Husqvarna DM400 Operator's Manual page 15

Maintenance
Make sure the PRCD functions correctly.
WARNING Not applicable for 110V type
sold in United Kingdom and Ireland. Refer
PRCD on page 7 .
to
Examine the power cord, other cables, and the power
plug for damage.
Make sure the handles and holding surfaces are dry,
clean and free of oil and grease.
Make sure the product is clean.
Examine the shaft seals for damage/water leakage.
Make sure that the nuts and screws are tight.
Make sure that the ON/OFF switch operates correctly.
Replace the gear oil.
Examine the carbon brushes for damage.
To clean the product
CAUTION Make sure that no water goes into
the motor or the gearbox.
CAUTION Do not use running water to clean
the product.
• Use a dry or moist cloth to clean the product.
• Remove blockage from all air openings. A blocked
air intake decreases the performance of the product
and can cause the motor to become too hot.
• Clean and lubricate the spindle shaft thread.
To do maintenance of the diamond drill
bit
• Make sure that the diamond tools segments are
sharp. Sharpen blunt diamond segments with a SiC
grind stone.
• Make sure that there is no vibration in the drill bit. If
there is vibration in the drill bit, the diamond
segments can come loose.
• Make sure that the diamond segments are
sufficiently larger than the inner and outer diameter
of the drill bit tube.
• Lubricate the drill bit thread with water resistant
grease. This makes it easy to loosen the tool.
1188 - 006 - 03.02.2020
Before After
each use each use
X
* *
* *
X X
X
• Make sure that the radial run out at the diamond
segments of the drill bit is not more than 1 mm.
To replace the gear oil
CAUTION If there is gear oil leakage, stop
the product and speak to an approved
service center. The gear becomes damaged
if the gear oil level is not sufficient.
• Let an approved Husqvarna service center replace
the gear oil.
To examine the water connection
CAUTION If there is a leakage of water from
the water connection ring, the shaft seals
must be replaced immediately.
• Let an approved Husqvarna service center repair the
water connection.
After the
Daily each 300
first 100 h
*
X
O
After
h
X
15