C 6DD - Service après-vente HITACHI - Free user manual and instructions

Product Type	Cordless Circular Saw
Brand	Hitachi
Model	C6DD
Battery Voltage	18 V
Battery Type	Ni-Cd (EB1814, EB18B, EB1820, EB1830H)
No-Load Speed	2600 min⁻¹
Cutting Depth at 90°	55 mm
Cutting Depth at 45°	40 mm
Blade Diameter	165 mm
Blade Arbor	16 mm or 30 mm
Weight (including battery)	4.4 kg
Charger Model	UC24YFA
Charging Voltage	7.2 - 24 V
Light Bulb	12 V, 5 W
Electric Brake	Yes
Safety Cover	Retractable with lever
Riving Knife	Adjustable
Cutting Guide	Included (adjustable)
Dust Collection	Optional dust collector set
Carbon Brushes	Replaceable (Code No. 999058)
Warranty	Service by authorized center

Frequently Asked Questions - C 6DD HITACHI

What batteries are compatible with the Hitachi C6DD circular saw?

The C6DD uses 18 V Ni-Cd batteries: models EB1814, EB18B, EB1820, and EB1830H. Always use genuine Hitachi batteries.

How long does it take to charge the battery?

Charging time depends on the battery: approx. 40 min for EB1814, 50 min for EB18B/EB1820, and 70 min for EB1830H at 20°C using the UC24YFA charger.

What is the maximum cutting depth of the C6DD?

At 90° angle, the maximum cutting depth is 55 mm; at 45° angle, it is 40 mm. Always adjust the depth before cutting.

How do I replace the saw blade?

First remove the battery. Set the cutting depth to maximum, lock the spindle using the lock lever, remove the hex bolt and washer (B) with the box wrench. Retract the safety cover fully and remove the blade. Install new blade with correct washer orientation, ensuring arrow direction matches cover arrow. Tighten bolt securely.

What should I do if the saw blade binds or kickback occurs?

Release the trigger immediately and hold the saw motionless until the blade stops. Do not pull the saw backward. Investigate the cause (e.g., dull blade, improper support). Ensure the riving knife is correctly adjusted and work is properly supported.

How do I adjust the cutting angle?

Loosen the knob on the incline gauge and the wing-bolt on the base. Tilt the saw blade up to 45°. Retighten both. Use a protractor for precise angle.

Can I use the saw upside down in a vise?

No, never operate the circular saw held upside down in a vise. This is extremely dangerous and can lead to serious accidents.

How do I maintain the carbon brushes?

Inspect periodically. Replace when worn to near the wear limit (approx. 5mm). Use Hitachi carbon brush code 999058. Remove brush cap, extract old brush, insert new one ensuring the nail aligns with the contact portion.

What safety features does the C6DD have?

It includes an electric brake that stops the blade quickly, a retractable safety cover, a riving knife to prevent kickback, and a switch lock to prevent accidental start. Always wear ear protection and eye protection.

What is the recommended storage temperature?

Store the tool and charger in a dry place where temperature is below 40°C and out of reach of children. Avoid direct sunlight.

USER MANUAL C 6DD HITACHI

BATTERIDRIVEN CIRKELSÅG BATTERIDREVET RANDSAV BATTERIDREVET SIRKELSAG PARISTOKÄYTTÖINEN SIRKKELISAHA CORDLESS CIRCULAR SAW

C 6DD

Technical line drawing of a mechanical assembly with rollers and brackets (no text or symbols)

Line drawing of a sewing machine on a flat table, labeled with number 1 (no text or symbols on the machine itself)

Line drawing of a table setup with a curved platform and mechanical components, no text or symbols present

Illustration of a hand using a manual tool to cut a mechanical component (no text or symbols visible)

Line drawing of a hand operating a manual cutter on a workbench (no text or symbols)

Illustration of a hand using a tool to cut or install a mechanical component, no text or symbols present

13

14(A)

14(B)

15

16

17

18(A)

18(B)

