Maintenance; Troubleshooting - Makita DUR187L Instruction Manual

MAINTENANCE

WARNING:
Always be sure that the tool is
switched off and battery cartridge is removed
before attempting to perform inspection or main-
tenance on the tool. Failure to switch off and remove
the battery cartridge may result in serious personal
injury from accidental start-up.
NOTICE:
Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
Replacing the nylon cord
WARNING:
Use nylon cord with diameter
specified in "SPECIFICATIONS" only. Never use
heavier line, metal wire, rope or the like. Use rec-
ommended nylon cord only, otherwise it may cause
damage to the tool and result in serious personal
injury.
WARNING:
Make sure that the cover of the
nylon cutting head is secured to the housing
properly as described below. Failure to properly
secure the cover may cause the nylon cutting head to
fly apart resulting in serious personal injury.
1. Press on the housing latches inward to lift off the
cover, then remove the spool.

TROUBLESHOOTING

Before asking for repairs, conduct your own inspection first. If you find a problem that is not explained in the manual,
do not attempt to dismantle the tool. Instead, ask Makita Authorized Service Centers, always using Makita replace-
ment parts for repairs.
State of abnormality
Motor does not run.
Motor stops running after a little use.
It does not reach maximum RPM.
Cutting tool does not rotate:
stop the machine immediately!
Probable cause (malfunction)
Battery cartridge is not installed.
Battery problem (under voltage)
The drive system does not work
correctly.
Battery's charge level is low.
Overheating.
Battery is installed improperly.
Battery power is dropping.
The drive system does not work
correctly.
Foreign object such as a branch is
jammed between the guard and the
nylon cutting head.
The drive system does not work
correctly.
17 ENGLISH
► Fig.38: 1. Latch 2. Cover
2. Prepare approximately 3 m (9 ft) of new nylon
cord. Fold the new nylon cord with one end become
approximately 80 mm (3-1/8") longer than the other
end. Then hook the new nylon cord into the notch in the
center of the spool.
Wind both ends firmly around the spool in the direction
of the head rotation (left-hand direction indicated by LH
on the side of the spool).
► Fig.39: 1. Spool
3. Wind all but about 100 mm (3 - 15/16") of the
cords, leaving the ends temporarily hooked through a
notch on the side of the spool.
► Fig.40
4. Mount the spool in the housing so that the grooves
and protrusions on the spool match up with those in the
housing. Keep the side with letters on the spool visible
on the top. Now, unhook the ends of the cord from their
temporary position and feed the cords through the
eyelets to come out of the housing.
► Fig.41: 1. Spool 2. Housing 3. Eyelet
5. Align the protrusion on the underside of the cover
with the slots of the eyelets. Then push the cover firmly
onto the housing to secure it.
► Fig.42
To maintain product SAFETY and RELIABILITY,
repairs, any other maintenance or adjustment should
be performed by Makita Authorized or Factory Service
Centers, always using Makita replacement parts.
Remedy
Install the battery cartridge.
Recharge the battery. If recharging is not effective,
replace battery.
Ask your local authorized service center for repair.
Recharge the battery. If recharging is not effective,
replace battery.
Stop using of tool to allow it to cool down.
Install the battery cartridge as described in this
manual.
Recharge the battery. If recharging is not effective,
replace battery.
Ask your local authorized service center for repair.
Remove the foreign object.
Ask your local authorized service center for repair.