Husqvarna 1151438-95 Operator's Manual page 16

• 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 measures you
should contact your servicing dealer.
Chain drive sprocket
The clutch drum is fitted with one of the following drive
sprockets:
A Spur sprocket (the chain sprocket is welded on the drum)
B Rim sprocket (replaceable)
Regularly check the degree of wear on the drive sprocket.
Replace if wear is excessive. Replace the drive sprocket
whenever you replace the chain.
Needle bearing lubrication
Both versions of sprockets have a needle bearing on the
drive shaft, which has to be greased regularly (once a week).
CAUTION! Use only high quality bearing grease or engine
oil.
See instructions under the heading Maintenance, Needle
bearing lubrication.
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.
16 – English
GENERAL SAFETY PRECAUTIONS
When the length of the cutting teeth has worn down to only
0.16 inch (4 mm) the chain must be replaced.
Bar
Check regularly:
• Whether there are burrs on the edges of the bar. Remove
these with a file if necessary.
• Whether the groove in the bar has become badly worn.
Replace the bar if necessary.
• Whether the tip of the bar is uneven or badly worn. If a
hollow forms on the underside of the bar tip this is due to
running with a slack chain.
• To prolong the life of the bar you should turn it over daily.
WARNING! Most chain saw accidents
!
happen when the chain touches the
operator.
Wear personal protective equipment. See
instructions under the heading Personal
protective equipment.
Do not tackle any job that you feel you are
not adequately trained for. See instructions
under the headings Personal protective
equipment, How to avoid kickback, Cutting
equipment and General working
instructions.
Avoid situations where there is a risk of
kickback. See instructions under the
heading Machine' ' ' ' s safety equipment.
Use the recommended protective
equipment and check its condition. See
instructions under the heading General
working instructions.
Check that all the chain saw safety features
are working. See instructions under the
headings General working instructions and
General safety precautions.