19 20

	Svenska Dansk Norsk
1	Stöd brådan eller panelen i närheten av skärytan, för att undvika bakslag. panelet nær	For at undgå tilbageslag skal pladen eller snittet understøttes. panelet nær snittetsted	For å unngå tilbakeslag må planken eller det understøttes.
2	Stöd inte brådan eller panelen långt bort från skärytan. fra snitstedet. fjernt fra snittstedet.	Understøt ikke pladen eller panelet fjernt	Planken eller panelet må ikke understøttes
3	TYPISK ILLUSTRATION AV KORREKT TYPISK HÄNDSTÖD. HÄNDUNDERSTÖTTELSE HÄNDSTÖTTE	PÅ KORREKT
4	Skruvstäd Skruestik Skrustikke
5	Uppladdningsbart batteri Genopladeligt batteri Oppladingsbart batteri
6	Lås	Smæklås Sperrehake
7	Namnplåt	Betegnelsesplade	Navneplate
8	Dra ut	Træk ud	Dra ut
9	Tryck inåt	Læg i Sett i
10	Handtag	Håndtag	Håndtak
11	Tryck	Tryk	Trykk
12	Signallampa	Kontrollampe	Pilotlys
13	Timmer	Emne	Arbeidsstykke av tre
14	Bottenplatta	Base	Grunnflate
15	Arbetsbänk	Arbejdsbænk	Arbeidsbenk
16	Sågblad	Savblad	Sagblad
17	Gripknopp Håndtagsknop	Knapp
18	Spaltkniv	Spaltekniv	Spaltekniv
19	Bult med sexkanthuvud	Sekskantbolt	Sekskantbolt
20	Vingbult	Vingebolt	Vingebolt
21	Markeringslinje	Markeringslinie	Avmerkingslinje
22	Bladstyrning	Styrestykke	Styrestykke
23	Fämre skala när sågbladet inte lutas	Skala foran när ikke vinkelindstillet	Frontskala uten helning
24	Fämre skala vid 45 graders lutning	Skala foran ved indstilling til 45° F	Frontskala ved 45° helning
25	Skruv M4	M4-skrue M4 Skrue
26	Vingbult	Fløjmøtrik Vingebolt
27	Styrning (Anslag)	Anslag	Fører
28	Strömbrytarlås	Afbryderlås	Bryterlås
29	Avtryckare (strömbrytare)	Kontakttrigger	Startbryter
30	Bult med sexkanthuvud	Sekskantbolt	Sekskantbolt
31	Låsspak	Låsegreb Sperrespak
32	Hylsnyckel Nøgle Fastnøkkel
33	Spak för skyddskåpa	Sikkerhedsdækselarm	Spak for sikkerhetsdeksel
34	Sågskydd	Savdæksel Sagdeksel
35	Mellanlägg (B)	Mellemlægsskive (B)	Underlagsskive (B)
36	Mellanlägg (A)	Mellemlægsskive (A) Underlagsskive (A)
37	Sågspindel	Spindel	Spindel
38	Lampkåpa	Lampedæksel	Lampedeksel
39	Konvex	Konveks	Konveks
40	Handtagskåpa	Håndtagsdæksel	Håndtaksdeksel
41	Konkav	Konkav	Konkav
42	Pilmärkt	Pilemarkering	Pilmerke
43	Lampfattningens baksida Bagside af fatning Muffens bakside
44	Lampfattning	Fatning	Muffe
45	Glödlampa	Lyspære	Lyspære
46	Avnötningsgräns	Slidgrænse	Slitasjegrense
47	Nagel på kolborste	Kulbørstes søm	Stift på kullbørste
48	Utbuktning på kolborste	Fremspring på kuldørste	Utstikkende del på kullbørsten
49	Kontaktdel på borstmunstyckets utsida	Kontaktdel på udvendigt børsterør	Kontaktpunkt utenfor børsterøret
50	Vinkelhake	Vindel	Vinkel
51	Spårskruv som ställskruv Stilleskrue	Stoppeskrue med spor
52	Sågspånssanlarsats	Støroppsamlingsett	Støvsugersæt

Technical line drawing of a mechanical component (no text or symbols)

1. Sågblad

Technical line drawing of a mechanical component with no visible text or symbols

1. Savblad

Technical line drawing of a mechanical component (no text or symbols)

1. Sagblad

VEDLIKEHOLD OG INSPEKSJON

OBS:

