Troubleshooting - Hilti WSJ 750-ET Original Operating Instructions

Storage
▶ Always store this product with the electric supply cable unplugged from the electricity supply.
▶ Store this product in a dry place, where it cannot be accessed by children or unauthorized persons.
▶ After a long period of storage, always check all visible parts and controls for signs of damage and make
sure that they all function correctly.
11

Troubleshooting

If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by
yourself, please contact Hilti Service.
Trouble or fault
The saw blade drops out.
The saw blade cannot be
inserted.
The product can't be
switched on.
WSJ 750-ET
WSJ 850-ET
Switch cannot be locked.
The orbital action cannot be
adjusted.
The orbital action doesn't
work.
Speed cannot be adjusted.
Speed too high or too low.
Dust extraction with the dust
extractor or WSJ-DRS is not
working.
Base plate cannot be
swiveled.
WSJ 850-EB
WSJ 850-ET
Accessory cannot be
installed.
*377835*
Possible cause
The saw blade is not correctly en-
gaged.
The clamping system is clogged
with foreign matter.
The clamping system is clogged
with foreign matter.
Supply cord not connected to elec-
tricity supply.
Switch faulty or dirty.
Switch faulty or dirty.
Groove dirty.
Orbital-action fork dirty.
Orbital-action adjusting lever in the
"0" position.
Thumbwheel faulty or dirty.
Wrong value set.
Extractor hood not correctly con-
nected.
Channels in the product and/or
suction adapter dirty.
Securing screw not slackened.
Connection to the product dirty.
Connection to the base plate is
dirty.
Wrong accessory.
377835
Action to be taken
▶ Repeat the insertion procedure;
make sure that the blade holder
is fully open and that the saw
blade is pushed all the way in
against the resistance of the
spring.
▶ Clean out the blade holder.
▶ Clean out the blade holder.
▶ Check the connection.
▶ Wipe the outside of the switch
with a cleaning cloth.
▶ Wipe the outside of the switch
with a cleaning cloth.
▶ Clean out the orbital-action
adjusting lever groove.
▶ Check for foreign matter in the
area of the orbital-action fork
and clean it out.
▶ Adjust it to the desired setting.
▶ Clean the outside of the
thumbwheel.
▶ Check the set value (scale on
the thumbwheel) and change
the setting accordingly.
▶ Make sure that the vacuum
cleaner is working and that the
dust removal adapter and the
extractor hood are correctly
connected.
▶ Clean the connection and check
that the accessory is suitable.
▶ Check the screw; slacken it if
necessary.
▶ Clean the area between the
base plate and the product.
▶ Clean the connection.
▶ Check that the accessory is
suitable.
English 11