Stihl MS 290 Instruction Manual page 53

English
Definition of Replacement Saw Chain
Types according to CSA-Standard
Z 62.3-04
Type A
Reduced-kickback saw chain which
does not exceed the computed kickback
angle (CKA) of 60° when tested on
representative chain saws that
accommodate that chain without
activated chain brake
Type C
Low-kickback saw chain which does not
exceed the computed kickback angle
(CKA) of 45° when tested on
representative chain saws that
accommodate that chain without
activated chain brake
MS 290, MS 310, MS 390 51