Technical line drawing of a mechanical component with no visible text or symbols

1. Sahanterä

1. Keep work area clean. Cluttered areas and benches invite accidents.
2. Avoid dangerous environment. Don't expose power tools and charger to rain. Don't use power tools and charger in damp or wet locations. And keep work area well lit. Never use power tools and charger near flammable or explosive materials. Do not use tool and charger in presence of flammable liquids or gases.
3. Keep children away. All visitors should be kept safe distance from work area.
4. Store idle tools and charger. When not in use, tools and charger should be stored in dry, high or locked-up place-out of reach of children. Store tools and charger in a palce where the temperature is less than 40^ C.
5. Don't force tool. It will do the job better and safer at the rate for which it was designed.
6. Use right tool. Don't force small tool or attachment to do the job of a heavy duty tool.
7. Wear proper apparel. Do not wear clothing or jewelry. They can be caught in moving parts. Rubber gloves and footwear are recommended when working outdoor.
8. Use eye protection with most tools. Also use face or dust mask if cutting operation is dusty.
9. Don't abuse cord. Never carry charger by cord or yank it to disconnect from receptacle. Keep cord from heat, oil and sharp edges.
10. Secure work. Use clamps or a vise to hold work. It's safer than using your hand and it frees both hands to operate tool.
11. Don't overreach. Keep proper footing and balance at all times.
12. Maintain tools with care. Keep tools sharp at all times, and clean for best and safest performance. Follow instructions for lubricating and changing accessories.
13. When the charger is not in use, or when being maintained and inspected, disconnect its power cord from the AC outlet.
14. Remove chuck wrenches and wrenches. Form habit of checking to see that wrenches are removed from tool before turning it on.
15. Avoid accidental starting. Don't carry tool with finger on switch.
16. To avoid danger, always use only the specified charger.
17. Use only original HITACHI replacement parts.
18. Do not use power tools for applications other than those specified in the Handling Instructions.
19. To avoid personal injury, use only the accessories or attachment recommended in these handling instructions or in the HITACHI catalog.
20. If the supply cord of this charger is damaged, the charger must be returned to the HITACHI authorized service center for the cord to be replaced. Let only the authorized service center do the repairing. The Manufacturer will not be responsible for any damages or injuries caused by repair by the unauthorized persons or by mishandling of the tool.
21. To ensure the designed operational integrity of power tools and charger, do not remove installed covers or screws.
22. Always use the charger at the voltage specified on the nameplate.
23. Do not touch movable parts or accessories unless the battery has been removed.
24. Always charge the battery before use.

25. Never use a battery other than that specified. Do not connect a usual dry cell, a rechargeable battery other than that specified or a car battery to the power tool.

26. Do not use any transformer that has a booster.

27. Do not charge the battery from an engine electric generator or DC power supply.
28. Always charge indoors. Because the charger and battery heat slightly during charging, charge the battery in a place not exposed to direct sunlight; where the humidity is low and the ventilation good.
29. When working in a high place, pay attention to the activities below to make sure there are no people below.
30. Use the exploded assembly drawing on this handling instructions only for authorized servicing.

PRECAUTIONS ON USING CORDLESS CIRCULAR SAW

1. Always charge the battery at a temperature of 0 – 40°C. A temperature of less than 0°C will result in over charging which is dangerous. The battery cannot be charged at a temperature higher than 40°C.
   The most suitable temperature for charging is that of 20 - 25°C.
2. When one charging is completed, leave the charger for about 15 minutes before the next charging of battery.
   Do not charge more than two batteries consecutively.
3. Do not allow foreign matter to enter the hole for connecting the rechargeable battery.
4. Never disassemble the rechargeable battery and charger.
5. Never short-circuit the rechargeable battery. Short-circuiting the battery will cause a great electric current and overheat. It results in burn or damage to the battery.
6. Do not dispose of the battery in fire. If the battery is burnt, it may explode.
7. When using this unit continuously, the unit may overheat, leading to damage in the motor and switch. Please leave it without using it for approximately 15 minutes.
8. Do not insert object into the air ventilation slots of the charger. Inserting metal objects or inflammables into the charger air ventilation slots will result in electrical shock hazard or damaged charger.
9. Using an exhausted battery will damage the charger.
10. Bring the battery to the shop from which it was purchased as soon as the post-charging battery life becomes too short for practical use. Do not dispose of the exhausted battery.
11. Wear earplugs to protect your ears during operation.
12. Always hold the handle of the power tool firmly. Otherwise the counterforce produced may result in inaccurate and even dangerous operation.
13. Do not use saw blades which are deformed or cracked.
14. Do not use saw blades made of high speed steel.
15. Do not use saw blades which do not comply with the characteristics specified in these instructions.
16. Do not stop the saw blades by lateral pressure on the disc.
17. Always keep the saw blades sharp.
18. Ensure that the safety cover moves smoothly and freely.
19. Never use the circular saw with its safety cover fixed in the open position.

20. Ensure that the retraction mechanism of the guard system operates correctly.

21. The saw blades body must be thinner than the riving knife and the width of cut, or kerf (with teeth set) must be greater than the thickness of the riving knife.

22. Never operate the circular saw with the saw blade turned upward or the side.
23. Ensure that the material is free of foreign matters such as nails.
24. The riving knife should always be used except when plunging in the middle of the workpiece.
25. The saw blades range should be from 165 mm to 150 mm.
26. Be careful of brake kickback.

