Poulan Pro Owners Manual, 2010 - 1 
From inside (document excerpt):
PARTS LIST NO. 574305401 DATE Replaces R R R PARTS LIST PARAMOUNT PARTS LIST POULANR POULAN PRO PARTS LIST Note: Illustration may differ from actual model due to design changes MODEL(s) ES400 PAGE NO. 2/19/10 574305401 – 8/20/09 1 1 2 WARNING All repairs, adjustments and maintenance not described in the Operator’s Manual must be performed by qualified service personnel. 3 5 4 6 Ref.
Part No. 530403211 530053073 530015805 530053076 574266601 54 55 56 38 37 36 34 Description Ref. Part No. Description Motor Cover 33. 530016064 Screw Switch-Chain Brake 34. 545157401 Pin Screw 35. 530150000 Assy-Adjust Screw Band-Brake 36. 574252401 Cover-Clutch Assy-Housing (Incl.1,2,3,4,6,8,14 37. 545040604 Assy-Knob 17,18,19,20,21,22) 38. 574252601 Assy-Clutch Cover 6. 530015814 Screw (Incl. 31,32,33,34,35,36,37) 7. 530402879 Switch-Momentary 39. 530015940 Screw 8. 530403322 Assy-Harness (Incl. # 7) 40. 530029850 Catcher – Chain 9. 530053179 Lockout Button 41. 530042090 Ring-Retainer 10. 530053181 Trigger 42. 530053053 Sprocket (3/8 Pitch) 11. 530042091 Spring-Trigger 43. 530016262 Washer-Sprocket 12. 530053052 Pinion 44. 530015775 Screw 13. 530042090 Ring-Retainer 45. 530015814 Screw 14. 530015932 Screw 46. 530403217 Cover Access 15. 530016278 Washer-Thrust 47. 530053072 Oil Cap 16. 530053048 Gear Drive 48. 530019143 O-Ring- (oil cap) 17. 530403233 Assy-Front /Rear Link 49. 530026119 Check Valve (Duckbill) 18. 530016266 Screw-Brake Pivot 50. 530053248 Oil Tank Ass’y. (Incls. 47,48, 49,51,52,53) 19. 530015911 Screw 51. 530047663 Oil Pickup Ass’y. 20. 530403479 Spring-Chain Brake 52. 530053270 Oil Pickup Fitting 21.