Echo CS-550P Serial C10712001001 - C10712999999 - Manual (Page 24)

22 CS-550P
CHAIN AND GUIDE BAR COMBINATION
The following combinations are recommended for model CS-550P.
GUIDE BAR
(Low-kickback)
Replacement guide bars.
The following guide bars may be considered to
have equivalent kickback energy.
• Sprocket nose guide bars of the same length
and nose radius, same pitch and having the
same number of teeth.
• Hard nose guide bars of the same length and
nose radius as a sprocket nose bar.
SAW CHAIN
(Low-kickback)
CAUTION
Do not use replacement saw chain unless it
has been designated as meeting the ANSI
B175.1 - 2000 kickback performance
requirements, when tested on the
representative sample of chain saws below
3.8 c.i.d. specified in ANSI B175.1 - 2000.
NOTICE
LOW KICKBACK SAW CHAIN meets the
kickback performance requirements of ANSI
B175.1 - 2000 (safety requirements for gasoline-
powered chain saws).
Guide Bar Saw chain
Length mm (in)
Part No.
Pitch mm (in) Part No. Links
Double Guard
406 (16)
16F0LD3366 8.26 (0.325) 20LPX66CQ, 20BPX66CQ 66
16F0LD3859 9.53 (3/8) 72LPX59CQ, 72LGX59CQ 59
457 (18)
18F0LD3372 8.26 (0.325) 20LPX72CQ, 20BPX72CQ 72
18F0LD3864 9.53 (3/8) 72LPX64CQ, 72LGX64CQ 64
508 (20)
20F0LD3378 8.26 (0.325) 20LPX78CQ, 20BPX78CQ 78
20F0PD3870 9.53 (3/8) 72LPX70CQ, 72LGX70CQ 70
* Before using the 9.53 mm (3/8 in.) pitch bar and chain, ask your authorized ECHO dealer to change the
rim sprocket.