• 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
To sharpen the saw
chain on page 20
.
• 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.
• File off any burrs from the edges of the guide bar.
• Clean or replace the spark arrestor screen on the
muffler.
• 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
To
clean the air filter on page 20
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.
• Examine the clutch center, clutch drum and clutch
spring for wear.
657 - 006 -
19
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