From inside (document excerpt):
PARTS LIST NO. DATE 530087572 530087572 3/06/07 Replaces r PARTS LIST Note: Illustration may differ from actual model due to design changes CHAIN SAW MODEL(s) 1950 PAGE NO. 8/02/07 1 WARNING All repairs, adjustments and maintenance not described in the Operator’s Manual must be performed by qualified service personnel.- ONLY -4 54 51 56 Ref.
Part No. 530038227 530016149 530015775 530069216 530023877 530047192 530037809 530047989 530038406 530069822 530015922 530071305 530071259 530037820 530049477 530016064 530019206 530047663 Description Lever-Switch (Includes Pin) Spring-Switch Screw Kit-Fuel Line (Large) Fitting Assy-Fuel Cap Wire-Throttle Lever-Choke Grommet-Choke Knob Kit-Chassis Assy Nut-Speed Kit-Trigger & Lockout Kit-Oil Pump (incl 14,15,17) Gear-Worm Spring Elbow-Oil Pickup Screw Seal Block Assy-Oil-Pickup (Incl. 19, 20 & 21) Ref.. Part No. 530038373 530037821 530030189 530014949 530015611 530047061 530015907 530016133 530039209 530015127 530016134 530015920 530049334 530069232 530037485 530015892 530027531 530037817 530016080 530023817