
© 2017 ICS®, Blount International Inc. REV072517 P/N 566594
890F4 OPERATOR MANUAL
31
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, disc sander, flat file or bar rail dressercan 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
Chain Tensioner
CHAIN TENSIONER
The chain tensioner can become clogged with concrete slurry during cutting.
•
After each use thoroughly flush the chain tensioner with water and apply a
liberal amount of waterproof grease covering the chain tensioner screw.
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