This circular saw features an electric brake that functions when the switch is released. As there is some kickback when the brake functions, be sure to hold the main body securely.

1. Avoid cutting in the state where the base has floated up from the material.

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.

1. 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 work piece, the saw shall be rested on the larger portion and the smaller piece cut off.

1. 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.
   NEVER place your hand or fingers behind the saw (Fig. 3). If kickback occurs, the saw could easily jump backwards over your hand, possibly causing severe injury.
2. WARNING: It is important to support the work piece 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.
3. Place the wider portion of the saw base on that part of the work piece 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 board, and Fig. 6 the WRONG way. If the work piece is short or small, clamp is down.

DON'T TRY TO HOLD SHORT PLACES BY HAND!

1. Never attempt to saw with the circular saw held upside down in a vise. This is extremely dangerous and can lead to serious accidents. (Fig. 7)

2. When the brake becomes ineffective, replace the carbon brushes with new ones.

SPECIFICATIONS

POWER TOOL

Model C6DD
No-load speed 2600 min			-1
Capacity Cutting depth		90° 55	mm
		45° 40	mm
Rechargeable battery Ni-Cd battery, 18V
Light bulb 12V, 5W
Weight 4.4 kg

CHARGER

Model UC24YFA
Charging voltage 7.2 - 24V
Weight 0.6 kg

STANDARD ACCESSORIES

C6DD

① Saw Blade (mounted on tool) .... 1
② Box Wrench .... 1
③ Guide 1
④ Wing-bolt 1
⑤ Charger (UC24YFA) 1
⑥ Plastic case....1

Standard accessories are subject to change without notice.

OPTIONAL ACCESSORIES (sold separately)

1. Battery (EB1814, EB18B, EB1820, EB1830H)

Technical line drawing of a mechanical component with no visible text or symbols

1. Saw Blade

Use.....Cutting various types of wood.

External Diam	Hole Diam. No. of	Teeth
165 mm 16	mm 16 pieces
165 mm 30	mm 16 pieces

1. Washer (A) .... for 16 mm (Hole dia .of saw blade) .... for 30 mm (Hole dia. of saw blade)
2. Dust Collector Set (D)

Connect the suction hose to collect saw dust with the vacuum cleaner (see Fig. 30).

Optional accessories are subject to charge without notice.

APPLICATION

Cutting various types of wood.

BATTERY REMOVAL/INSTALLATION

1. Battery removal

Hold the handle tightly and push the battery latches to remove the battery (see Fig. 8 and 9).

CAUTION

Never short-circuit the battery.

1. Battery installation

Insert the battery while observing its polarities (see Fig. 9).

CHARGING

Before using the power tool, charge the battery as follows.

1. Connect the charger's power cord to a receptacle. When the power cord is connected, the charger's pilot lamp will blink in red. (At 1-second intervals).
2. Insert the battery into the charger.

Firmly insert the battery into the charger till it contacts the bottom of the charger and checking the polarities as shown in Fig. 10.

CAUTION

○If the batteries are inserted in the reverse direction, not only recharging will become impossible, but it may also cause problems in the charger such as a deformed recharging terminal.
3. Charging

When inserting a battery in the charger, charging will commence and the pilot lamp will light continuously in red.

When the battery becomes fully recharged, the pilot lamp will blink in red. (At 1-second intervals.) (See Table 1)

(1) Pilot lamp indication

The indications of the pilot lamp will be as shown in Table 1, according to the condition of the charger or the rechargeable battery.

Table 1

Indications of the pilot lamp
Before charging	Blinks (RED)	Lights for 0.5 seconds. Does not light for 0.5 seconds. (off for 0.5 seconds)
While charging	Lights (RED)	Lights continuously
Charging complete	Blinks (RED)	Lights for 0.5 seconds. Does not light for 0.5 seconds. (off for 0.5 seconds)
Charging impossible	Flickers (RED)	Lights for 0.1 seconds. Does not light for 0.1 seconds. (off for 0.1 seconds)	Malfunction in the battery or the charger
Charging impossible	Lights (GREEN)	Lights continuously	The battery temperature is high, making recharging impossible.

(2) Regarding the temperatures of the rechargeable battery.

The temperatures for rechargeable batteries are as shown in the table below, and batteries that have become hot should be cooled for a while before being recharged.

Table 2 Recharging ranges of batteries

Rechargeable batteries which	Temperatures at the battery can be recharged
EB1814. EB18B. EB1820	-5°C - 60°C
EB1830H	0°C - 45°C

(3) Regarding recharging time

Depending on the combination of the charger and batteries, the charging time will become as shown in Table 3.

