hands on
the saw and position your body and arm
to allow 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 saw teeth are not engaged into the

5

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 should 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 may 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.

Fig. 3

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

a speed so that the blade cuts without slow­ing.

12. 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.

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

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

15. When operating the saw, keep the cord
away from the cutting area and position it
so that it will not be caught on the work­piece during the cutting operation. The
tool is provided with a front grip and rear
handle for two hand operation. Operate
with proper hand support, proper work­piece support, and supply cord routing

6