© 2012 ICS, Blount International Inc. Specications are subject to change without notice. REV020212 F/N 545353
TITLE 680GC OPERATOR’S MANUAL
24
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TROUBLESHOOTING
PROBLEM Possible Cause
SAW WON'T REACH FULL RPM Dirty air filter or pre-filter
SLOW DIAMOND CHAIN SPEED
Chain tension too tight. Diamond chain should always
be able to be pulled around the guidebar by hand. It is
normal for the diamond chain links to hang below the
guidebar.
POOR CUTTING SPEED
Diamonds may be glased over. Make a few cuts in an
abrasive material to expose the diamonds.
CHAIN TENSIONER BREAKAGE
Side cover nuts are not tight enough. Torque to 20 ft-lbs
(27 Nm).
WATER NOT FLOWING
Water hose is kinked, or supply not turned on
Water ports clogged with debris
WON'T START
Ignition switch not turned on
Defective spark plug
Incorrect fuel mixture
DIFFICULT TO START
Possible flooded engine. Turn ignition switch on, push
choke in, hold throttle on full with foot and pull starter
cord in rapid succession until engine starts.
Fouled spark plug. Remove spark plug, clean, and re-
gap to .020 in (.05 mm).
DIAMOND CHAIN BREAKAGE
Improper chain tension
Inserting saw into slot narrower than diamond chain
segments
Not enough feed pressure while cutting. Avoid letting the
saw bounce and chatter.
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