Table 3 Charging time (At 20°C)

Battery\Charger	UC24YFA
EB1814 Approx. 40 min.
EB18B, EB1820 Approx. 50 min.
EB1830H Approx. 70 min.

NOTE

The charging time may vary according to temperature and power source voltage.

1. Disconnect the charger's power cord from the receptacle.

2. Hold the charger firmly and pull out the battery.

NOTE

After operation, pull out batteries from the charger first, and then keep the batteries properly.

Regarding electric discharge in case of new batteries, etc.

As the internal chemical substance of new batteries and batteries that have not been used for an extended period is not activated, the electric discharge might be low when using them the first and second time. This is a temporary phenomenon, and normal time required for recharging will be restored by recharging the batteries 2 – 3 times.

How to make the batteries perform longer.

(1) Recharge the batteries before they become completely exhausted.

When you feel that the power of the tool becomes weaker, stop using the tool and recharge its battery. If you continue to use the tool and exhaust the electric current, the battery may be damaged and its life will become shorter.

(2) Avoid recharging at high temperatures.

A rechargeable battery will be hot immediately after use. If such a battery is recharged immediately after use, its internal chemical substance will deteriorate, and the battery life will be shortened. Leave the battery and recharge it after it has cooled for a while.

CAUTION

○If the battery is charged while it is heated because it has been left for a long time in a location subject to direct sunlight or because the batetery has just been used, the pilot lamp of the charger lights up green. In such a case, first let the battery cool, then start charging.

When the pilot lamp flickers in red (at 0.2-second intervals), check for and take out any foreign objects in the charger's battery installation hole. If there are no foreign objects, it is probable that the battery or charger is malfunctioning. Take it to your authorized Service Center.

○Since the built-in micro computer takes about 3 seconds to confirm that the battery being charged with UC24YFA is taken out, wait for a minimum of 3 seconds before reinserting it to continue charging.

If the battery is reinserted within 3 seconds, the battery may not be properly charged.

PRIOR TO OPERATION

1. Setting up and checking the work environment

Check if the work environment is suitable by following the precautions.

2. Prepare a wooden workbench (Fig. 11)

Since the saw blade will extend beyond the lower surface of the lumber, place the lumber on a workbench when cutting. If a square block is utilized as a workbench, select level ground to ensure it is properly stabilized. An unstable workbench will result in hazardous operation.

CAUTION

To avoid possible accident, always ensure that the portion of lumber remaining after cutting is securely anchored or held in position.

ADJUSTING THE SAW PRIOR TO USE

CAUTION

Pull out battery before doing any adjusting.

1. Adjusting the cutting depth

As shown in Fig. 12, hold the handle with one hand while loosening the knob with the other.

The cutting depth can be adjusted by moving the base to the desired position. In such manner adjust the cutting depth and then securely retighten the knob.

2. Adjusting the riving knife

Loosen the hexagonal - head bolt used to clamp the riving knife, adjust the riving knife to the position shown in Fig. 13 and securely retighten the bolt.

3. Adjusting the angle of inclination

As shown in Fig. 14 (A), Fig. 14 (B) by loosening the knob on the incline gauge and the wing-bolt on the base, the saw blade may be inclined to a maximum angle of 45^ in relation to the base. After having completed the adjustment, reconfirm that the knob and the wing bolt are firmly tightened.

NOTE:

Values of the inclined gauge provided on the base merely serve as a rough guideline. For cutting operation at an inclined posture, use the circular saw after adjusting the angle between the base and the saw blade with a protractor, etc.

4. Adjusting the guide piece

On the circular saw, it is possible to make fine adjustment of the fixing position of the guide piece, where the saw blade and the premarked line are to be aligned.

When the saw is shipped from the factory, the linear portion of a front scale on the guide piece is aligned with the central position of the saw blade. (Fig. 15)

Loosen the fixed screw on the guide piece, should the fixing position be wrong, and make necessary adjustment of the position.

NOTE:

For cutting operation at the inclination of 45 degrees, make adjustment so that the notch on the guide piece and the premarked line become aligned.

5. Regulating the guide (Fig. 16)

The cutting position can be regulated by moving the guide to the left or right after loosening its wingbolt. The guide may be mounted on either the right or left side of the tool.

HOW TO USE

1. Operation of switch (Fig. 17) (switch trigger and light swi

(1) For safe operation of the machine, a "switch lock" is provided on the side of a handle.

If the "switch trigger" is pulled in a state where "switch lock" is pressed in the direction of the arrow mark, the main switch can be turned ON. And the "switch lock" is used as the "light switch". If the "switch lock (light switch)" is pressed in a state, the light is turned ON.

