Operation - Makita 3712 Instruction Manual

Soft start feature
Soft-start feature minimizes start-up shock, and makes
the tool start smoothly.
ASSEMBLY
Always be sure that the tool is
CAUTION:
switched off and unplugged before carrying out
any work on the tool.
Installing or removing trimmer bit
Do not tighten the collet nut with-
CAUTION:
out inserting a trimmer bit, or the collet cone will
break.
Use only the wrenches provided
CAUTION:
with the tool.
Insert the trimmer bit all the way into the collet cone and
tighten the collet nut securely with the two wrenches.
To remove the bit, follow the installation procedure in
reverse.
► Fig.5: 1. Loosen 2. Tighten 3. Hold
Installing trimmer shoe (after it has
been removed from the tool)
NOTE: The trimmer shoe is factory installed on the
tool.
Use the bolts, wing nuts, spring washers and flat wash-
ers to install the trimmer shoe as shown in the figure.
► Fig.6: 1. Wing nut 2. Spring washer 3. Base
4. Trimmer shoe 5. Flat washer 6. Bolt

OPERATION

Always hold the tool firmly with
CAUTION:
one hand on housing. Do not touch the metal part.
NOTE: This tool can be used as a conventional trim-
mer when you remove the trimmer shoe.
Set the base on the workpiece to be cut without
1.
the trimmer bit making any contact.
Turn the tool on and wait until the trimmer bit
2.
attains full speed.
Move the tool forward over the workpiece surface,
3.
keeping the base and trimmer shoe flush and advancing
smoothly until the cutting is complete.
► Fig.7: 1. Trimmer shoe 2. Base
When doing edge cutting, the workpiece surface
should be on the left side of the trimmer bit in the feed
direction.
► Fig.8: 1. Workpiece 2. Bit revolving direction
3. View from the top of the tool 4. Feed
direction
When using the trimmer shoe, 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.9: 1. Feed direction 2. Bit revolving direction
3. Workpiece 4. Straight guide
NOTE: Moving the tool forward too fast may cause
a poor quality of cut, or damage to the trimmer 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 sample cut on a piece of scrap
lumber. This will show exactly how the cut will look as
well as enable you to check dimensions.
Templet guide
The templet guide provides a sleeve through which the
trimmer bit passes, allowing use of the trimmer with
templet patterns.
► Fig.10
Remove the base from the tool, and remove the
1.
trimmer shoe from the base.
► Fig.11
Loosen the wing bolts and secure the base hor-
2.
izontally. Loosen the two screws on the base using a
screwdriver.
► Fig.12: 1. Screws 2. Wing bolt 3. Base
4. Screwdriver
Place the templet guide on the base. There are
3.
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.13: 1. Base 2. Convex portions 3. Templet guide
4. Screws
Secure the templet to the workpiece. Place the
4.
tool on the templet and move the tool with the templet
guide sliding along the side of the templet.
► Fig.14: 1. Trimmer bit 2. Base 3. Templet
4. Workpiece 5. Templet guide
NOTE: The workpiece will be cut a slightly different
size from the templet. Allow for the distance (X)
between the trimmer bit and the outside of the templet
guide. The distance (X) can be calculated by using
the following equation:
Distance (X) = (outside diameter of the templet
guide - trimmer bit diameter) / 2
Straight guide
The straight guide is effectively used for straight cuts
when chamfering.
► Fig.15
Attach the guide plate to the straight guide with
1.
the bolt and the wing nut.
► Fig.16: 1. Bolt 2. Guide plate 3. Straight guide
4. Wing nut
9 ENGLISH