Husqvarna K750 사용자 설명서

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페이지 24
10 – 
English
SAFETY INSTRUCTIONS
Move the blade slowly forwards and backwards to achieve 
a small contact area between the blade and the material 
to be cut. This reduces the temperature of the blade and 
ensures effective cutting.
Feed down the machine in line with the blade. Pressure 
from the side can damage the blade and is very 
dangerous.
The guard for the cutting equipment should be adjusted so 
that the rear section is flush with the work piece. Spatter 
and sparks from the material being cut are then collected 
up by the guard and led away from the user.
Sharpening diamond blades
Diamond blades can become dull when the wrong feeding 
pressure is used or when cutting certain materials such as 
heavily reinforced concrete. Working with a blunt diamond 
blade causes overheating, which can result in the diamond 
segments coming loose.
Sharpen the blade by cutting in a soft material such as 
sandstone or brick.
Blade vibration
The blade can become out-of-round and vibrate if an 
excessive feed pressure is used.
A lower feed pressure can stop the vibration. Otherwise 
replace the blade. The blade must be of the recommended 
type for the material to be cut.
How to avoid kickback
What is kickback?
The word kickback is used to describe the sudden reaction 
that causes the power cutter and cutting blade to be thrown 
from an object when the upper quadrant of the blade, known 
as the kickback zone, touches an object.
General rules
Never start to cut with the upper quadrant of the blade as 
shown in the figure, also known as the kickback zone.
Always hold the machine in a firm grip with both hands. 
Hold it so that the thumbs and fingers grip round the 
handles.
Keep a good balance and a firm foothold.
Always cut at maximum speed.
Stand at a comfortable distance from the work piece.
Take care when inserting the blade in an existing cut.
Never cut above shoulder height.
Be alert to movement of the work piece or anything else 
that can occur, which could cause the cut to close and 
pinch the blade.
Pull in
Pull in occurs when the disc’s lower section suddenly stops or 
when the cut closes. (To avoid, see the heading ”Basic rules” 
and ”Jamming/rotation”, here below.)
!
WARNING! Under all circumstances avoid 
grinding using the side of the blade; it will 
almost certainly be damaged, break and can 
cause immense damage. Only use the 
cutting section.
Do not pull the power cutter to one side, this 
can cause the blade to jam or break 
resulting in injury to people.
!
WARNING! Kickback can happen very 
suddenly and violently; kicking the power 
cutter and cutting blade back at the user. If 
this happens when the cutting blade is 
moving it can cause very serious, even fatal 
injuries. It is vital you understand what 
causes kickback and that you can avoid it by 
taking care and using the right working 
technique.