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-Turn the grinding wheel firmly clockwise to tighten
the "M-Quick"clamping nut.
Releasing the “M-Quick” clamping nut (1):
The "M-Quick” clamping nut (1) must be
attached before the spindle locking button (4)
can hold the spindle!
-The machine continues to run after switching off.
-Press in the spindle locking button (4) just before
the grinding wheel stops. The "M-Quick"clamping
nut (1) is released.
7.4Securing/Releasing the 2-hole nut
(depending on features)
Securing the 2-hole nut (12):
The 2 sides of the two-hole nut are different.
Screw the two-hole nut onto the spindle as follows:
See illustration B on page 2.
- X) For thin grinding discs:
The edge of the 2-hole nut (12) faces upwards so
that the thin grinding disc can be attached
securely.
Y) For thick grinding discs:
The edge of the two-hole nut (12) faces
downwards so that the two-hole nut can be
attached securely to the spindle.
Z) Only for W 850-100:
The collar of the two-hole nut faces downwards
and/or the flat surface faces upwards.
-Lock the spindle. Turn the two-hole nut (12)
clockwise using the two-hole spanner (13) to
secure.
Releasing the 2-hole nut:
-Lock the spindle (see chapter 7.1). Turn the two-
hole nut (12) anticlockwise using the two-hole
spanner (13) to unscrew.
7.5Securing/releasing the (tool-free)
clamping nut
(depending on features)
Only tighten the (tool-free) clamping nut (14)
by hand!
For the machine to operate, the clip (15) must
always lie flat on the clamping nut (1).
To secure the (tool-free) clamping nut (14):
Do not use the clamping nut (tool-free) if the
accessory has a clamping shank thicker than
6mm! In this case, use the 2-hole nut (12) with 2-
hole spanner (13).
-Lock the spindle (see chapter 7.1).
-Flip up the clip (15) on the clamping nut.
-Fit the clamping nut (14) on the spindle (3). See
illustration on page 2.
-Tighten the clamping nut on the clip (15)
manually in a clockwise direction.
-Flip down the clip (15) again .
Release the (tool-free) clamping nut (14):
-Lock the spindle (see chapter 7.1).
-Flip up the clip (15) on the clamping nut.
-Unscrew the clamping nut (14), turning it
anticlockwise manually .
Note:
If the clamping nut is very tightly secured (14),
you can also use a two-hole spanner to unscrew it.
8.1Setting the speed (WEV 850-125)
Set the recommended speed using the thumbwheel
(7). (Lower number = lower speed; higher number =
higher speed)
Cutting disc, roughing disc, cup wheel and diamond
cutting disc: high speed
Brush: medium speed
Sanding plate: low to medium speed
Note: We recommend using our angle polisher for
polishing work.
8.2Switching on and off
Always guide the machine with both hands.
Switch on first, then guide the accessory
towards the workpiece.
The machine must not be allowed to draw in
additional dust and shavings. When switching
the machine on and off and keep it away from dust
deposits. After switching off the machine, only set it
down when the motor has come to a standstill.
Avoid inadvertent starts: always switch the
tool off when the plug is removed from the
mains socket or if there has been a power cut.
In continuous operation, the machine
continues running if it is forced out of your
hands. Therefore, always hold the machine with
both hands using the handles provided, stand
securely and concentrate.
Machines with a slide switch:
Switching on: push the slide switch (5) forwards.
For continuous operation, tilt it downwards until it
engages.
Switching off: press the rear end of the slide switch
(5) and release it.
Machine with paddle switch (with deadman
function):
(Machines with the designation WP...)
Switching on: Slide the switch-on lock (9) in the
direction of the arrow and press the trigger (8).
Switching off: Release the trigger switch (8).
8. Use
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Grinding and sanding operations:
Press down the machine evenly on the surface and
move it back and forth so that the surface of the
workpiece does not become too hot.
Rough grinding: position the machine at an angle of
30° - 40° for the best working results.
Cut-off grinding:
Always work against the run of the disc
(see illustration). Otherwise the
machine may kick back from the cut in
an out of control manner. Guide the
machine evenly at a speed suitable for
the material being processed. Do not tilt, apply
excessive force or sway from side to side.
Wire brushing:
Press down the machine evenly.
Particles may become deposited inside the power
tool during operation. This impairs the cooling of the
power tool. Conductive build-up can impair the
protective insulation of the power tool and create an
electrical hazard.
The power tool should be cleaned regularly, often
and thoroughly through all front and rear air vents
using a vacuum cleaner or by blowing in dry air.
Before doing so, separate the power tool from the
power source and wear protective goggles and a
dust mask. Ensure appropriate suction is available
when blowing out vents.
The machine does not start. Restart
protection is active. If the mains plug is
inserted with the machine switched on or if the
power supply is restored following an interruption,
the machine does not start up. Switch the machine
off and back on again.
WEV 850-125, WEQ 1400-125 only:
The speed drops while the machine is
under load. There is too much load on the
machine! Allow the machine to run at idle
speed until it has cooled down.
Use only genuine Metabo accessories.
See page 4.
Only use accessories which fulfil the requirements
and specifications listed in these operating
instructions.
ACutting guard clip / guard for cut-off
grinding
Designed for work with cutting disc and diamond
cutting discs. Once the cutting guard clip is fitted,
the safety guard becomes a cutting guard.
BExtraction guard for cut-off grinding
Designed for cutting through stone slabs with
diamond cutting discs. With nozzle for extracting
stone dust using a suitable extraction unit.
CHand protection
Intended for work with backing pads, sanding
plates, wire brushes and support plates, sanding
pads, wire brushes and diamond drill bits for tiles.
Install the hand guard under the additional side-
mounted handle.
DTwo hole nut (12)
EM-Quick clamping nut (1)
FClamping nut (tool-free) (14)
For a complete range of accessories, see
www.metabo.com or the accessories catalogue.
Repairs to electrical tools must ONLY be
carried out by qualified electricians!
Contact your local Metabo representative if you
have Metabo power tools requiring repairs. See
www.metabo.com for addresses.
You can download a list of spare parts from
www.metabo.com.
The sanding dust generated may contain
hazardous materials: do not dispose of dust with
household waste, but at a special collection point
for hazardous waste.
Observe national regulations on environmentally
compatible disposal and on the recycling of
machines, packaging and accessories.
Only for EU countries: never dispose of
power tools in your household waste!
According to European Directive 2012/19/EU
on Waste from Electric and Electronic Equipment
and implementation in national law, used power
tools must be collected separately and recycled in
an environmentally-friendly manner.
Explanatory notes on the specifications on page 3.
Subject to change in accordance with technical
progress.
Ø=max. diameter of the accessory
t
max,1
=max. permitted thickness of the clamping
shank on accessory when using two-hole
nut (12)
t
max,2
=max. permitted thickness of clamping
shank on accessory when using "M-
Quick" clamping nut (1)
t
max,3
=max. permitted thickness of clamping
shank on accessory when using (tool-
free) clamping nut (14)
t
max,4
=roughing disc/cutting disc:
max. permitted thickness of accessory
M=Spindle thread
l=Length of the sanding spindle
n* =No-load speed (maximum speed)
n
*=No-load speed (adjustable)
9. Cleaning
10. Troubleshooting
(equipment-specific)
11. Accessories
12. Repairs
13. Environmental Protection
14. Technical Specifications