![background image](http://html1.mh-extra.com/html/makita/un490d/un490d_instruction-manual_4100852012.webp)
12
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
replacement parts for repairs.
013912
OPTIONAL ACCESSORIES
CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Makita genuine battery and charger
• Battery converter BCV03
• Blade cover
• End guard
• Shear blade assembly
NOTE:
• Some items in the list may be included in the tool
package as standard accessories. They may differ from
country to country.
Malfunction status
Cause
Action
The tool does not start.
Battery cartridge is not installed.
Install the battery cartridge.
The battery is low.
Recharge the battery.
If recharging is not effective, replace
battery.
The drive system does not work
correctly.
Ask your local authorized service
center for repair.
The tool stops running after a little use.
Rotation is in reverse.
Press the “A” side of the reversing
switch.
The battery is low.
Recharge the battery. If recharging is
not effective, replace battery.
Overheating.
Stop using of tool to allow it to cool
down.
It does not reach maximum RPM.
Battery is installed improperly.
Install the battery cartridge as
described in this manual.
The battery is low.
Recharge the battery.
If recharging is not effective, replace
battery.
The drive system does not work
correctly.
Ask your local authorized service
center for repair.
The cutting blades-tightening nuts are
too tight.
Adjust them properly.
Cutting blades do not move.
Inappropriate angle of cutter unit.
Make sure the angle lock engages
properly.
The cutting blades-tightening nuts are
too tight.
Adjust them properly.
Twigs caught by cutting blades.
Use the reversing switch.
The drive system does not work
correctly.
Ask your local authorized service
center for repair.
The tool vibrates abnormally.
Broken, bent or worn cutting blade.
Replace cutting blades.
Loosened cutting blades-tightening
nuts.
Adjust them properly.
The drive system does not work
correctly.
Ask your local authorized service
center for repair.
The tool does not stop.
The electric system does not work
correctly.
Ask your local authorized service
center for repair.