Husqvarna 353 E-tech 用户手册

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页码 44
GENERAL SAFETY PRECAUTIONS
English
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 15
Loosen the bar nuts that hold the clutch cover/chain 
brake. Use the combination spanner. Then tighten the 
bar nuts by hand as tight as you can.
Raise the tip of the bar and stretch the chain by 
tightening the chain tensioning screw using the 
combination spanner. Tighten the chain until it does 
not sag from the underside of the bar.
Use the combination spanner to tighten the bar nuts 
while lifting the tip of the bar at the same time. Check 
that you can pull the chain round freely by hand and 
that it does not sag from the underside of the bar.
The position of the chain tensioning screw on our chain 
saws varies from model to model. See instructions under 
the heading What is what? to find out where it is on your 
model.
Lubricating cutting equipment
Chain oil
Chain oil must demonstrate good adhesion to the chain 
and also maintain its flow characteristics regardless of 
whether it is warm summer or cold winter weather.
As a chain saw manufacturer we have developed an 
optimal chain oil which has a vegetable oil base. We 
recommend the use of our own oil for both maximum 
chain life and to minimise environmental damage. If our 
own chain oil is not available, standard chain oil is 
recommended.
Never use waste oil!  Using waste oil can be dangerous 
to you and damage the machine and environment.
Filling with chain oil
All our chain saws have an automatic chain lubrication 
system. On some models the oil flow is also 
adjustable.
The saw chain oil tank and the fuel tank are designed 
so that the fuel runs out before the saw chain oil.
However, this safety feature requires that you use the 
right sort of chain oil (if the oil is too thin it will run out 
before the fuel), and that you adjust the carburetor as 
recommended (a lean mixture may mean that the fuel 
lasts longer than the oil) and that you also use the 
recommended cutting equipment (a bar that is too 
long will use more chain oil).
Checking chain lubrication
Check the chain lubrication each time you refuel. See 
instructions under the heading Lubricating the bar tip 
sprocket.
Aim the tip of the bar at a light coloured surface about 
20 cm (8 inches) away. After 1 minute running at 3/4 
throttle you should see a distinct line of oil on the light 
surface.
If the chain lubrication is not working:
Check that the oil channel in the bar is not obstructed. 
Clean if necessary.
Check that the groove in the edge of the bar is clean. 
Clean if necessary.
!
WARNING! Poor lubrication of cutting 
equipment may cause the chain to snap, 
which could lead to serious, even fatal 
injuries.
IMPORTANT! When using vegetable based saw chain 
oil, dismantle and clean the groove in the bar and saw 
chain before long-term storage. Otherwise there is a risk 
of the saw chain oil oxidizing, which will result in the saw 
chain becoming stiff and the bar tip sprocket jamming.