Operation; Maintenance - Makita JR3051T Instruction Manual

Attach the hook by following procedure.
1. Insert the tip of slotted screwdriver into the notch
and remove the the cover by pressing and sliding it.
► Fig.3: 1. Notch 2. Cover
2. Insert the square nuts into the tool as shown in the figure.
3. Secure the hook with the screws.
► Fig.4: 1. Square nut 2. Hook 3. Screw
ASSEMBLY
CAUTION:
Always be sure that the tool is
switched off and unplugged before carrying out
any work on the tool.
Installing or removing the recipro
saw blade
CAUTION:
Always clean out all chips or for-
eign matter adhering to the blade and around the
blade clamp. Failure to do so may cause insufficient
tightening of the blade, resulting in a serious injury.
Before installing the recipro saw blade, always make
sure that the blade clamp lever (part of the blade clamp
sleeve) is in released position
cover. If the blade clamp lever is in fixed position, rotate
the blade clamp lever in the direction of the arrow so
that it can be locked at the released position
► Fig.5: 1. Blade clamp lever 2. Released position
3. Fixed position
Insert the recipro saw blade into the blade clamp as far
as it will go. The blade clamp sleeve rotates and fixes the
recipro saw blade. Make sure that the recipro saw blade
cannot be extracted even though you try to pull it out.
► Fig.6: 1. Recipro saw blade 2. Blade clamp sleeve
CAUTION:
If you do not insert the recipro saw
blade deep enough, the recipro saw blade may be
ejected unexpectedly during operation. This can
be extremely dangerous.
To remove the recipro saw blade, rotate the blade
clamp lever in the direction of the arrow fully. The reci-
pro saw blade is removed and the blade clamp lever is
fixed at the released position
► Fig.7: 1. Recipro saw blade 2. Blade clamp lever
CAUTION:
Keep hands and fingers away from
the lever during the switching operation. Failure
to do so may cause personal injuries.
NOTE: If you remove the recipro saw blade without
rotating the blade clamp lever fully, the lever may not be
locked in the released position
the blade clamp lever fully again, then make sure that
the blade clamp lever locked at the released position
NOTE: If the blade clamp lever is positioned inside
the tool, switch on the tool just a second to let the
blade out. Unplug the tool before installing or remov-
ing the recipro saw blade.
on the insulation
.
.
. In this case, rotate
.

OPERATION

CAUTION:
Always hold the tool firmly with
one hand on insulation cover and the other on the
switch handle.
CAUTION:
Always press the shoe firmly
against the workpiece during operation. If the
shoe is removed or held away from the workpiece
during operation, strong vibration and/or twisting will
be produced, causing the blade to snap dangerously.
CAUTION:
Always wear gloves to protect your
hands from hot flying chips when cutting metal.
CAUTION:
Be sure to always wear suitable
eye protection which conforms with current
national standards.
CAUTION:
Always use a suitable coolant
(cutting oil) when cutting metal. Failure to do so will
cause premature blade wear.
CAUTION:
Do not quirk the blade during cutting.
Press the shoe firmly against the workpiece. Do not
allow the tool to bounce. Bring the recipro saw blade
into light contact with the workpiece. First, make a pilot
groove using a slower speed. Then use a faster speed
to continue cutting.
► Fig.8
NOTICE:
Do not cut the workpiece with the shoe
away from the workpiece or without the shoe.
Doing so increases the reaction force which may
break the recipro saw blade.

MAINTENANCE

CAUTION:
Always be sure that the tool is
switched off and unplugged before attempting to
perform inspection or maintenance.
NOTICE:
Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
To maintain product SAFETY and RELIABILITY,
repairs, any other maintenance or adjustment should
be performed by Makita Authorized or Factory Service
Centers, always using Makita replacement parts.
Replacing carbon brushes
► Fig.9: 1. Limit mark
Check the carbon brushes regularly.
Replace them 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.
1. Use a screwdriver to remove the brush holder
caps.
2.
Take out the worn carbon brushes, insert the new
ones and secure the brush holder caps.
► Fig.10: 1. Brush holder cap
6 ENGLISH