(2) After the switch is turned ON, even when you release your hand from the switch lock, the body continues running and the light continues being turned ON as long as you keep on pulling the switch trigger.

(3) If you release the switch trigger, you can turn OFF the switch and the "switch lock" returns to the original position automatically and the light turns OFF too.

CAUTION:

○Do not fix and secure the switch lock. Besides, keep your finger off the switch trigger when the circular saw is being carried around. Otherwise, the main body switch can be inadvertently turned ON, resulting in unexpected accidents.

Keep the light ON during cutting operation only. If it is lit ON in other cases, the main body switch can be inadvertently turned ON, resulting in unexpected accidents.

○If the main body is left as it is with the battery inserted, there can be a case where the [switch lock] touches the floor and/or wall surface and lights up continuously, depending on the direction of the body. Be careful, since continuous lighting can easily make a full-charged battery go dead in about 3 hours."

2. Cutting procedures

CAUTION:

○Recheck that the saw blade is securely clamped.

○Confirm that the knob for adjusting the slot depth, the knob and the wing bolt for adjusting the angle of inclination.

(1) Place the base on the material, then align the premarked line and the sawblade with the guide piece front scale section at the front of the base. (Fig. 15)

When the base is not slanted, use the large cutout as the guide. (Fig. 15, Fig. 18(A))

If the base is slanted (45 degrees), use the small front scale as the guide. (Fig. 15, Fig. 18(B))

(2) Ensure that the switch is turned to the ON position before the saw blade comes in contact with the lumber. The switch is turned ON when the trigger is squeezed; and OFF when the trigger is released. Moving the saw straight at a constant speed will produce optimum cutting.

CAUTIONS

Before starting to saw, ensure that the saw blade has reached full speed revolution.
○Should the saw blade be stopped or made an abnormal noise during operation, turn off the switch immediately.
When finished with a job, pull out the battery from the main body.
○Twisting and forcibly pressing the saw during cutting can result in unreasonable pressure on the motor, so try to go straight quietly.
○In the situation where the circular saw is continuously operated while replacing the battery with stocked spare batteries one after another, the motor tends to overheat. Therefore, whenever the housing becomes hot, give the saw a break for a while.
○Avoid cutting operation in a state where the base bottom is afloat from the material being cut. Otherwise, the motor can get locked.

MOUNTING AND DISMOUNTING THE SAW BLADE

CAUTION

To avoid serious accident, ensure the switch is in the OFF position, and pull out the battery.

1. Dismounting the saw blade

(1) Set the cutting volume at maximum, and place the Circular Saw as shown in Fig. 19.
(2) Depress the lock lever, lock the spindle, and remove the hexagonal-head bolt and washer (B) with the box wrench.
(3) While holding the safety cover lever to keep the safety cover fully retracted into the saw cover, remove the saw blade. (Fig. 20)

2. Mounting the Saw Blade:

CAUTION:

If the bolt is worked using other tools than the provided box wrench, excessive tightening and insufficient tightening may take place resulting in injury.

(1) Thoroughly remove any sawdust which has accumulated on the spindle, bolt and washers.

(2) As shown in Fig. 21, the side of Washer (A) with a projected center the same diameter as the inner diameter of the saw blade and the concave side of Washer (B) must be fitted to the saw blade sides.

* Washer (A) is supplied for 2 types of saw blades with the hole diameters of 16 mm and 30 mm. (When buying the Circular Saw, one type of washer (A) is applied.) In case the hole diameter of your saw blade does not correspond to that of washer (A), please contact the shop where you purchased the Circular Saw.

(3) To assure proper rotation direction of the saw blade, the arrow direction on the saw blade must coincide with the arrow direction on the saw cover.

(4) Using the fingers, tighten the hexagonal-head bolt retaining the saw blade as much as possible. Then depress the lock lever, lock the spindle, and thoroughly tighten the hexagonal-head bolt.

CAUTION

After having attached the saw blade, reconfirm that the lock lever is firmly secured in the prescribed position.

REPLACING LIGHT BULB

CAUTION:

○Make absolutely sure that the battery is removed from the main body before replacing the light bulb.
○Immediately after the light is turned OFF, the bulb retains high temperature. Make sure to cool down the light bulb thoroughly before replacing it so as to prevent burns.
○When replacing the light bulb, check the shape of base as well as the rating (12 V, 5 W), and then carry out perfect mounting. Otherwise, the light bulb can come off and/or cause overheat.

