1. Kupu Whakataki
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your HiKOKI 18V Cordless Impact Driver, model WH18DC. Please read this manual thoroughly before using the tool and keep it for future reference.
Āhuatanga matua:
- Triple Hammer Mechanism: Designed for efficient and fast screw tightening.
- Hoahoa Kiato: Features a head length of 114mm for improved maneuverability in tight spaces.
- Māmā: Weighs approximately 1.6kg (when equipped with BSL36A18 battery) for reduced user fatigue.
- Mana Whakarei: Motor control prevents locking at low speeds, allowing for continuous operation and precise delicate work.
- Reduced Bit Wobble: Minimizes bit run-out and cam-out, making one-handed operation easier and preventing screws from falling.
- 3-Light LED: Provides wide-area illumination, reducing shadows around the bit for better visibility in dark environments.
- Aratau Mahi Maha: Offers various modes to optimize work efficiency for different applications.
- Mauroa: Dustproof and waterproof with an IP56 rating.
2. Nga korero haumaru
Always observe basic safety precautions to reduce the risk of fire, electric shock, and personal injury when operating power tools. Keep this information accessible for all users.
Aratohu Haumaru Whanui:
- Haumaru Wāhi Mahi: Kia ma to waahi mahi me te whakamarama pai. Ko nga waahi pouri, nga waahi pouri ranei ka pa mai nga aitua. Kaua e whakamahia nga taputapu hiko i roto i nga hau pupuhi, penei i te waahi o te wai ka mura, te hau, te puehu ranei.
- Haumaru Hiko: A ape i te pa atu ki te tinana ki nga papa whenua, ki runga ranei. Kaua e tukuna nga taputapu hiko ki te ua, te makuku ranei.
- Haumaru Whaiaro: Mau tonu te whakamarumaru kanohi. Whakamahia he whakamarumaru whakarongo ina mahi mo te wa roa. Kia tika te kakahu; karohia nga kakahu taratara me nga whakapaipai. Haumaru makawe roa.
- Te Whakamahi me te Tiaki Taputapu: Kaua e kaha te taputapu hiko. Whakamahia te taputapu tika mo to tono. Momotuhia te putea pākahiko mai i te taputapu hiko i mua i te whakarereketanga, te whakarereke i nga taputapu, te penapena taputapu hiko ranei.
- Te Whakamahi me te Tiakitanga o te Pukahiko: Recharge only with the charger specified by the manufacturer. Do not use battery packs with power tools for which they are not intended.
3. Ihirangi mokete
Upon opening the package, ensure all items are present and undamaged. The standard package for the WH18DC (NNB) model typically includes:
- HiKOKI 18V Cordless Impact Driver WH18DC (Main Unit)
- Pukapuka Kaiwhakamahi (tenei tuhinga)
Note: Battery, charger, carrying case, and bits are sold separately for this model.
4. Nga Wahanga Tohu
Familiarize yourself with the components of your HiKOKI WH18DC Impact Driver.

Whakaahua 4.1: Mua view of the HiKOKI WH18DC 18V Cordless Impact Driver in Strong Black. This image displays the main body, chuck, LED lights, trigger, and handle.
- Chuck: For inserting and securing screwdriver bits.
- Rama LED: Three integrated lights illuminate the work area.
- Whakawhiti Keu: Controls the tool's power and speed.
- Whakawhiti Whakamua/Whakamuri: Ka huri i te ahunga hurihuri.
- Kaitono Aratau: Allows selection of different operating modes (Soft, Power, Bolt, Tex).
- Tauranga Pūhiko: For attaching the 18V battery pack.
- Matau whitiki: Convenient for temporary storage during work.
5. Tatūnga
5.1. Tāuta Pūhiko
- Ensure the impact driver is switched off and the forward/reverse switch is in the neutral (locked) position.
- Whakahāngaihia te putea pākahiko ki te putanga pākahiko kei te turanga o te taputapu.
- Kiriatahia te putea pākahiko ki te waahi kia pao noa, e tohu ana kua maukati pai.
- To remove, press the battery release button and slide the battery pack off.
5.2. Tāutanga Moka
- Me mohio kua tangohia te pākahiko mo te haumaru.
- Toia te ringaringa pupuhi ki mua.
- Insert the desired screwdriver bit fully into the chuck.
- Release the chuck sleeve. The bit should be securely held. Gently pull on the bit to confirm it is locked in place.
- To remove, pull the chuck sleeve forward and pull the bit out.

Whakaahua 5.1: A hand demonstrating the proper grip and bit insertion for the HiKOKI 18V Impact Driver. This image highlights the tool's compact design and ease of handling.
6. Nga Tohutohu Whakahaere
6.1. Te Hia/Weto me te Mana Tere
- To turn on the tool, press the trigger switch. The speed is variable depending on how far the trigger is pressed.
- Hei whakaweto, tukuna te pana keu.
6.2. Huri Whakamua/Whakamuri
The forward/reverse switch is located above the trigger. Push it to the left for forward rotation (tightening) and to the right for reverse rotation (loosening). The center position locks the trigger for safety.
6.3. Tīpakonga Aratau
The WH18DC features multiple operating modes to suit various tasks. Select the appropriate mode using the mode selector button, typically located near the base of the handle or on the tool head.

