![background image](http://html1.mh-extra.com/html/ics/890-series/890-series_operators-manual_3550594016.webp)
© 2014 ICS, Blount International Inc. Specifications are subject to change without notice. REV021414 F/N 566100
890 SERIES OPERATOR’S MANUAL
16
TROUBLESHOOTING
Further questions?
Call 800.321.1240 or visit our website at: icsbestway.com
PROBLEM
Possible Cause
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.
Hydraulic flow rate and pressure not correct
8 gpm/20 lpm 12 gpm/45 lpm at 2500 psi/172.5 bar
POOR CUTTING SPEED
Diamonds may be glazed over. Make a few cuts in an
abrasive material to expose the diamonds.
PREMATURE CHAIN STRETCH
Not enough water pressure. The minimum water pressure
required is 20 psi (1.5 bar). Insufficient water supply may
result in excessive wear to the Diamond Chain, which can
lead to loss of strength and Diamond Chain breakage.
A worn sprocket can on on new chain drive links causing
excessive driver damage, wear and stretch.
CHAIN TENSIONER BREAKAGE
Side cover nut is not tight enough. Torque to 20 ft-lbs
(27 Nm).
WATER NOT FLOWING
Water hose is kinked or water supply not turned on
Water ports in guidebar plugged with debris
MOTOR TURNS IN REVERSE
Hydraulic lines connected backwards or power pack is set
to reverse. Chain should travel away from the operator on
the top of the bar and return on the bottom of the bar.
DIAMOND CHAIN BREAKAGE
Improper chain tension
Inserting saw into slot narrower than Diamond Chain
segments
A worn sprocket can allow the chain to jump over the
sprocket tooth causing excessive stretch, stress and
possible chain breakage
Not enough feed pressure while cutting. Avoid letting the
saw bounce and chatter.