22CS-450PCHAIN AND GUIDE BAR COMBINATIONThe following combinations are recommended to the model CS-450P.GUIDE BAR(Low-kickback)Replacement guide bars.The following guide bars may be considered tohave equivalent kickback energy.• Sprocket nose guide bars of the same lengthand nose radius, same pitch and having thesame number of teeth.• Hard nose guide bars of the same length andnose radius as a sprocket nose bar.SAW CHAIN(Low-kickback)CAUTIONDo not use replacement saw chain unless ithas been designated as meeting the CSA Z62.3 kickback performance requirements.NOTELOW KICKBACK SAW CHAIN meets thekickback performance requirements of CSA Z62.3 (safety requirements for gasoline-poweredchain saws).Guide Bar Saw chainLength ECHO Part No. Pitch Type Linksmm (in) Double Guard mm (in) (OREGON)406 (16) 16F0LD3366 8.26 (0.325) 20LPX 66457 (18) 18F0LD3372 8.26 (0.325) 20LPX 72508 (20) 20F0LD3378 8.26 (0.325) 20LPX 78