Makita GA4590 Instruction Manual page 11

6 . The outside diameter and the thickness of your
accessory must be w ithin the capacity rating
of your po w er tool. Incorrectly sized accessories
cannot be adequately guarded or controlled.
7. The dimensions of the accessory mounting must
fit the dimensions of the mounting hardware of the
po w er tool. A c c e s s o r i e s t h a t d o n o t m a t c h t h e m o u n t -
i n g h a r d w a r e o f t h e p o w e r t o o l w i l l r u n o u t o f b a l a n c e ,
vibrate excessively and may cause loss of control.
Do not use a damaged accessory. Before each use
8.
inspect the accessory such as abrasive w heels for
chips and cracks, backing pad for cracks, tear or
excess w ear, w ire brush for loose or cracked w ires.
If po w er tool or accessory is dropped, inspect for
damage or install an undamaged accessory. After
inspecting and installing an accessory, position
yourself and bystanders a w ay from the plane of the
rotating accessory and run the po w er tool at maxi-
mum no-load speed for one minute. D a m a g e d a c c e s -
sories will normally break apart during this test time.
9. Wear personal protective equipment.
Depending on application, use face shield,
safety goggles or safety glasses. As appro-
priate, w ear dust mask, hearing protectors,
gloves and w orkshop apron capable of stop-
ping small abrasive or w orkpiece fragments.
The eye protection must be capable of stopping
flying debris generated by various applications.
T h e d u s t m a s k o r r e s p i r a t o r m u s t b e c a p a b l e
of filtrating particles generated by the particular
application. Prolonged exposure to high intensity
noise may cause hearing loss.
10. Keep bystanders a safe distance aw ay from w ork
area. Anyone entering the w ork area must w ear
personal protective equipment. F r a g m e n t s o f
workpiece or of a broken accessory may fly away and
cause injury beyond immediate area of operation.
Hold the po w er tool by insulated gripping
11.
surfaces only, w hen performing an operation
w here the cutting accessory may contact hid-
den w iring or its o w n cord. Cutting accessory
contacting a live wire may make exposed metal
p a r t s o f t h e p o w e r t o o l " l i v e " a n d c o u l d g i v e t h e
o p e r a t o r a n e l e c t r i c s h o c k .
12. Position the cord clear of the spinning acces-
sory. If you lose control, the cord may be cut or
snagged and your hand or arm may be pulled into
the spinning accessory.
1 3 . Never lay the po w er tool do w n until the acces-
sory has come to a complete stop. T h e s p i n n i n g
accessory may grab the surface and pull the
power tool out of your control.
1 4 . Do not run the po w er tool w hile carrying it at
your side. A c c i d e n t a l c o n t a c t w i t h t h e s p i n n i n g
accessory could snag your clothing, pulling the
accessory into your body.
15. Regularly clean the po w er tool's air vents. T h e
m o t o r ' s f a n w i l l d r a w t h e d u s t i n s i d e t h e h o u s i n g
a n d e x c e s s i v e a c c u m u l a t i o n o f p o w d e r e d m e t a l
may cause electrical hazards.
1 6 . Do not operate the power tool near ammable
materials. S p a r k s c o u l d i g n i t e t h e s e m a t e r i a l s .
17. Do not use accessories that require liquid
coolants. U s i n g w a t e r o r o t h e r l i q u i d c o o l a n t s
may result in electrocution or shock.
Kickback and related w arnings:
K i c k b a c k i s a s u d d e n r e a c t i o n t o a p i n c h e d o r s n a g g e d
rotating wheel, backing pad, brush or any other acces-
sory. Pinching or snagging causes rapid stalling of the
rotating accessory which in turn causes the uncon-
t r o l l e d p o w e r t o o l t o b e f o r c e d i n t h e d i r e c t i o n o p p o s i t e
of the accessory's rotation at the point of the binding.
F o r e x a m p l e , i f a n a b r a s i v e w h e e l i s s n a g g e d o r
pinched by the workpiece, the edge of the wheel that is
e n t e r i n g i n t o t h e p i n c h p o i n t c a n d i g i n t o t h e s u r f a c e o f
t h e m a t e r i a l c a u s i n g t h e w h e e l t o c l i m b o u t o r k i c k o u t .
The wheel may either jump toward or away from the
o p e r a t o r , d e p e n d i n g o n d i r e c t i o n o f t h e w h e e l ' s m o v e -
ment at the point of pinching. Abrasive wheels may also
b r e a k u n d e r t h e s e c o n d i t i o n s .
K i c k b a c k i s t h e r e s u l t o f p o w e r t o o l m i s u s e a n d / o r
i n c o r r e c t o p e r a t i n g p r o c e d u r e s o r c o n d i t i o n s a n d c a n b e
avoided by taking proper precautions as given below.
Maintain a firm grip with both hands on the
1.
po w er tool and position your body and arms
to allo w you to resist kickback forces. Al w ays
use auxiliary handle, if provided, for maximum
control over kickback or torque reaction during
start-up. T h e o p e r a t o r c a n c o n t r o l t o r q u e r e a c t i o n s
o r k i c k b a c k f o r c e s , i f p r o p e r p r e c a u t i o n s a r e t a k e n .
2. Never place your hand near the rotating acces-
sory. Accessory may kickback over your hand.
3 . Do not position your body in the area w here
po w er tool w ill move if kickback occurs.
K i c k b a c k w i l l p r o p e l t h e t o o l i n d i r e c t i o n o p p o s i t e
t o t h e w h e e l ' s m o v e m e n t a t t h e p o i n t o f s n a g g i n g .
4 . Use special care w hen w orking corners, sharp
edges, etc. Avoid bouncing and snagging the
accessory. Corners, sharp edges or bouncing
have a tendency to snag the rotating accessory
a n d c a u s e l o s s o f c o n t r o l o r k i c k b a c k .
5. Do not attach a sa w chain w oodcarving blade,
segmented diamond w heel w ith a peripheral
gap greater than 10 mm or toothed sa w blade.
S u c h b l a d e s c r e a t e f r e q u e n t k i c k b a c k a n d l o s s o f
c o n t r o l .
Safety warnings specific for grinding and cut-
ting-o operations:
1. Use only wheel types that are specified
for your power tool and the specific guard
designed for the selected w heel. W h e e l s f o r
w h i c h t h e p o w e r t o o l w a s n o t d e s i g n e d c a n n o t b e
adequately guarded and are unsafe.
2. The grinding surface of centre depressed
w heels must be mounted belo w the plane of
the guard lip. An improperly mounted wheel that
projects through the plane of the guard lip cannot
be adequately protected.
3 . The guard must be securely attached to the
pow er tool and positioned for maximum safety,
so the least amount of w heel is exposed tow ards
the operator. T h e g u a r d h e l p s t o p r o t e c t t h e o p e r a -
t o r f r o m b r o k e n w h e e l f r a g m e n t s , a c c i d e n t a l c o n t a c t
w i t h w h e e l a n d s p a r k s t h a t c o u l d i g n i t e c l o t h i n g .
4 . Wheels must be used only for specified appli-
cations. For example: do not grind w ith the
side of cut-o wheel. Abrasive cut-o wheels
a r e i n t e n d e d f o r p e r i p h e r a l g r i n d i n g , s i d e f o r c e s
applied to these wheels may cause them to
s h a t t e r .
11 ENGLISH