© 2017 ICS®, Blount International Inc. REV072517 P/N 566594
890F4 OPERATOR MANUAL
22
E
N
G
LI
S
H
PRE-OPERATION SAFETY CHECKS
Operation
•
Assure proper chain tension: The chain should be easily pulled around
the guidebar by hand.
•
Assure all safety devices are properly mounted and functional and that
all controls are in proper working order.
•
Be sure there are no obstructions (plumbing, electrical conduit, air
ducts, etc.) and no unnecessary people present
•
Always wear protective clothing, including hard hat, eye protection,
hearing protection, non-slip safety boots, gloves. Avoid wearing loose
fitting clothing.
•
Adequate water supply and pressure
Minimum flow: 1 gpm (4 lpm)
Minimum water pressure: 20 psi (1.5 bar)
•
Proper hydraulic supply to the power cutter:
Maximum flow: 8 gpm (30 lpm) or 12 gpm (45 lpm),
depending on power cutter model
Maximum hydraulic pressure: 2,500 psi (172.5 bar)
The single most important factor an operator can control to increase chain
life is to use adequate water pressure. Insufficient water supply may result
in excessive wear to the chain, which can lead to loss of strength and chain
breakage, and/or damage to the guidebar nose sprocket.
IMPORTANT
