Bort 98296198, User Manual

6

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 rec-
ommended 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 obstruct-

ed.

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.

If the chain lubrication system is still not working after 
carrying out the above checks and associated meas-
ures you should contact your service agent.

Chain drive sprocket

The clutch drum is 

fi

 tted with a Spur sprocket (the chain 

sprocket is welded on the drum).
Regularly check the degree of wear on the drive 
sprocket.
Replace if wear is excessive. Replace the drive sprock-
et whenever you replace the chain.
Checking wear on cutting equipment

Check the chain daily for:

●

  Visible cracks in rivets and links.

●

  Whether the chain is stiff.

●

  Whether rivets and links are badly worn.

Replace the saw chain if it exhibits any of the points 
above.
We recommend you compare the existing chain with 
a new chain to decide how badly the existing chain is 
worn.
When the length of the cutting teeth has worn down to 
only 4 mm the chain must be replaced.

Bar

Check regularly:

●

  Whether there are burrs on the edges of the bar. 

Remove these with a 

fi

 le if necessary.

●

  Whether the groove in the bar has become badly 

worn.

Replace the bar if necessary.

ADJUSTMENT OF DEPTH GAUGE SETTING

●

  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 

fl

 at 

fi

 le 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 

fl

 at 

fi

 le  to 

fi

 le 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 

fi

 le along the 

depth gauge tool.

TENSIONING THE CHAIN

WARNING! A slack chain may jump off and 
cause serious or even fatal injury.

WARNING! Always wear approved protective 
gloves. Even a non-moving chain can cause 
serious cuts to yourself or persons you bump 

into with an exposed chain.
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.

LUBRICATING CUTTING EQUIPMENT

WARNING! Poor lubrication of cutting equip-
ment may cause the chain to snap, which 
could lead to serious, even fatal injuries.

Chain oil

Chain oil must demonstrate good adhesion to the chain 
and also maintain its 

fl

 ow characteristics regardless of 

whether it is warm summer or cold winter weather.

Filling with chain oil

●

  All our chain saws have an automatic chain lubri-

cation system. On some models the oil 

fl

 ow is also 

adjustable.

●

  The saw chain oil tank and the fuel tank are de-

signed so that the fuel runs out before the saw chain 
oil.