Walk-Behind Mower

Model # 3901 Official Craftsman lawn mower

Here are the diagrams and repair parts for Official Craftsman 3901 lawn mower, as well as links to manuals and error code tables, if available.

By Schematic
By Part
SELECT DIAGRAM
?

This is the number corresponding to the part on the diagram / schematic

Browse Parts for3901 Lawn Mower

  • Knob 12681-6167-0
    #130

    Recoil starter diagram

    Knob

    Part #12681-6167-0

    Replaced by #31-904

    ?
    Manufacturer substitution
    This part replaces 12681-6167-0. Substitute parts can look different from the original.
    In Stock
  • Seal 12681-5691-0
    #80

    Governor diagram

    Seal

    Part #12681-5691-0

    The manufacturer no longer makes this part, and there's no substitute part

  • A/c Element 12681-1122-0
    #30

    Air cleaner - muffler - carburetor diagram

    A/c element

    Part #12681-1122-0

    The manufacturer no longer makes this part, and there's no substitute part

  • Cam Collar 12682-1628-0
    #190

    Rocker arm - camshaft diagram

    Cam collar

    Part #12682-1628-0

    The manufacturer no longer makes this part, and there's no substitute part

  • Spring 12681-4454-0
    #120

    Carburetor (component parts) diagram

    Spring

    Part #12681-4454-0

    The manufacturer no longer makes this part, and there's no substitute part

  • Holder 65601-3512-0
    #30

    Blade brake clutch diagram

    Holder

    Part #65601-3512-0

    The manufacturer no longer makes this part, and there's no substitute part

  • Jet 12912-4426-2
    #260

    Carburetor (component parts) diagram

    Jet

    Part #12912-4426-2

    The manufacturer no longer makes this part, and there's no substitute part

  • Frame 65601-5115-0
    #20

    Grass catcher bag - label diagram

    Frame

    Part #65601-5115-0

    The manufacturer no longer makes this part, and there's no substitute part

  • Gasket 12681-3312-0
    #20

    Oil filler pipe diagram

    Gasket

    Part #12681-3312-0

    The manufacturer no longer makes this part, and there's no substitute part

  • Carburetor 12681-4401-0
    Carburetor

    Part #12681-4401-0

    The manufacturer no longer makes this part, and there's no substitute part

Effective articles & videos to help repair your walk-behind mowers

The best time of day to mow grass (and when you should absolutely not)

The best time of day to mow grass (and when you should absolutely not)

Wondering when to mow your lawn for the best results? Timing matters more than you might think. Discover the best time o…

Top 10 electric lawn and garden tools

Top 10 electric lawn and garden tools

Learn about the top 10 must-have electric lawn & garden tools for 2023…

How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…