Operation; Maintenance - Makita BVR450 Instruction Manual

• To insert the battery cartridge, align the tongue on
the battery cartridge with the groove in the housing
and slip it into place. Always insert it all the way
until it locks in place with a little click. If you can see
the red part on the upper side of the button, it is not
locked completely. Insert it fully until the red part
cannot be seen. If not, it may accidentally fall out of
the tool, causing injury to you or someone around
you.
• Do not use force when inserting the battery car-
tridge. If the cartridge does not slide in easily, it is
not being inserted correctly.
Switch action
CAUTION:
• Before inserting the battery cartridge into the tool,
always check to see that the switch lever actuates
properly and returns to the "OFF" position when
released.
To start the tool, simply pull the switch lever. Release the
switch lever to stop.
Switch lever can be pulled from either top or back side of
the tool.

OPERATION

Hold the tool straight when inserting/operating. Use the
tool within the effective vibrations range at equidistant
intervals. The effective air bubble removal range is about
ten times diameter of the vibrating head, or around
250 mm (9-27/32").
Do not use this tool to move concrete within a form. The
mortar will just move away and the coarse aggregate will
remain, causing segregation.
007144
1. Switch lever
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Effective leveling and removal of air bubbles
Removal of the air bubbles is complete after you have
worked the tool throughout each effective range, the con-
crete stops shrinking, and the mortar has risen evenly to
the surface, giving off a light appearance. Gently remove
the operating tool not to leave holes.
NOTE:
• Vibrating too long in a single place causes concrete
segregation.
• When the coarse aggregates segregates when
placing concrete, shovel out the coarse aggregate
and put it where there is plenty of mortar. Then use
the tool on it. Don't leave coarse aggregate in the
segregated condition.
When concreting a slope site, always pour from the bot-
tom at the beginning. This way the weight of the freshly
poured concrete and vibration will lead to effective
removal of air bubbles. Conversely, if the pouring is done
first from above, the mortar will separate and eventually
slide to the bottom.

MAINTENANCE

CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before attempting to
perform inspection or maintenance.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be per-
formed by Makita Authorized or Factory Service Centers,
always using Makita replacement parts.
ACCESSORIES
CAUTION:
• These accessories or attachments are recom-
mended 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 per-
sons. 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.
• Various type of Makita genuine batteries and charg-
ers
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