Whakaahua 6.1: A visual representation of the WH18DC's diverse operating modes, including Soft, Power, Bolt (continuous/single), and Tex modes. This image also illustrates the optional color plates for customization.
- Aratau ngawari: For delicate work or when precise control is needed to prevent overtightening.
- Aratau Hiko: For general fastening tasks requiring higher torque.
- Bolt Mode (Continuous/Single): Optimized for tightening bolts, with options for continuous or single impacts.
- Tex Mode: Specifically designed for self-drilling screws (Tek screws).
6.4. Te Mahi a te Rama LED
The three LED lights automatically activate when the trigger is pressed, illuminating the work area. They remain on for a short period after the trigger is released to provide continued visibility.

Whakaahua 6.2: He tata view of the impact driver's head, showcasing the three integrated LED lights illuminating the workspace. This feature ensures clear visibility and reduces shadows during operation.
7. Tiaki
Mā te tiaki auau ka roa te ora me te mahi tino pai o tō taraiwa pānga.
7.1. Te horoi
- Momotuhia te putea pākahiko i mua i te horoi.
- Wipe the tool with a soft, damp kakahu. Kaua e whakamahi i nga matū kino me nga horoi horoi.
- Clean ventilation openings regularly to prevent overheating. Use compressed air if necessary.
7.2. Rokiroki
- Rokirokihia te taputapu ki te wāhi maroke, haumaru hoki, kia kore e taea e ngā tamariki te toro atu.
- Tangohia te kete pākahiko mai i te taputapu i mua i te penapena mo nga wa roa.
- Penapenahia ngā putea pākahiko ki te wāhi hauhautanga, maroke, kia matara atu i te rā tika me ngā pāmahana tino kino.
7.3. Whakatauranga IP56
The WH18DC has an IP56 rating, indicating protection against dust ingress and high-pressure water jets from any direction. While this offers significant protection, it is not designed for submersion in water. Always ensure the battery cover is properly sealed if working in wet conditions.
8. Te Raru
Mena ka pa ki a koe nga raruraru me to taraiwa paanga, tirohia nga raruraru me nga otinga e whai ake nei:
| Raruraru | Take pea | Rongoā |
|---|---|---|
| Kaore e timata te taputapu | Ko te pākahiko kaore i te utu, kaore ranei i tika te whakauru. Kua mau te maukati keu. | Ensure battery is fully charged and correctly inserted. Disengage the trigger lock by moving the forward/reverse switch to either forward or reverse position. |
| Te iti o te mana, te mahi ranei | Low battery charge. Incorrect mode selected. Worn or damaged bit. | Recharge the battery. Select a more powerful mode (e.g., Power or Bolt). Replace the bit if it is worn. |
| Bit wobbles excessively | Bit not fully inserted. Incorrect bit type. | Ensure the bit is fully inserted and locked into the chuck. Use only hex shank bits designed for impact drivers. |
| Te werawera | Ngā mokowā hauā kua āraia. Te whakamahinga nui tonu. | Clean ventilation slots. Allow the tool to cool down during prolonged heavy use. |
If the problem persists after attempting these solutions, please contact HiKOKI customer support or an authorized service center.
9. Whakatakotoranga
Technical specifications for the HiKOKI 18V Cordless Impact Driver WH18DC:
| Āhuahira | Whakatakotoranga |
|---|---|
| Waitohu | HiKOKI |
| Tau tauira | WH18DC |
| Hunga Hua | 13 x 6 x 24 cm |
| Taumaha Tūemi | 1 kg (tool only) |
| Tae | Strong Black |
| Puna Mana | Pūhiko Powered |
| Voltage | 18.0 V |
| Max Torque | 180 N·m |
| Tere Takahuri Max | 3700 RPM |
| Te maha o nga tere | 4 (via mode selection) |
| Te Puehu/Wai Parenga | IP56 |
| Kei roto nga pākahiko | Kāo (ka hokona motuhake) |
10. Pūtāhui me te Tautoko
For detailed warranty information, please refer to the warranty card included with your product or visit the official HiKOKI website. HiKOKI provides comprehensive customer support and repair services.
Online Repair Application:
You can apply for repairs online by searching for "HiKOKI Repair" on your preferred browser and following the instructions on the official HiKOKI webpae.

Whakaahua 10.1: A visual guide to the online repair application process on the HiKOKI official website, detailing steps from repair reception to payment and confirmation.
Mōhiohio Whakapā:
For further assistance, technical support, or to locate an authorized service center, please visit the official HiKOKI webpaetukutuku, whakapā atu ranei ki ta raatau tari ratonga kaihoko.
HiKOKI Whaimana Webpae: www.hikoki-powertools.jp