Description
Yato cordless mortar mixer 18V BL is a two-speed, two-handed cordless mixer for mixing mortars, paints, adhesives, fillers and other fluid or semi-fluid building materials. The body-only version YT-82877 is supplied without a battery or charger and runs on Yato 18 V system Li-Ion batteries.
The gearbox has two speed ranges: 1st gear 0–450 min⁻¹ and 2nd gear 0–720 min⁻¹. The speed range is selected with the switch on the front of the machine, and the numbered dial on the handle sets the spindle speed steplessly within the selected range. The soft start protects the gearbox and reduces splashing of the mix.
The mixing paddle is attached to the spindle with an M14 thread, and the paddle basket diameter may be up to 120 mm. A two-part universal mixing paddle is supplied, whose shaft is screwed into the basket and tightened with spanners. The spindle turns clockwise; the paddle is chosen according to whether air should be mixed into the mix or removed from it.
The unit has a brushless motor, whose power according to the manufacturer’s declaration of conformity is 1850 W. The tool weighs 4.4 kg without the battery. The operating switch lock prevents accidental starting of the spindle. The sound pressure level is 83 dB(A), the vibration value 5.02 m/s² and the operating temperature -10…+40 °C.
Uses and suitability:
The Yato cordless mortar mixer 18V BL is intended for mixing fluid building materials in a container in places where mains power is not available or a cable would get in the way.
- Mortars and fillers: Mixing masonry, plastering and tile mortars and fillers in a bucket or tub; 1st gear 0–450 min⁻¹ gives torque for thick mixes.
- Adhesives: Mixing tile and construction adhesives smooth before application; the soft start reduces splashes on the edges of the container.
- Paints and coatings: Mixing paints, primers and waterproofing compounds; the speed is chosen according to the mix manufacturer’s instructions.
- Sites without mains power: Renovation and new-build sites, where battery operation removes the risk of tripping and tangling with an extension cable around the mixing container.
The mixer belongs to the Yato 18 V battery system. Suitable power sources are the Yato 18V Li-Ion battery and Yato battery charger 18V 2.2A. For lighter mixing with one speed range, use the Yato cordless mortar mixer 18V, body only.
Package contents:
- Yato cordless mortar mixer 18 V BL (body only, YT-82877)
- Universal mixing paddle M14 (shaft and basket)
- Spanners for tightening the mixing paddle
- Instruction manual
Battery and charger are not included.
Features:
- Two-speed gearbox: Speed ranges 0–450 and 0–720 min⁻¹; the lower range for thick and heavy mixes, the higher for more fluid materials.
- Variable speed control: The numbered dial on the handle sets the spindle speed within the selected speed range.
- Soft start: The speed rises gradually, which protects the gearbox and reduces splashing of the mix.
- Brushless motor: No carbon brushes to replace.
- M14 mounting: Takes M14-threaded mixing paddles with a basket diameter of up to 120 mm.
- Operating switch lock: The lock-off button must be pressed before the operating switch, which prevents accidental starting of the spindle.
- Two handles: The mixer is guided with both hands, and the shape of the handle allows working without bending over.
- Yato 18 V battery system: Uses batteries YT-828461–YT-828465, which also fit the other tools in the range.
Technical specifications:
- Voltage: 18 V DC.
- Power: 1850 W (declaration of conformity).
- Speed: 1st gear 0–450 min⁻¹, 2nd gear 0–720 min⁻¹.
- Speed range selection: switch on the front of the machine (2 ranges).
- Speed control: stepless, numbered dial on the handle.
- Motor: brushless (BL).
- Mixing paddle mounting thread: M14.
- Maximum paddle basket diameter: 120 mm.
- Spindle rotation direction: clockwise.
- Battery type: Li-Ion 18 V (not included).
- Compatible batteries: YT-828461, YT-828462, YT-828463, YT-828464, YT-828465.
- Number of batteries in the set: no battery.
- Charger in the set: no.
- Operating temperature: -10…+40 °C.
- Sound pressure level LpA: 83.0 ± 3.0 dB(A).
- Sound power level LwA: 91.0 ± 3.0 dB(A).
