From inside (document excerpt):
PARTS LIST NO. DATE 530165089 Replaces r PARTS LIST Note: Illustration may differ from actual model due to design changes CHAIN SAW MODEL(s) MAC CAT 338 PAGE NO. 6/09/04 530165089 — 05/27/04 1 41 40 38 39 WARNING All repairs, adjustments and maintenance not described in the Operator’s Manual must be 27 26 25 37 36 35 34 performed by qualified service personnel.