Maintenance - Makita 3708 Instruction Manual
Trimmer
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Also See for 3708:
- Instruction manual (64 pages) ,
- Specifications (2 pages) ,
- Instruction manual (29 pages)
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NOTE:
• Moving the tool forward too fast may cause a poor qual-
ity of cut, or damage to the bit or motor. Moving the tool
forward too slowly may burn and mar the cut. The
proper feed rate will depend on the bit size, the kind of
workpiece and depth of cut. Before beginning the cut
on the actual workpiece, it is advisable to make a sam-
ple cut on a piece of scrap lumber. This will show
exactly how the cut will look as well as enable you to
check dimensions.
• When using the trimmer shoe, the straight guide or the
trimmer guide, be sure to keep it on the right side in the
feed direction. This will help to keep it flush with the
side of the workpiece. (Fig. 8)
CAUTION:
• Since excessive cutting may cause overload of the
motor or difficulty in controlling the tool, the depth of cut
should not be more than 3 mm at a pass when cutting
grooves. When you wish to cut grooves more than
3 mm deep, make several passes with progressively
deeper bit settings.
Templet guide
The templet guide provides a sleeve through which the
bit passes, allowing use of the trimmer with templet pat-
terns. (Fig. 9)
Remove the tool base from the tool. Loosen the wing
bolts and secure the tool base horizontally. Loosen the
two screws on the tool base. (Fig. 10)
Place the templet guide on the tool base. There are four
convex portions on the templet guide. Secure two of the
four convex portions using the two screws. Install the tool
base on the tool. (Fig. 11)
Secure the templet to the workpiece. Place the tool on
the templet and move the tool with the templet guide slid-
ing along the side of the templet. (Fig. 12)
NOTE:
• The workpiece will be cut a slightly different size from
the templet. Allow for the distance (X) between the
router bit and the outside of the templet guide. The dis-
tance (X) can be calculated by using the following
equation:
Distance (X) = (outside diameter of the templet guide –
router bit diameter) / 2
Straight guide (optional accessory)
The straight guide is effectively used for straight cuts
when chamfering or grooving. (Fig. 13)
Attach the guide plate to the straight guide with the bolt,
the wave washer, the flat washer and the wing nut.
(Fig. 14)
Loosen the wing nut and secure the tool base horizon-
tally.
Attach the straight guide with the clamp screw (A).
Loosen the wing nut on the straight guide and adjust the
distance between the bit and the straight guide. At the
desired distance, tighten the wing nut securely. (Fig. 15)
When cutting, move the tool with the straight guide flush
with the side of the workpiece.
If the distance (A) between the side of the workpiece and
the cutting position is too wide for the straight guide, or if
the side of the workpiece is not straight, the straight
guide cannot be used. In this case, firmly clamp a
straight board to the workpiece and use it as a guide
against the trimmer base. Feed the tool in the direction of
the arrow. (Fig. 16)
8
Circular work
Circular work may be accomplished if you assemble the
straight guide and guide plate as shown in Fig. 17 or 18.
Min. and max. radius of circles to be cut (distance
between the center of circle and the center of bit) are as
follows:
Min.: 70 mm
Max.: 221 mm
Fig. 17 for cutting circles between 70 mm and 121 mm in
radius.
Fig. 18 for cutting circles between 121 mm and 221 mm
in radius.
NOTE:
• Circles between 172 mm and 186 mm in radius cannot
be cut using this guide.
Align the center hole in the straight guide with the center
of the circle to be cut. Drive a nail less than 6 mm in
diameter into the center hole to secure the straight guide.
Pivot the tool around the nail in clockwise direction.
(Fig. 19)
Trimmer guide
Trimming, curved cuts in veneers for furniture and the like
can be done easily with the trimmer guide. The guide
roller rides the curve and assures a fine cut. (Fig. 20)
Loosen the wing bolts and secure the tool base horizon-
tally.
Install the trimmer guide on the tool base with the clamp
screw (A). Loosen the clamp screw (B) and adjust the
distance between the bit and the trimmer guide by turn-
ing the adjusting screw (1 mm per turn). At the desired
distance, tighten the clamp screw (B) to secure the trim-
mer guide in place. (Fig. 21)
When cutting, move the tool with the guide roller riding
the side of the workpiece. (Fig. 22)
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection or
maintenance.
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may result.
Replacing carbon brushes
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. (Fig. 23)
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. (Fig. 24)
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.
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