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ICS Guide Bar
Part Number 517689
Guide Bars P/N 517689 Concrete Chainsaws
10" Guide Bar (P/N 517689): $119.95
This guide bar is referred to as a 10 Inch guide bar because it will provide a
10 inch cutting depth when used with these ICS Concrete Chainsaws:
Guide Bar 517689 fits on 660GC Concrete Chainsaws
660GC Saws
Guide Bar 517689 fits on 603GC Concrete Chainsaws
603GC Saws
Guide Bar 517689 fits on Redzaw RZ60 Concrete Chainsaws
RZ60 Saws
Guide Bar P/N 517689 - Referred to as a "10 Inch Guide Bar"Guide Bar 517689
Overall Length:
14.8 Inches (37.6cm)
Combo Packs - for Guide Bar 517689 COMBO PACKS
Buy any TWO 10" TwinMAX Chains
and get THIS $119.95 Guide Bar FREE
Includes 2 Chains and This Bar FREE

This ICS video shows proper chain tensioning.

Why is the overall length of my guidebar different
from the descriptive length of my guide bar?
Overall Length
A guide bar that is called a 10" bar on one saw may have a different overall length from a guide bar on a different saw. This is because the drive sprocket on different powerheads are positioned at different distances from front of the saws.
Descriptive (Called) Length
ICS Describes their guide bars by how deep the saw is able to cut into a concrete wall. A 10" guide bar cuts 10" into a concrete wall. The saw is able to cut 10" because the bar extends 10" out from the saw powerhead. That is why these two lengths are different.
It is best to use the overall length when your not sure of which guide bar to buy. The overall length will always remain a constant.
However, as your chain stretches during normal use, you'll use the chain tensioner to extend the guide bar, and it is therefore a less reliable measurement.