Introduction
This manual provides essential instructions for the safe operation, maintenance, and troubleshooting of your Yato YT-82786 18V Cordless Hammer Drill. Please read this manual thoroughly before using the tool to ensure proper function and to prevent injury.
General Safety Warnings
- Always wear appropriate personal protective equipment, including eye protection, hearing protection, and gloves.
- Ensure the work area is well-lit and clear of obstructions.
- Keep children and bystanders away while operating the power tool.
- Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Disconnect the battery pack from the tool before making any adjustments, changing accessories, or storing the tool.
Product Overview
The Yato YT-82786 is an 18V cordless hammer drill designed for drilling, hammer drilling, and screwdriving applications. It features a robust metal chuck and a two-speed gearbox for versatile performance.
Figure 1: Yato YT-82786 Cordless Hammer Drill. This image displays the complete drill with its battery attached, highlighting its red and black casing, keyless chuck, and ergonomic handle.
Key Components
- Keyless Metal Chuck: For quick and easy bit changes.
- Torque Adjustment Ring: To select the desired torque setting for screwdriving or drilling mode.
- Mode Selector: To switch between screwdriving, drilling, and hammer drilling modes.
- Speed Selector Switch: For high or low-speed operation.
- Trigger Switch: Controls the tool's speed and power.
- Forward/Reverse Switch: Changes the rotation direction.
- LED Work Light: Illuminates the work area.
- Battery Pack: Provides power to the tool.
- Belt Clip: For convenient carrying.
Setup
1. Battery Charging
The battery pack is not fully charged at the time of purchase. It must be fully charged before first use.
- Connect the charger to a standard power outlet.
- Slide the battery pack onto the charger until it clicks into place.
- The charging indicator light on the charger will show the charging status. A full charge typically takes 60 minutes for the 2Ah battery.
- Once fully charged, disconnect the battery from the charger and unplug the charger from the outlet.
2. Battery Installation and Removal
- Installation: Align the battery pack with the base of the drill handle and slide it in until it locks securely.
- Removal: Press the battery release button (usually located on the sides of the battery pack) and slide the battery pack out.
3. Installing and Removing Drill Bits/Screwdriver Bits
- Ensure the battery pack is removed from the tool before changing bits.
- Rotate the keyless metal chuck counter-clockwise to open the jaws.
- Insert the desired drill bit or screwdriver bit into the chuck, ensuring it is centered.
- Rotate the chuck clockwise to tighten the jaws firmly around the bit. Hand-tighten only; do not use tools to tighten the chuck.
- To remove a bit, rotate the chuck counter-clockwise and pull the bit out.
Operating Instructions
1. Selecting Operating Mode (Screwdriving, Drilling, Hammer Drilling)
The mode selector ring is located behind the chuck. Rotate it to select the appropriate icon:
- Screwdriving Mode (⚙): For driving and removing screws. Use with the torque adjustment ring.
- Drilling Mode (⚒): For drilling into wood, metal, and plastic. The hammer function is disengaged.
- Hammer Drilling Mode (⚒⚡): For drilling into masonry and concrete. The hammer function is engaged.
2. Adjusting Torque (Screwdriving Mode Only)
The torque adjustment ring has 21 settings plus a drill setting. Select a lower torque setting for smaller screws or softer materials to prevent overtightening or stripping. Use higher settings for larger screws or harder materials. The drill setting provides maximum torque for drilling.
3. Selecting Speed
The speed selector switch is located on top of the drill. It has two positions:
- Position 1 (Low Speed): 0-440 RPM. Ideal for screwdriving, larger drill bits, or applications requiring higher torque.
- Position 2 (High Speed): 0-1650 RPM. Suitable for smaller drill bits and faster drilling in softer materials.
4. Forward/Reverse Rotation
The forward/reverse switch is located above the trigger. Push it to the left for forward rotation (clockwise) and to the right for reverse rotation (counter-clockwise). Ensure the switch is in the center position to lock the trigger and prevent accidental starting.
5. Starting and Stopping the Tool
- To start the tool, press the trigger switch. The speed is variable depending on how far the trigger is pressed.
- To stop the tool, release the trigger switch.
- The integrated LED work light will illuminate when the trigger is pressed.
6. Using the Belt Clip
The belt clip allows for convenient temporary storage of the tool on a belt or pocket. Ensure the tool is switched off and the trigger locked before using the belt clip.
Maintenance
Regular maintenance ensures optimal performance and extends the life of your tool.
Cleaning
- Always disconnect the battery pack before cleaning.
- Use a soft, damp cloth to wipe down the exterior of the tool. Do not use harsh chemicals or abrasive cleaners.
- Keep the ventilation openings clear of dust and debris to prevent overheating. Use compressed air if necessary.
- Clean the chuck jaws regularly to ensure proper gripping of bits.
Storage
- Store the tool and battery pack in a cool, dry place, away from direct sunlight and moisture.
- Ensure the battery pack is partially charged (around 50%) before long-term storage.
- Store out of reach of children.
Battery Care
- Do not store battery packs in temperatures above 50°C (122°F) or below -20°C (-4°F).
- Avoid fully discharging the battery pack frequently, as this can reduce its lifespan.
- If the battery pack becomes hot during use, allow it to cool down before recharging.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start. | Battery not charged or improperly installed. Forward/reverse switch in center (locked) position. | Charge battery. Reinstall battery securely. Move forward/reverse switch to forward or reverse position. |
| Reduced power or speed. | Battery charge is low. Tool is overloaded. | Recharge battery. Reduce pressure on the tool or use a sharper bit. |
| Chuck not holding bit securely. | Chuck jaws are dirty or worn. Bit shank is dirty or damaged. | Clean chuck jaws. Ensure bit shank is clean and undamaged. Tighten chuck firmly. |
| Excessive vibration or noise. | Damaged bit. Loose components. | Replace damaged bit. Check for loose parts; if persistent, contact service. |
| Hammer function not engaging. | Mode selector not set to hammer drilling. | Rotate mode selector to the hammer drilling icon. |
Specifications
| Feature | Detail |
|---|---|
| Model | YT-82786 |
| Brand | Yato |
| Voltage | 18 V |
| No-load Speed (Gear 1) | 0-440 RPM |
| No-load Speed (Gear 2) | 0-1650 RPM |
| Impact Rate (Gear 1) | 0-7920 BPM |
| Impact Rate (Gear 2) | 0-29700 BPM |
| Maximum Torque | 40 Nm |
| Motor Type | JD755 |
| Chuck Type | 13 mm Keyless Metal Chuck |
| Torque Settings | 21 + 1 (Drill) + 1 (Hammer) |
| Features | LED Light, Belt Clip |
| Battery Capacity (Included) | 2 Ah |
| Charger Time | 60 minutes (for 2Ah battery) |
| Dimensions (L x W x H) | 11.5 x 6.83 x 4.04 cm |
| Weight | 2.64 kg |
| Material | Metal (gears) |
Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or contact Yato customer service directly. Keep your purchase receipt as proof of purchase.
Manufacturer: Yato
Model Number: YT-82786
ASIN: B07D38CB2W
