680ES OPERATOR MANUAL
43
© 2015 ICS®, Blount International Inc. Specifications are subject to
change without notice. REV071315 F/N 577451
Maintenance
CHAINS & GUIDEBARS
Inspect chain segments and drive links for damage or excessive wear. Chains
with damage or excessive wear should not be used or repaired, they should be
replaced.
NOTE: Guidebars are designed to be used on both sides. If the cut is consistently
leading to one side, turn the guidebar over. It is recommended to turn the guidebar
over with every new chain.
• A table mounted belt or disc sander can be used to square the rails of a worn
guidebar. A badly worn guidebar can quickly damage the chain. If the chain is
touching the bottom of the guidebar groove, replace the guidebar.
• Check the guidebar for straightness.
• Proper chain tension will extend guidebar life.
• Under some circumstances, especially low water pressure, the sprocket nose
can wear out before the guidebar body. Sprocket nose assemblies may be
replaced by an Authorized Service Center.
• Periodically clean the water ports inside the groove of the guidebar using a
small diameter piece of wire or pipe cleaner.
• The guidebar is solely a guide track for the chain. Never use the guidebar to lift,
twist or pry concrete material.
• Prior to storage, spray the chain and guidebar with lightweight oil.
IMPORTANT