Makita GA039G Instruction Manual page 12

12. 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 3 . 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.
14. 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.
15. 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 .
16. 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.
1. Maintain a firm grip with both hands on the
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.
Do not position your body in the area w here
3 .
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 .
Use special care w hen w orking corners, sharp
4.
edges, etc. Avoid bouncing and snagging the
accessory. C o r n e r s , s h a r p e d g e s o r b o u n c i n g
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:
Use only wheel types that are specified
1.
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
po w er tool and positioned for maximum safety,
so the least amount of w heel is exposed
to w 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
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 .
5. Always use undamaged wheel anges that are
of correct size and shape for your selected
w heel. Proper wheel flanges support the wheel
thus reducing the possibility of wheel breakage.
Flanges for cut-o wheels may be di erent from
grinding wheel flanges.
6. Do not use w orn do w n w heels from larger
po w er tools. A w h e e l i n t e n d e d f o r l a r g e r p o w e r
t o o l i s n o t s u i t a b l e f o r t h e h i g h e r s p e e d o f a
smaller tool and may burst.
7 . When using dual purpose w heels al w ays use
the correct guard for the application being
performed. Failure to use the correct guard may
n o t p r o v i d e t h e d e s i r e d l e v e l o f g u a r d i n g , w h i c h
could lead to serious injury.
Additional safety warnings specific for cutting-o
operations:
Do not jam the cut-o wheel or apply exces-
1.
sive pressure. Do not attempt to make an
excessive depth of cut. O v e r s t r e s s i n g t h e w h e e l
increases the loading and susceptibility to twisting
o r b i n d i n g o f t h e w h e e l i n t h e c u t a n d t h e p o s s i b i l -
ity of kickback or wheel breakage.
2. Do not position your body in line w ith and
behind the rotating w heel. W h e n t h e w h e e l , a t
the point of operation, is moving away from your
body, the possible kickback may propel the spin-
ning wheel and the power tool directly at you.
3 . When the w heel is binding or w hen interrupt-
ing a cut for any reason, switch o the power
tool and hold it motionless until the w heel
comes to a complete stop. Never attempt to
remove the cut-o wheel from the cut while
the w heel is in motion other w ise kickback may
occur. I n v e s t i g a t e a n d t a k e c o r r e c t i v e a c t i o n t o
e l i m i n a t e t h e c a u s e o f w h e e l b i n d i n g .
4. Do not restart the cutting operation in the
w orkpiece. Let the w heel reach full speed and
carefully re-enter the cut. The wheel may bind,
w a l k u p o r k i c k b a c k i f t h e p o w e r t o o l i s r e s t a r t e d i n
t h e w o r k p i e c e .
5. Support panels or any oversized w orkpiece to
minimize the risk of w heel pinching and kick-
back. L a r g e w o r k p i e c e s t e n d t o s a g u n d e r t h e i r
o w n w e i g h t . S u p p o r t s m u s t b e p l a c e d u n d e r t h e
w o r k p i e c e n e a r t h e l i n e o f c u t a n d n e a r t h e e d g e
o f t h e w o r k p i e c e o n b o t h s i d e s o f t h e w h e e l .
12 ENGLISH
b r o k e n w h e e l f r a g m e n t s , a c c i -