1. Detaching light bulb

(1) Remove the convex part of the light cover from the concave part of the handle cover, and then pull out the light cover in the arrow-marked direction as shown in Fig. 22.
(2) Push the back of the socket, and remove the socket and the light bulb together from the handle cover (Fig. 23).
(3) Remove the light bulb from the socket. (Fig. 24).

2. Attaching light bulb

Take procedures here that are contrary to the detaching procedures.

NOTE:

○When attaching the light bulb to the socket, insert the light bulb until it lightly bumps against the socket.
When attaching the socket to the handle cover, align the socket with the hole of housing while watching the back of the socket shown in Fig. 24, and insert the socket until it lightly bumps against the handle cover.

MAINTENANCE AND INSPECTION

CAUTION:

Pull out battery before doing any inspection or maintenance.

1. Inspecting the saw blade:

Since use of a dull saw blade will degrade efficiency and cause possible motor malfunction, sharpen or replace the saw blade as soon as abrasion is noted.

CAUTION:

If a dull saw blade is used, reactive force is increased during cutting operation. Avoid the use of the dull saw blade without repair.

2. Inspecting the mounting screws:

Regularly inspect all mounting screws and ensure that they are properly tightened. Should any of the screws be loose, retighten them immediately. Failure to do so could result in serious hazard.

3. Maintenance of the motor

The motor unit winding is the very "heart" of the power tool. Exercise due care to ensure the winding does not become damaged and/or wet with oil or water.

4. Inspecting the carbon brushes (Fig. 25)

The motor employs carbon brushes which are consumable parts. Since and excessively worn carbon brush can result in motor trouble, replace the carbon brush with new ones when it becomes worn to or near the "wear limit". In addition, always keep carbon brushes clean and ensure that they slide freely within the brush holders.

NOTE:

When replacing the carbon brush with a new one, be sure to use the Hitachi Carbon Brush Code No. 999058.

5. Replacing carbon brushes

Take out the carbon brush by first removing the brush cap and then hooking the protrusion of the carbon brush with a flat head screw driver, etc., as shown in Fig. 27.

When installing the carbon brush, choose the direction so that the nail of the carbon brush agrees with the contact portion outside the brush tube. Then push it in with a finger as illustrated in Fig. 28. Lastly, install the brush cap.

CAUTION:

Be absolutely sure to insert the nail of the carbon brush into the contact portion outside the brush tube. (You can insert whichever one of the two nails provided.)

Caution must be exercised since any error in this operation can result in the deformed nail of the carbon brush and may cause motor trouble at an early stage.

6. Performance checkup and maintenance of safety cover

Keep the safety cover in good shape for smooth performance at all times. Be sure to make prompt repair in case of any malfunction.

7. Adjusting the base and saw blade to maintain perpendicularity:

The angle between the base and the saw blade has been adjusted to 90^ , however should this perpendicularity be lost for some reason, adjust in the following manner:

(1) Turn the base face up (Fig. 29) and loosen the knob and wing-nut.

(2) Apply a square to the base and the saw blade and turning the slotted set screw with a slotted-head screwdriver, shift the position of the base to produce the desired right angle.

8. Check for dust

Dust may be removed with a clean rag or a cloth dampened with soapy water.

Do not use bleach, chlorine, gasoline or thinner, for they may damage the plastics.

9. Storage

Storing in a place below 40^ C and out of the reach of children.

10. Service and repairs

All quality power tools will eventually require servicing or replacement of parts because of wear from normal use. To assure that only genuine replacement parts must be used, all service and repairs must be performed by a HITACHI AUTHORIZED SERVICE CENTER, ONLY.

11. Service parts list

A: Item No.
B: Code No.
C: No. Used
D: Remarks

CAUTION

Repair, modification and inspection of Hitachi Power Tools must be carried out by an Hitachi Authorized Service Center.

This Parts List will be helpful it presented with the tool to the Hitachi Authorized Serivde Center when requesting repair or other maintenance.

In the operation and maintenance of power tools, the safety regulations and standards prescribed in each country must be observed.

MODIFICATIONS:

Hitachi Power Tools are constantly being improved and modified to incorporate the latest technological advancements.

Accordingly, some parts (i.e. code numbers and/or design) may be changed without prior notice.

NOTE

Due to HITACHI's continuing program of research and development, the specifications herein are subject to change without prior notice.

Information concerning airborne noise and vibration The measured values were determined according to EN50144.

The typical A-weighted sound pressure level: 96 dB (A)

The typical A-weighted sound power level: 109 dB (A)

Wear ear protection.

The typical weighted root mean square acceleration value does not exceed 2.5 m/s^2 .

