Monthly Maintenance; Weekly Maintenance - Husqvarna 120 Mark II Operator's Manual

• Make sure that the guide bar and saw chain get
sufficient oil.
• Examine the saw chain:
• for cracks in the rivets and links.
• for abnormally worn rivets and links.
• for correct tension.
If necessary, replace the saw chain.
• Sharpen the saw chain. See
chain on page 19 .
• Examine the drive sprocket for excessive wear
and replace if necessary.
• Clean the air intake of the starter unit.
• Make sure that the nuts and screws are tight.
• Make sure that the stop switch works correctly.
• Examine the engine, tank and fuel lines for fuel
leaks.
• Make sure that the saw chain does not rotate
when the engine is idling.

Weekly maintenance

• Make sure that the cooling system works
correctly.
• Make sure that the starter, starter cord and return
spring work correctly.
• Make sure that the vibration damping elements
are not damaged.
654 - 002 - 12.04.2018
To sharpen the saw
• File off any burrs from the edges of the guide
bar.
• Clean or replace the spark arrestor screen on the
muffler.
A
• Clean the external surfaces of the carburetor and
its adjacent areas.
• Clean the air filter. Install a new air filter if it is
damaged or too dirty to be fully cleaned. See
clean the air filter on page 18 for more
information.

Monthly maintenance

• Examine the brake band on the chain brake for
wear. Replace when the brake band thickness is
less than 0.6 mm (0.024 in) at the most worn
point.
To
17