Maintenance - Makita 7104L Instruction Manual

Cut the first hole with the lever (B)
•
pushed away from you. Then pull the
lever (B) toward you and cut again to
enlarge the hole.
NOTE:
The gauge plate is factory adjusted for cutting a
•
hole 30 mm wide.
2. Longitudinal (length) enlargement
Hole length can be determined in three steps shown in
the table below.
Cutter chain position
Original position
No.1 set position
No.2 set position
006562
NOTE:
A hole a little longer than predetermined may be
•
cut depending upon the cutter chain tension.
The adjusting hex bolts are factory adjusted for
•
cutting holes 90 mm long in the No.1 set position
and 120 mm long in the No.2 set position.
Push down the right-hand grip while raising the left-
hand grip. Make sure that the adjusting hex bolt slips
into place securely.
Fig.11
Loosen the hex nut securing the adjusting hex bolt. Turn
the adjusting hex bolt until the cutter chain reaches the
desired position, then tighten the hex nut.
Fig.12
WARNING:
When using pressure to turn the adjusting hex bolt
•
or hex nut, be careful not to allow the adjusting
hex bolt to slip off the set position.
To bring the cutter chain back to the perpendicular (original)
position, pull the lever (C) toward you while pressing down
on the right-hand grip and slightly raising the left-hand grip
and move the cutter chain back to its original position.
When cutting a hole, first use the perpendicular position,
then No.1 set position and finally No.2 set position.
Always safely hook the tool head back onto the hook
when changing the cutter chain position.
Fig.13
When enlarging a
longitudinally, cut the holes in the order indicated from
No.(1) to (6) as shown. This makes for more easy and
efficient hole enlargement.
Fig.14
WARNING:
Never attempt to enlarge a hole with the cutter
•
chain still within the hole. This will cause
unstable and dangerous operation.
Never angle the cutter chain when cutting the first
•
hole, or a dangerous kickback may result. Always
have the cutter chain set to the perpendicular
Hole length to be cut
52.5 mm
52.5 mm - 105 mm
77.5 mm - 130 mm
hole both transversely
position when cutting the first hole.
Lap joints up to 130 mm can be cut with this tool.
Fig.15
NOTE:
Lap joints can be cut only on the front (side away
•
from you) of the workpiece.

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
Fig.16
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.
Fig.17
Lubrication
After use, remove dirt, chips and foreign matter
adhering to the tool. Then oil the moving parts
(especially cutter chain) and the contact portions.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed by Makita Authorized Service Centers,
always using Makita replacement parts.
ACCESSORIES
CAUTION:
These
•
recommended for use with your Makita tool
specified in this manual. The use of any other
accessories or attachments might present a risk of
and
injury to
attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
Cutter chain
•
Chain bar for 30 mm
•
Sprocket 4 for 30 mm
•
Oil supply (100 cc)
•
7
accessories or attachments
persons. Only use
are
accessory or