Husqvarna 353 EPA I 用户手册
English
– 11
SAFETY INSTRUCTIONS
Some terms that describe the bar and chain
When the cutting equipment supplied with your saw becomes
worn or damaged you must replace it with one of the bars and
chains recommended by us. See the Technical data section.
worn or damaged you must replace it with one of the bars and
chains recommended by us. See the Technical data section.
Bar
•
Length (inches/cm)
•
Number of teeth on bar tip sprocket (T). Small number =
small tip radius = low risk of kickback.
small tip radius = low risk of kickback.
•
Chain pitch (inches). The spacing between the drive links
of the chain must match the spacing of the teeth on the bar
tip sprocket and drive sprocket.
of the chain must match the spacing of the teeth on the bar
tip sprocket and drive sprocket.
•
Number of drive links. The number of drive links is
determined by the length of the bar, the chain pitch and
the number of teeth on the bar tip sprocket.
determined by the length of the bar, the chain pitch and
the number of teeth on the bar tip sprocket.
•
Bar groove width (inches/mm). The groove in the bar must
match the width of the chain drive links.
match the width of the chain drive links.
•
Chain oil hole and hole for chain tensioner. The bar must
be matched to the chain saw design.
be matched to the chain saw design.
Chain
•
Chain pitch (inches)
•
Drive link width (mm/inches)
•
Number of drive links.
•
Level of kickback reduction. The level of kickback
reduction offered by a chain is only indicated by its model
number. See the Technical data section to find the model
numbers of chains that are recommended for use with
your model of chain saw.
reduction offered by a chain is only indicated by its model
number. See the Technical data section to find the model
numbers of chains that are recommended for use with
your model of chain saw.
Sharpening your chain and adjusting raker
clearance
clearance
General information on sharpening cutting teeth
•
Never use a blunt chain. When the chain is blunt you have
to exert more pressure to force the bar through the wood
and the cuttings will be very small. If the chain is very blunt
it will not produce any cuttings at all. Wood powder would
be the only result.
to exert more pressure to force the bar through the wood
and the cuttings will be very small. If the chain is very blunt
it will not produce any cuttings at all. Wood powder would
be the only result.
•
A sharp chain eats its way through the wood and produces
long, thick cuttings.
long, thick cuttings.
•
The cutting part of the chain is called the cutting link and
this consists of a cutting tooth (A) and the raker lip (B). The
cutting depth is determined by the difference in height
between the two.
this consists of a cutting tooth (A) and the raker lip (B). The
cutting depth is determined by the difference in height
between the two.
When you sharpen a cutting tooth there are five important
factors to remember.
factors to remember.
1
Filing angle
2
Cutting angle
3
File position
!
WARNING! The risk of kickback is increased
with a badly sharpened chain!
with a badly sharpened chain!