Echo CS-550P Instruction Manual - page 24

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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.

NOTE

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.