- Vibration ah: 5.02 ± 1.5 m/s².
- Tool weight: 4.4 kg (without battery).
- Standards: EN 62841-1:2015 + A11:2022, EN 62841-2-10:2017, EN IEC 55014-1:2021, EN IEC 55014-2:2021.
Instructions for using the Yato cordless mortar mixer 18V BL:
Fitting the mixing paddle: Remove the battery. Screw the shaft into the paddle basket and tighten the joint firmly with the spanners. Screw the assembled paddle onto the spindle and tighten the joint with the spanners. Use only M14 mixing paddles with a basket diameter of up to 120 mm; do not use adapters.
Selecting the speed: Select the speed range with the switch on the front and set the speed with the dial on the handle; a higher number means a higher speed. Follow the mix manufacturer’s instructions. As a general rule, thin mixes are mixed at a lower speed than thick ones.
Starting: Make sure the operating switch is off, and slide the battery into place along the guides until the latch locks. Place the mixing paddle in the container so that it does not touch anything, and hold both handles. Press the lock-off button with your thumb and then the operating switch with your index finger; once the spindle is turning, you do not need to hold the lock-off button. Check the fixing of a new or replaced mixing paddle by letting the machine run for 30 seconds without load.
Stopping: Release the operating switch and keep the mixing paddle in the container until the spindle has stopped completely. Remove the battery before maintenance.
Maintenance: Clean the mixing paddle straight after use with a solvent suitable for the mix, rinse with water and dry. Clean the housing and ventilation openings with a soft brush, a dry cloth or compressed air (max. 0.3 MPa) without chemicals. During the warranty period, the unit must not be dismantled and no parts may be added to it.
Warnings:
- Hold the mixer with both hands by the handles intended for this; loss of control can cause injury.
- Do not reach into the mixing container with your hands or put objects into it during mixing. Start and stop the mixer only in the container.
- Make sure the mixing container is stable and supported. Keep hair, loose clothing and jewellery away from the rotating mixing paddle.
- Wear safety glasses and ear defenders (LpA 83 dB(A)) and, if needed, respiratory protection, gloves and an apron; follow the safety data sheet of the material being mixed.
- When mixing flammable materials, ensure adequate ventilation; sparks from the tool can ignite vapours.
- Do not mix food or loose bulk materials, and do not attach grinding, polishing or drilling accessories to the spindle.
- Prevent liquid from splashing into the housing. If the machine falls into the mix, remove the battery immediately and have the machine checked at a service centre.
- Do not use a damaged, cracked or bent mixing paddle. The mixing paddle keeps turning for a moment after switching off.
- Do not use or charge a damaged battery; protect the battery terminals from short circuits and heat above 130 °C.
Frequently asked questions (FAQ):
Is a battery or charger included with the Yato cordless mortar mixer 18V BL body? No. YT-82877 is supplied without a battery or charger; the universal mixing paddle and spanners are included.
Which mixing paddles fit the mixer? M14-threaded mixing paddles with a basket diameter of up to 120 mm and a maximum permitted speed higher than 720 min⁻¹. Adapters must not be used.
Which gear is used for mortar and which for paint? The choice is made according to the mix manufacturer’s instructions. According to the manufacturer’s general recommendation, thin mixes are mixed at a lower speed than thick mixes.
Which batteries and chargers fit the Yato cordless mortar mixer 18V BL? Yato 18 V Li-Ion batteries YT-828461–YT-828465, charged with Yato chargers YT-828498–YT-828504.
Why is the machine run empty with a new mixing paddle? Running empty for 30 seconds in a safe position reveals incorrect fixing or damage; if there is strong vibration, stop the machine and check the fitting.
Recycling instructions:
The Yato cordless mortar mixer 18V BL is an electrical device that must not be disposed of with mixed waste. Take a discarded unit to a waste electrical and electronic equipment (WEEE) collection point. Take Li-Ion batteries to a battery collection point with the terminals taped; damaged batteries must not be transported. Sort the cardboard packaging into cardboard collection. Clean mix residues off the mixing paddle and sort it into metal collection; dispose of mix residues according to the manufacturer’s instructions.







