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51091C/51090C

Step 2: Install the inner pressure plate without thread 
on the spindle, with a side with step downwards, and 
get it caught on the spindle
Step 3: Install the wheel on the inner pressure plate
Step 4: Drive the threaded outer pressure plate 
clockwise into the spindle
Step 5: Press and hold the spindle lock button (1 
in Figure G) to prevent the spindle from rotating. 
Tighten the outer pressure plate clockwise with the 
locking wrench(Figure H).

NOTE

(See Figure I.J)
When the thickness of wheel is greater than 3 mm, 
the side of outer pressure plate with the center boss 
is in contact with the wheel: when the thickness of 
wheel is less than or equal to 3 mm, the side of the 
outer pressure plate with the center groove is in 
contact with the wheel.

Removal of wheel:

WARNING

The axis lock can only be used when the spindle 
stops rotating.
After confirming the shutdown and unplugging the 
battery pack, repeat the above steps in reverse 
order.

OPERATION

WARNING

Do not operate the tool too hard. Excessive pressure 
may cause damage to the wheel.
If the tool falls during the operation, be sure to 
replace the wheel.
Never hit the workpiece with a backing pad or 
grinding wheel.
The bounce and blockage of wheel shall be avoided 
to prevent the wheel from rebounding, especially for 
the processing of corner or sharp edge. Timber saw 
blade and other saw blades are strictly prohibited. 
The angle grinder with these saw blades will 
frequently bounce up, and it is prone to runaway and 
cause personal injury.

NOTE

The maximum cutting depth is 5mm. Adjust the 
pressure on the tool so that the tool does not slow 
down during operation.
After the operation, be sure to close the tool and 
lower the tool only after the wheel has completely 
stopped.
When the tool keeps operating until the battery is 
exhausted, leave the tool for 15 min before replacing 
the new battery pack.

3. Switch (see Figure K)

Grasp the machine and the auxiliary handle, push the 
lock button (1) forward, and then press the switch 
trigger to start the machine.

4. Soft start

The machine has a soft start function. After the 
start, the speed of machine gradually increases until 
the maximum rotating speed. The comfort of start is 
improved.

5. Electronic brake

During the operation, when the switch is released, 
the electronic brake will start. Normally, the machine 
will stop in 2S, and occasionally it may be greater 
than 2S.

6. Grinding operation (Figure  L)

NOTE

According to the material of workpiece, the wheel 
of different material shall be selected, and the 
recommended diameter is adopted. The maximum 
rotating speed of wheel shall be more than 13000 
rpm. The inner hole shall fit the pressure plate 
tightly. Keep the working environment and workpiece 
clean and tidy.
Place one hand on the outer casing, and the other on 
the side handle, hold and start the tool, wait for the 
tool to reach the maximum rotating speed, slowly 
place the wheel on the workpiece, and then move 

Summary of Contents for 51090C

Page 1: ...18VJ 5 Li Ion Brushless Angle Grinder 5 EN OPERATION INSTRUCTION 5 51091C 51090C...

Page 2: ......

Page 3: ...V_SC_5109NC_202104 3 a 1 2 3 b 1 2 3 4 5 6 RCD RCD RCD GFCI ELCB c 1 2 3 4 5 6 7 8...

Page 4: ...4 51091C 51090C d 1 2 3 4 5 6 7 8 e 1 2 3 4 5 6 130 C f 1 2...

Page 5: ...V_SC_5109NC_202104 5 Pb Hg Cd Cr VI PBB PBDE SJ T11364 GB T 26572 GB T 26572 RoHS 2...

Page 6: ...6 51091C 51090C 1 2 3 4 5 6 7 8 9 10 51091C 51090C 5 0 1 4 0A 1 5 0Ah 80 2 5Ah 40 51091C 51090C 8000 M14 100 125 112 138 2 3 5000 80 1 2 3 4 5 7 6 10 9 8 18 V...

Page 7: ...V_SC_5109NC_202104 7 1 60 2 3 100 2 A 1 B 2 C B C H A D 2 3 1 E 1 G 1 F 1 2 3...

Page 8: ...8 51091C 51090C J 3MM K 1 2 L M N 3MM I D 1 2 2 3 1 E 1 F G H G 1 H...

Page 9: ...V_SC_5109NC_202104 9 I J 3mm 3mm 5 15 3 K 1 4 5 2S 2S 6 L 13000 20 7 M 13000...

Page 10: ...10 51091C 51090C 8 N 9 5 LED 0 25 25 50 50 75 75 100...

Page 11: ...V_SC_5109NC_202104 11 1 2 3 0 35 1 30 50 26 2 6...

Page 12: ...12 51091C 51090C...

Page 13: ...not expose the electric tool to the rain or moisture Water entering the electric tool will increase the risk of electric shock 4 Do not abuse the cord Never carry pull the electric tool with cord or...

Page 14: ...on off the power Electric tools that cannot be controlled with switches are dangerous and shall be repaired 3 Before making any adjustments replacing the accessories or storing the electric tool remo...

Page 15: ...ical assistance Liquid spilled from the battery may cause the corrosion or burning 5 Do not use damaged or modified battery packs or tools Damaged or modified battery packs may present the unpredictab...

Page 16: ...ction or recycling point It may be recycled and shall not be discarded at will The battery pack contains certain toxic and harmful substances and may be used safely during the environment friendly use...

Page 17: ...of 2 5A battery pack about 40min We recommend that you choose the accessories from the store where you purchased the electric tool Please use the high quality accessories from the well known brands Pl...

Page 18: ...ly reach about 60 After 2 3 charging and discharging cycles the battery efficiency may reach 100 2 Installation and removal of battery pack see Figure A Press the lock buttons on both sides of battery...

Page 19: ...an appropriate angle and then lock the buckle 1 Adjustment of shield Figure E When the shield is delivered it has been pre adjusted to a position where it can be tightened If the shield becomes loose...

Page 20: ...es are strictly prohibited The angle grinder with these saw blades will frequently bounce up and it is prone to runaway and cause personal injury NOTE The maximum cutting depth is 5mm Adjust the press...

Page 21: ...the incision is formed do not change the cutting angle Otherwise the wheel will be easily deformed and broken causing a risk of injury When the work is finished separate the machine from the workpiece...

Page 22: ...ch the workpiece Otherwise the wheel will be damaged and the machine will rebound 3 Why is the service life of same kind of battery pack is different If a battery pack is left unused for a long time i...

Page 23: ...ith the hand drill remove the battery pack and wrap the pole port with strong tape to avoid the short circuit and leakage Do not attempt to open or remove any part The damaged machine accessories and...

Page 24: ...Model 51091C 51090C Version No V SC 5109NC 202104 SATA TOOL SHANGHAI LIMITED 177 302 Customer service Room 302 Area A No 177 Bibo Road Pudong New Area Shanghai Post 201203 Tel 86 21 6061 1919 Fax 86 2...

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