Makita BJV140 Manual De Instrucciones página 9

Cutouts
Cutouts can be made with either of two methods A or B.
A) Boring a starting hole: (Fig. 19)
For internal cutouts without a lead-in cut from an
edge, pre-drill a starting hole 12 mm or more in diam-
eter. Insert the blade into this hole to start your cut.
B) Plunge cutting: (Fig. 20)
You need not bore a starting hole or make a lead-in
cut if you carefully do as follows.
1. Tilt the tool up on the front edge of the base, with
the blade point positioned just above the work-
piece surface.
2. Apply pressure to the tool so that the front edge of
the base will not move when you switch on the tool
and gently lower the back end of the tool slowly.
3. As the blade pierces the workpiece, slowly lower
the base of the tool down onto the workpiece sur-
face.
4. Complete the cut in the normal manner.
Finishing edges (Fig. 21)
To trim edges or make dimensional adjustments, run the
blade lightly along the cut edges.
Metal cutting
Always use a suitable coolant (cutting oil) when cutting
metal. Failure to do so will cause significant blade wear.
The underside of the workpiece can be greased instead
of using a coolant.
Rip fence set (optional accessory)
CAUTION:
• Always be sure that the tool is switched off and the bat-
tery cartridge is removed before installing or removing
accessories.
1. Straight cuts (Fig. 22 & 23)
When repeatedly cutting widths of 160 mm or less,
use of the rip fence will assure fast, clean, straight
cuts. To install, insert the rip fence into the rectangular
hole on the side of the tool base with the fence guide
facing down. Slide the rip fence to the desired cutting
width position, then tighten the bolt to secure it.
2. Circular cuts (Fig. 24 & 25)
When cutting circles or arcs of 170 mm or less in
radius, install the rip fence as follows.
Insert the rip fence into the rectangular hole on the
side of the base with the fence guide facing up. Insert
the circular guide pin through either of the two holes
on the fence guide. Screw the threaded knob onto the
pin to secure the pin.
Now slide the rip fence to the desired cutting radius,
and tighten the bolt to secure it in place. Then move
the base all the way forward.
NOTE:
• Always use blades No. B-17, B-18, B-26 or B-27
when cutting circles or arcs.
Guide rail adapter set (accessory) (Fig. 26)
When cutting parallel and uniform width or cutting
straight, the use of the guide rail and the guide rail
adapter will assure the production of fast and clean cuts.
To install the guide rail adapter, insert the rule bar into the
square hole of the base as far as it goes. Secure the bolt
with the hex wrench securely. (Fig. 27)
Install the guide rail adapter on the rail of the guide rail.
Insert the rule bar into the square hole of the guide rail
adapter. Put the base to the side of the guide rail, and
secure the bolt securely. (Fig. 28)
CAUTION:
• Always use blades No. B-8, B-13, B-16, B-17 or 58
when using the guide rail and the guide rail adapter.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and the bat-
tery cartridge is removed before attempting to perform
inspection or maintenance.
Replacing carbon brushes (Fig. 29 & 30)
Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same
time. Use only identical carbon brushes.
Use a screwdriver to remove the brush holder caps. Take
out the worn carbon brushes, insert the new ones and
secure the brush holder caps.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be per-
formed by Makita Authorized Service Centers, always
using Makita replacement parts.
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.
• Jig saw blades
• Hex wrench 4
• Rip fence (guide rule) set
• Guide rail adapter set
• Guide rail set
• Anti-splintering device
• Cover plate
• Dust nozzle
• Various type of Makita genuine batteries and chargers
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