A B C D	A B C D
1 600-1VV 1 6001VVCMPS2L	39 319-904 1
2 958-130 1	40 - - - - 1
3 302-742 1 "2, 5, 6"	41 319-820 1
4 - - - - 1	42 302-454 1
5 961-729 1	43 608-VVM 1 608VVC2PS2L
6 949-794 2 M6x20	44 311-435 1
7 319-829 1	45 360-554 1 "1, 43, 44"
8 302-433 1	46 302-453 1
9 961-807 1	47 319-834 1
10 600-3VV 1 6003VVCMPS2L	48 - - - - 1
11 302-461 1	49 319-819 1
12 302-463 1	50 319-828 1
13 302-435 1	51 319-832 1
14 990-430 2 M4x10	52 319-827 1
15 1 302-476 1 D30	53 999-058 2
15 2 302-443 1 D16	54 319-833 2
16 1 302-409 1 165MM-D30	55 319-821 1
16 2 302-407 1 165MM-D16	56 319-826 1
17 302-423 1	57 959-141 1
18 302-427 1 M8x15.5	58 319-818 1
19 302-458 2	59 319-831 1
20 676-531 1	60 962-569 2
21 949-433 2	61 960-108 2 D4x60
22 319-830 1	62 1 319-835 1 EB1820
23 303-838 1	62 2 319-765 1 EB1830H
24 302-468 1 M8x10	63 308-479 1
25 992-013 2 M5x14	64 949-686 1 D6x40
26 303-800 1 M8	65 317-200 1 M4x8
27 302-464 1	66 316-246 1
28 304-043 1 M4x10	67 302-457 1 M8x30
29 302-086 8 D4x20	68 308-480 2 D6x17
30 997-234 3 M5x35	69 316-443 1 "19, 21, 63, 65-68,
31 319-820 1
32 319-822 1	70 949-425 1 M6
33 319-824 1	71 302-459 1 M6x17
34 319-825 1	72 301-806 1
35 958-715 1 D4x10	73 302-469 1 M6x6
36 319-823 1	501 319-836 1
37 301-631 1	502 UC24YFA 1
38 317-207 1	503 302-478 1 13MM
	504 302-756 1

Line drawing of a quill pen in an inkwell (no text or symbols)

Line drawing of a quill pen in an inkwell (no text or symbols)

Line drawing of a quill pen in an inkwell (no text or symbols)

Svenska		Suomi
EF-DEKLARATION BETRÄFFANDE LIKFORMIGHETVi tillkännagiver med eget ansvar att denna produkt överensstämmer med standard eller standardiserat dokument EN50144, HD400 och/eller EN55014-2 i enlighet med råddirektiven 89/336/E∅S och/eller 98/37/E∅S.* Denna deklaration gäller för CE-märkningen på produkten.		EY-ILMOITUS YHDENMUKAISUUDESTAYksinomaisella vastuudella vakuutamme, että tämä tuote vastaa normeja tai normitettuja dokumentteja EN50144, HD400 ja/tai EN55014-2 yhteisön ohjeiden 89/336/ETY ja/tai 98/37/ETY mukaisesti.* Tämä ilmoitus sovelletaan tuotekohtaiseen CE-merkintään.
Dansk		English
EF-DEKLARATION OM ENSARTETHEDVi eklærer os fuldstændige ansvarlige for, at dette produkt modsvarer gældende standard eller de standardiserede dokumenter EN50144, HD400 og/eller EN55014-2 i overensstemmelse med EF-direktiver 89/336/E∅F og/eller 98/37/E∅F.* Denne erklæring gælder produkter, der er mærket med CE.		EC DECLARATION OF CONFORMITYWe declare under our sole responsibility that this product is in conformity with standards or standardized documents EN50144, HD400 and/or EN55014-2 in accordance with Council Directives 89/336/EEC and/or 98/37/EEC.* This declaration is applicable to the product affixed CE marking.
Norsk
EF's ERKLÆRING OM OVERENSSTEMMELSEVierklærerherved at vi påtar oss eneansvaret for at dette produktet er i overensstermmelse med normer eller standardiserte dokumenter EN 50144, HD400 og/eller EN55014-2 i samsvar med Rådsdirektiver 89/336/E∅S og/eller 98/37/E∅S.* Denne erklæringen gjelder produktets påklistrede CE-merking.
Hitachi Power Tools Europe GmbHSiemensring 34, 47877 Willich, F. R. GermanyHitachi Koki Co., Ltd.Shinagawa Intercity Tower A, 15-1, Konan 2-chomeMinato-ku, Tokyo, Japan			CE01J. HiranoY. Hirano

Hitachi Koki Co., Ltd.