Husqvarna 240e 用户手册

12 – English

5451676-63 Rev.1 2008-04-14

File all the teeth to the same length. When the length of the 
cutting teeth is reduced to 0.16 inch (4 mm) the chain is 
worn out and should be replaced. (8)

• When you sharpen the cutting tooth (A) the depth gauge 

setting (C) will decrease. To maintain optimal cutting 
performance the depth gauge (B) has to be filed down 
to achieve the recommended depth gauge setting. See 
instructions under the heading Technical data to find the 
correct depth gauge setting for your particular chain.

• The cutting teeth should be newly sharpened before 

adjusting the depth gauge setting. We recommend that 
you adjust the depth gauge setting every third time you 
sharpen the cutting teeth. NOTE! This recommendation 
assumes that the length of the cutting teeth is not 
reduced excessively.

• You will need a flat file and a depth gauge tool. We 

recommend that you use our depth gauge tool to 
acheive the correct depth gauge setting and bevel for 
the depth gauge.

• Place the depth gauge tool over the chain. Detailed 

information regarding the use of the depth gauge tool, 
will be found on the package for the depth gauge tool. 
Use the flat file to file off the tip of the depth gauge that 
protrudes through the depth gauge tool. The depth 
gauge setting is correct when you no longer feel 
resistance as you draw the file along the depth gauge 
tool.

The more you use a chain the longer it becomes. It is 
therefore important to adjust the chain regularly to take up 
the slack.

Check the chain tension every time you refuel. NOTE! A 
new chain has a running-in period during which you should 
check the tension more frequently.

Tension the chain as tightly as possible, but not so tight that 
you cannot pull it round freely by hand. (9)
• Release the knob by folding it out. (10)
• Turn the knob anti clockwise to loosen the bar cover. 

• Adjust the tension on the chain by turning the wheel 

down (+) for tighter tension and up (-) to loosen the 
tension. Lift tip of guide bar while adjusting tension. (12)

• Tighten the clutch cover by turning the knob clockwise 

while lifting tip of bar. (13)

• Fold the knob back in to lock the tensioning. (14)

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.

• 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).

• 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.

• Check that the bar tip sprocket turns freely and that the 

lubricating hole in the tip sprocket is not blocked. Clean 
and lubricate if necessary.

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.